Saturday, March 21, 2020
Thursday, March 5, 2020
Religion, Femininity and Love in Charlotte Brontes Jane Eyre
Religion, Femininity and Love in Charlotte Brontes Jane Eyre Free Online Research Papers I. FRANKNESS AND TRUTH FROM A MAIN CHARACTER ââ¬Å"Miss Eyre is rather a brazen miss,â⬠wrote one reader, referring to the passionate main character of Charlotte Bronteââ¬â¢s most famous novel. Indeed, the novel received unfavorable reviews from its early critics for going against deeply entrenched codes of conduct and femininity. Janeââ¬â¢s outbursts of emotion, her then-radical assertion of the womanââ¬â¢s right to go beyond roles assigned by custom and her rejection of borders imposed by class caused controversy. In fact, Elizabeth Rigby calls Jane ââ¬Å"unchristian,â⬠saying that Jane Eyre couldnââ¬â¢t have been written by a female. She ultimately says that even if the book was penned by a woman, it was penned by one ââ¬Å"who has, for some sufficient reason, long forfeited the society of her own sex.â⬠(Weisser, p. xiv) This nonconformity, however, is what renders the novel an accurate picture of the life and times of its main character. Jane Eyre can be compared to a view through an unclouded lens: the character speaks without regard for the conventions of the day; therefore, we are given an uninhibited view of the character and an honest, unrestrained response to the issues during her time. Moreover, while Jane Eyre is classified as historical fiction today, it fell under the category of contemporary realist fiction during the time of its publication. Its author drew characters and plot elements from her own life, thus it can be treated as a reliable account of England during Bronteââ¬â¢s time, despite its fictionalization. Bronte was wary of theatrical productions of her novel because she feared they would misrepresent her work, and in a way she was right. Most productions selectively emphasized the Gothic and Romantic elements of the novel at the expense of its views on religion and the condition of women (Weisser, p. xii), which are noteworthy as well. Jane Eyreââ¬â¢s passages on women and religion actually need more emphasis, given that much of the controversy surrounding the novel stems from the Bronteââ¬â¢s brand of Christianity and proto-feminism. II. RELIGION, HUMAN FEELINGS AND HUMAN DESIRES Readers are given three pictures of religion in Jane Eyre. First, we are given the brand of religion from Brocklehurst, which Jane deems too hypocritical and consequently rejects. The hypocrisy is painted through the contrasting appearances of Brocklehurstââ¬â¢s family and the students of Lowood. There is a scene where Brocklehurst orders that the curls of a Lowood student be cut. Because Brocklehurst espouses the Evangelical view that Christianity requires the purging of pride, he subjects Lowood students to these kinds of humiliation and deprivation. Note, however, that Brocklehurst practices his evangelism on Lowood students while his own family takes on a gay, luxurious appearance. This hypocrisy justifies the novelââ¬â¢s rejection of the nineteenth century Evangelical movement. Second, Helen Burnsââ¬â¢ brand of religion is one that forgives all wrongs in the name of Christianity. Jane rejects this, because she cannot train herself wholeheartedly for martyrdom like Helenââ¬â¢s, even if she admires Helen for it. The fact that Helen dies very young implies that her passivity is not suited for the trials that a person will face throughout the course of life. Third, we are given the brand of religion of St. John Rivers, which casts the Christian in the role of saviour to the heathens and deliverer of Godââ¬â¢s word to new flocks. Jane rejects this as well, because this type of religion seeks glory (which Jane does not desire) and forces her to curb her feelings and passions. Like Helenââ¬â¢s brand of religion, this forces her to deny her nature. But while Jane rejects all three models of religion, she does not reject God or morality. This is exemplified by Bertha, one of Janeââ¬â¢s foils. Bertha responds to conflict in ways that Jane cannot. For example, Bertha succumbs to her desires and feelings, as evidenced by her promiscuity and alcoholism. Meanwhile, Jane denies her desires and feelings when she refuses to commit adultery by marrying Rochester while his first wife exists, because God forbids adultery. Jane rejects the models of religion from Brocklehurst, Helen and St. John, but eventually she discovers her own brand of Christianity: one that is not oppressive and hypocritical like Brocklehurstââ¬â¢s and not unnatural like Helenââ¬â¢s and St. Johnââ¬â¢s. It obeys God while allowing Jane her earthly pleasures and emotional desires. Bronteââ¬â¢s views on religion were a reflection of how the events of the era filtered into her writing. During the parliamentary debates in 1829 regarding the Catholic question, the English debated on whether or not Catholics should be granted political rights equal to those of Protestants (Center for Research on Social Organization, p.1). These debates imply that there is the question of which religion ââ¬â Protestantism or Roman Catholicism ââ¬â deserve supremacy over England. Bronte may be espousing her own brand of morality in answer to these debates. Since Janeââ¬â¢s religion was not specified, and the reader only has her brand of morality to judge, Bronte could be saying that a person should not be judged according to oneââ¬â¢s label (Catholic or Protestant), but should be judged instead by how one answers the call to be upright. Does the personââ¬â¢s response break laws of the Bible? Does the personââ¬â¢s response strike a balance between moral duty and practicability? Or is the response too hypocritical? The pictures of religion throughout Jane Eyre tackle these questions to a great extent. III. LOVE AND SOCIAL CLASS IN THE VICTORIAN PERIOD Jane Eyre is deeply critical of the social hierarchy in England during the Victorian period. Jane lashes out against class prejudice in certain parts of the novel, the most famous of which is her declaration of love for Rochester: Do you think, because I am poor, obscure, plain and little, I am soulless and heartless? You think wrong! I have as much soul as you and full as much a heart! . I am not talking to you now through the medium of custom, conventionalities nor even of mortal flesh; it is my spirit that addresses your spirit; just as if both had passed through the grave, and we stood equal at Godââ¬â¢s feet, equal ââ¬â as we are! (Bronte, p. 294) Moreover, Jane does not adhere to the value system of the Victorian period. Rochesterââ¬â¢s crowd (Blanche and her peers) are superior to Jane based on the Victorian social hierarchy, which puts a premium on income. In this light, Blanche and Rochester should marry, and Jane should not dream of a union with Rochester. But Jane believes that intellectual equality and kindred spirits ââ¬â and not income or any other arbitrary Victorian standard ââ¬â should be the basis for a union. Thus she says of Blanche and Rochester: ââ¬Å"I would scorn at such a unionâ⬠(Bronte, p. 294). However, the novel ends with Jane not actually being able to defy limits imposed by class. She gets an inheritance. Meanwhile, Rochesterââ¬â¢s wealth is diminished because Thornfield burns to the ground, and he loses an eye and a limb. They do not get married while they are from different classes in society. They both had to move (Jane up the ladder of income, Rochester down the ladder of income and social status) to be able to marry. This may be because Bronteââ¬â¢s ideas were too radical for the time, and to write about a union that defied all the conventions of society may not come off as believable at all. Or Bronte may have changed their positions in society to offer readers the possibility of a marriage with tangible indications of equality. Furthermore, it is acknowledged in the novel that marriage ââ¬â an expected state for a female to go into ââ¬â can be a relationship between equals, despite the fact that women were generally thought of as inferior to men during the Victorian period. As Jane says: ââ¬Å"I am my husbands life as fully as he is mine. . . . To be together is for us is to be at once as free as in solitude, as gay as in company. . . . We are precisely suited in characterâ⬠(Bronte, p. 525); this not only establishes that a woman can marry not only for social mobility; she can marry because she found someone who suits her well. it also reinforces the belief that compatibility in intellect and character ââ¬â and not income or social class ââ¬â should be the basis for a good match. IV. FEMININITY AND FREEDOM Janeââ¬â¢s assertion that a womanââ¬â¢s horizons should be broadened is not to be misinterpreted as a denunciation of the Victorian values of service and domesticity. Note that the novel begins in girlhood and ends with Janeââ¬â¢s marriage and motherhood, following the Victorian trajectory of the femaleââ¬â¢s life based on her purpose (Weisser, p.xxv). Bronte has been cast as a proto-feminist, because she created female protagonists that do not charm men to secure their futures. But she does not push for the womanââ¬â¢s complete autonomy in Jane Eyre. In fact, marriage and domesticity are also presented in the novel as a reward for Janeââ¬â¢s morality. She simply says that women should be allowed to deviate if they wish from the roles and duties imposed by custom. This is evident when Jane says: Women are supposed to be very calm generally; but women feel just as men feel; they need exercise for their faculties, and a field for their efforts, as much as their brothers do; they suffer from too rigid a restraint, too absolute a stagnation, precisely as men would suffer; and it is narrow-minded of their more privileged fellow-creatures to say that they ought to confine themselves to making puddings and knitting stockings, to playing the piano and embroidering bags. (Bronte, p. 123) Freedom in the novel is not limited to the freedom endorsed by feminism today. Jane also seeks the kind of freedom that will fulfil her need for autonomy while still allowing her to fulfil the need to belong. She is presented different forms of freedom throughout the novel. First, Rochester offers her the freedom to liberate her passions when he offers to make her his mistress. She rejects this, because to liberate her passions in such a way would mean enslavement to her feelings. Afterwards, St. John offers her the freedom to exercise her talents to the fullest by becoming a missionary. She rejects this as well, because this would mean enslavement to Grace through the obliteration of Nature, because she could not give rein to her passions. There is also the presence of Diana and Mary: two women who are unmarried and therefore unsubjugated by any male. Jane appreciates the self-sufficiency of Diana and Mary, but she does not conform to their kind of freedom as well, because it cannot give her emotional sustenance. V. CONCLUSION Jane Eyre is the story of a young womanââ¬â¢s quest for emotional and spiritual fulfilment. While it has been called unchristian, unfeminine and the like, it remains a favorite both in and out of the academic reading lists. (Weisser, p.xiii)This endurance of Jane Eyre may be attributed to the same reasons why it has met disapproval: Janeââ¬â¢s intensity of feeling, her attempt to strike a balance between her moral obligations and earthly pleasures, her unabashed declaration that she is equal to Rochester despite their differences in wealth. These propose a middle ground for all the conflicting elements in life: Nature vs. Grace, Passion vs. Reason and Love vs. Autonomy. This middle ground makes Jane a believable and relatable character and allows the novel to retain popular success despite the passage of time and the evolution of tastes. Moreover, the issues tackled in the novel remain relevant to the present time. First, there is still the question of how to practice the Christian faith. At present, Christians are still divided into labels: Catholic, Protestant and many others. The pictures of religion in the novel serve as points for reflection for people exploring their Christianity. Second, the novel discusses womenââ¬â¢s place in society, an issue that has not yet been resolved. Bronte issued her declaration of womenââ¬â¢s rights in 1847, but womenââ¬â¢s rights still have a long way to go in the context of the present, and Janeââ¬â¢s struggles can still effectively mirror the struggles of women at present. This does not include only the broadening of the roles that women are supposed to take on, but also the power play between man and women in love. Jane Eyre may have been written hundreds of years ago, but its endurance is proof of its value. It is fortunate that despite the fact that women and women writers were not taken as seriously as men during the Victorian period, Bronte pursued her dream to write. If not, we would be deprived of a deeply valuable account of life during the Victorian period, and we would be deprived of great insights without the voice of Jane. BIBLIOGRAPHY Bronte, Charlotte. Jane Eyre. New York: Barnes and Noble Classics, 2003. Weisser, Susan Ostrov. Introduction. Jane Eyre. New York: Barnes and Noble Classics, 2003. Center for Research on Social Organization. ââ¬Å"British Catholic Emancipation, Prototype of Reform?â⬠Online. Internet. December 1980. Available URL: http://deepblue.lib.umich.edu/bitstream/2027.42/50994/1/220.pdf Research Papers on Religion, Femininity and Love in Charlotte Bronte's Jane EyreBook Review on The Autobiography of Malcolm XCanaanite Influence on the Early Israelite ReligionHonest Iagos Truth through DeceptionMoral and Ethical Issues in Hiring New EmployeesRelationship between Media Coverage and Social andStandardized TestingMind TravelAssess the importance of Nationalism 1815-1850 EuropeWhere Wild and West Meet19 Century Society: A Deeply Divided Era
Tuesday, February 18, 2020
SABMiller Case Analysis Study Example | Topics and Well Written Essays - 2000 words
SABMiller Analysis - Case Study Example The external environment for SABMiller in 2010 was conflicted by the inability to differentiate certain products in its portfolio of brands, namely the light beer categories, which accounts for 40 percent of total beer sales in the U.S; a significant volume. In Western Europe, well-established premium brands were estimated to be driving consumer demand based on their buying trends. This was a difficulty considering that new executive leadership worked toward reducing the Miller brand portfolio from 50 down to just 10 or 12 products. Divestment of premium brands that occurred during the earlier part of the 2000s seemed to limit the ability of SABMiller to re-establish brand presence for low-performing beer. Clearly, SABMiller is affected by the consumer behaviour preferences driven by trends or consumption patterns and must reengineer processes to meet these changing demands. In 2010, it was also clear that SABMiller is impacted by events in the external market, such as South African AIDS pandemics, confidence in certain currency markets related to the stock market and trading, and other events that limit their short-term potential to gain revenue and/or market share. However, SABMiller understood these limitations and worked to leverage other activities to the best of their ability, especially considering that some external events like the AIDS scenario was completely outside of the control of strategic leadership and focus. Additionally, the external market was driven by joint ventures from some of the major players in the beer industry, thus limiting the ability to consider this a quality strategy that had once served them well, such as with Coors and other brands. Even though these had short-term revenue opportunities and cost reduction improvements, or streamlining operational functions, their long-term value was diminishing. The external market provided opportunities to combine resources with competition, however this strategy has long-term brand problems at the marketing level when similarly-priced products in a joint venture are competing with one another. Thus, finding new opportunities based on the external market characteristics were becoming increasingly difficult to innovate and implement. SABMillerââ¬â¢s competitive advantage SABMillerââ¬â¢s competitive advantage had been the ability to coordinate resources for acquisitions in order to extend their portfolio of brands across Europe, em erging economies and the United States. This drove considerable success from 2001 until 2009, such as the acquisition of Grolsch, Sarmat Brewery in the Ukraine, and multiple brewery purchases in the Chinese market. As indicated by the companyââ¬â¢s cash flow statements, the improvement in total brand portfolios gave it more resources to seek acquisitions as a strategy for long-term growth and opportunity in emerging economies and locally. SABMiller fits the profile of a strategic leader when it comes to seeking opportunity through acquisition and divesting poor performing brands when required through external analysis and business process reengineering.
Monday, February 3, 2020
Caliban in Aim Cesaire's A Tempest Essay Example | Topics and Well Written Essays - 1000 words - 1
Caliban in Aim Cesaire's A Tempest - Essay Example He describes how Prospero, the Duke of Milan, usesà magicà toà graspà absoluteà powerà over Caliban and Ariel. Aime depicts Prosperoââ¬â¢s as a driven and powerfulà masterà as well as colonizer whoà powerà over the islandà territoryà by superiorà forceà andà authority. On the hand, he portrays Caliban as a colonizedà masterà who ignores Prospero and disobeys hisà commandà onà manyà occasions throughout the play (Harrison 25). Calibanââ¬â¢s response and authority to control Prosperoââ¬â¢s and powerful commandsà depictà him as authoritative. For example, Prospero refers to Caliban as an ugly ape (Cesaire 17). Calibanà quicklyà reiterates:à Youà think Iââ¬â¢m uglyâ⬠¦well I do not think you are so handsome yourself. With that large hooked nose,à youà look just likeà sameà old vulture, an old vulture with a scrawny neck! (Cesaire 17). Weà learnà that Caliban isà braveà and courageous. He expresses his feelings towards Prospero and takes control over him. Cesaire depicts Caliban as ââ¬Ëthe king of the Islandââ¬â¢ (Cesaire 17). Caliban views Prospero asà narrow-mindedà and intolerant when he refers to his mother Sycorax is a witch and aà ghostââ¬â¢ (Cesaire 18). He views Prospero asà narrow-mindedà andà intolerant: ââ¬ËAnyhowà youà onlyà thinkà she isà deadà because you think the world itself isà deadâ⬠¦Itââ¬â¢s so much easier that way!ââ¬â¢ (Cesaire 18). After Caliban reminded by Prospero that Sycorax isà dead, he starts to gain more confidence andà powerà to control Prosperoââ¬â¢s ruthlessà command.à When Prospero accuses Caliban of rape; ââ¬ËGood God, you tried to rape my daughterââ¬â¢, Caliban reiterates forcefully: Rape!à Rape! Listenà youà old goat, you are the one who put thoseà dirtyà thoughts in myâ⬠¦I could not care less for your daughter, or about your cave, for that matter (Cesaire 19). Caliban derives hisà magicà from Sycorax toà shapeà and make Prosperoà powerlessà of
Sunday, January 26, 2020
Analysis of Peripherin-2 Cone Mutation V268I
Analysis of Peripherin-2 Cone Mutation V268I Introduction: 1.1 Composition of Retina: Eye an organ which is known for its sensory function Vision, serves as a basis for perception of the world outside. Three layers of tissues enclose the eye, outermost layer sclera, middle layer choroid and inner layer retina. Central macular region of the retina called as fovea consist of photoreceptor cells, where maximum visual acuity is possible due to minimal light scattering. Iris found in region between the cornea and lens acts like an aperture controlling the amount of light that could enter and pass through retina (Siegel and Sapru.2011). Retina consists of following layers: The outer most primary epithelium layer with pigmented melanin cells absorbs uncaptured light preventing reflection back to rest of retina. The later parts of retina layers involved in sensing and processing of light stimulus are the layers with photoreceptor cells- light sensitive region with rod and cone cells, external limiting membrane, outer nuclear layer, outer plexiform layer, inner nuclear layer, inner plexiform layer and inner most layer with ganglion cell axon fibers. Optically as light when imaged onto retinal photoreceptor layer, light passing through this layer with rods and cones converts light stimuli to electric signal through horizontal cells, further processed through bipolar, amacrine before they reach ganglion cells. From the axons of Central Nervous System (CNS) ganglion cells information is passed in the form of action potential to optic disc and optic nerve signal is received by brainââ¬â¢s visual center. (Ayoub, 2008). 1.2 Composition of Photoreceptors: Retina is made up of two different types of photo receptors- Rods and cones, the ratio of these photoreceptors vary in different species depending on its habitat being diurnal or nocturnal, in humanââ¬â¢s rod cells are in majority with cone cells in a ratio of 20:1 (Mustafi et al., 2009). Rods and cones consist of outer segment, inner segment and synaptic terminal. Towards outer surface retina outer segments are located, these segments contain membranous discs arranged in the form of a stack, and these regions are involved in photo transduction by detecting photons and converting them into electrical signals. Inner segment consist of nucleus, both segments are integrated by a stalk containing microtubules. The synaptic terminal carries out synaptic contact with other cells (Siegel and Sapru. 2011). Retinal pigment epithelial cells phagocytize the aged disks which are shed from distal end when new a new disk is added to the base (Young. 1967). Fig: 1 Structure of rod and cone cell. In rods outer segment disc membrane is separated by plasma membrane, disks consist of enclosing lipid bilayer compartment called as disk lumen or intra distal space. Lamellar region of the disk is joined by curved rim region, lamellar region consist of photoreceptor protein, Rhodopsin ââ¬â an integral membrane protein, and curved rim regions consist of filaments extending to cytoplasmic regions of adjoining disks maintaining structure of outer segment. Rim regions also contain membrane proteins Rim-1, a high molecular weight protein and two other lower molecular weight proteins Peripherin/rds and Rom-1. In cones discs are not completely formed, they are adjoined and are continuous with plasma membrane. (Molday. 1994). These two proteins Peripherin/rds and Rom-1 are homologous in structure, peripherin/rds is expressed both in rods and cones while Rom-1 is only found in rods, they can interact to form dimers and tetramers. (Elizabeth. 2005) Cones are known to be responsible for vision during daylight and mediate color vision, while rods do not. Axial structure of cones makes them capture light efficiently during day, with fast responsive membrane potential with less integration time. There are three types of cones L, M, S cones which are specific to a region of visible spectrum to which they are found to be sensitive. L cones are sensitive to ÃÅ Ã
½max~ 553-565, M cones are sensitive to ÃÅ Ã
½max~ 530-537, S cones are sensitive to ÃÅ Ã
½max~ 415-430, frequency of photons. (Mustafi et al., 2009). Rods are specialized to work under dim light conditions, rhodopsin is the most abundant protein found in the rods constituting about 85 % of total protein in rod outer segments. (Elizabeth. 2005). Circuit transmitting information to ganglion cells is different in rods and cones, each rod bipolar cell is connected to many rod cells, and many rod bipolar cells are connected by amacrine cell. More convergence make rods better detector of light but reduces spatial resolution. In cones itââ¬â¢s less convergent as each ganglion cell receives input from only one cone bipolar cell, which is connected to single cone cell (Mustafi et al., 2009). Signal transduction in Photoreceptors: The signaling cascade in photoreceptors involves from light absorption till signal generation by membrane polarization, resulting in controlling the rate of release of neurotransmitter through synaptic terminal. In Dark light condition gyanylate cyclases (GCs) actively produce high Cyclic guanosine monophosphate (cGMP) levels, There by the cGMP sensitive cyclic nucleotide-gated (CNG) channel is in its open state and gives rise to the influx of Na+ and Ca+2. Rods and cones are depolarized to ~35 to 45 mV, where outer segment membrane channels are open permeable to Na+ by effluxing k+ balancing cations. This constitutes a circuit known as ââ¬Å"Dark or circulating currentâ⬠. In this condition with the channel opened for influx of ca+2 initiates the release of neurotransmitter from synaptic terminal. In light conditions cation channel in outer membrane is closed, thereby membrane hyperpolarizes towards equilibrium potential for k+, causing halt in neurotransmitter release (Jindrova. 1998). When photon is absorbed by Rhodopsin- a 40 kDa protein belonging to G protein coupled receptors, consist of a protein opsin, a single polypeptide with seven transmembrane helical segments forming three cytoplasmic loops and a chromophore 11-cis retinal, which binds to lysine, 296 residue on opsinââ¬â¢s seventh helix. In rods and cones photon absorption leads to isomerization of 11-cis retinal form to all trans retinal confirmation and in the surrounding opsin repositioning of cytoplasmic loops occur which in turn activates the protein to Metarhodopsin II (R*) state, which stimulates the heterotrimeric G protein transducin (Hargrave et al.1993; Scot and John . 2008). Preceding from here all the steps occur in dark state, Transducin stimulates cGMP phosphodiesterase (PDE6) to hydrolyze cGMP to 5ââ¬â¢GMP by dissociation of à ³ subunit from PDE à ±Ã ² subunits, resulting a vast increase of 5ââ¬â¢GMP and decrease in cGMP concentration leading to the closing of the CNG channel. As a consequence, the outer membrane hyperpolarises to ~-70 mV and release of neurotransmitter is halted to bipolar cells, finally light signal information is sent by termination of transmitter release to the brain. For regeneration of dark current, the Rod cell needs to restore back the concentration of cGMP which is regulated by concentration of Ca+2 and by gyanylate cyclases (GC), Ca+2 molecules are bound by gyanylate activating proteins. In light conditions, where the CNG channels are closed and Ca+2 levels are low, the low level of calcium activates gyanylate activating proteins, which in turn stimulates gyanylate cyclases leading to production of cGMP. Increased level of cGMP causes to open CNG channel and dark current is restored (Jindrova. 1998). Additional mechanisms are found to be involved to restore the molecules from active to inactive state. Inactivation of Rh* by phosphorylation, catalyzed by rhodopsin kinase (Chenet al.1999). Phosphorylated rhodopsin is blocked by the protein arrestin by binding to it preventing activation of transducin, resulting in breakdown of activated rhodopsin (Xu et al,. 1997). The all trans retinal disassociates from opsin, diffuses to cytosol transported to outersegment then into pigmental epithelium where it is reconverted to 11- cis retinal, then the recycled 11 -cis retinal is transported back to outer segments. Peripherin- 2: This membrane protein is named on basis of localization studies done in 1987, which revealed that this protein was found localized around the periphery region of the outer segments, disks in rods and lamellae or disks in cones. (Molday et al,. 1987). In humans peripherin/rds is encoded by cDNA Peripherin/rds with open reading frame of 346 amino acids, weighing 39.3 KDa (Travis et al., 1989). Peripherin is an integral membrane glycoprotein having four trans membrane domains. When photoreceptor cells fail to develop in outer segments it results in retinal disorder named retinal degeneration slow (rds). Amino acid sequence of peripherin in bovine photoreceptor cell is 92.5% identical to protein encoded by rds gene in wild type mouse. Localization of these proteins was also found to be in rod outer segment (ROS) membranes, implying the role of peripherin-2 as a cause in retinal disorder. (Connell et al, .1991). Peripherin protein is also known and addressed with many other names like pho toreceptor peripherin, peripherin-2, peripherin/rds, rds/peripherin and rds. The two dimensional structure proposed consisted of four membrane spanning domains, with its N and C terminals located intracellular in extradiscal space, two extra cellular loops D1 and D2 ( EC1 and EC2) are localized with each containing a N-linked glycan in intradiscal space. The D2 loop among four species mouse, rat, human and bovine is found to be 92% identical, predicted that evolutionary drift in this loop could be a reason for its involvement in protein -protein interactions. (Connell and Molday, 1990; Travis et al., 1991). Fig: 2 Structure of Peripherin-2. D2 loop in intradiskal region is found to be key in protein folding and tetrameric subunit formation, changes in amino acids in this loop resulted in either protein misfolding or reduction in sediment coefficient of protein or even both, seven cysteine residues found in this loop to be important for intramolecular disulphide bonds, one of the cysteine residue is responsible for polymerization of tetramers (Loewen and Molday, 2000). When seven conserved cysteine residues were replaced they showed abnormalities, C214S linked mutant for adRP was not normally folding and interacting with rom-1 protein to form tetramer. While in C150S mutant failed to form intra molecular disulphide bonds, these results revealed that cysteine residues were crucial for folding of protein and subunit assembly, failure of these functions are linked to retinal disorders like adRP. (Goldberg et al., 1997). Human rom-1 protein with 351 amino acids exhibiting 35% identity to peripherin-2, hydropathy profiles revealed that rom-1 and peripherin-2 have a similar topology with four transmembrane domains, one of differences noted in the both the proteins were consensus sequence for N-linked glycosylation is absent in the rom-1 (Molday. 1994). Peripherin homologous protein rom-1 forms disulfide-linked dimers with each other (Bascom et al.,1992). Peripherin-2/rom-1 core native complex was found to exist as a tetramer, membrane curvature was found to induce with tetramer formation when they were reconstructed in lipid vesicles (Kevany et al,. 2013). Peripherin-2 associates with itself and also with its homologue rom-1 in forming homo and heterotetramers core, these tetramers when linked intramolecularly together by disulphide bonding forms octamers and higher order oligomers (Loewen and Molday. 2000). A highly conserved region within the C-terminal domain of peripherin/rds was found to be import ant for membrane fusion, it forms a complex with melanoregulin (MREG) onto the last five residues of the C-terminus (Gln341-Gly346), membrane fusion is important in organelle biogenesis, disc morphogenesis and disc shedding. (Boesze-Battaglia et al., 2007). Peripherin/rds plays a major role in rod and cone outer segment morphogenesis. In mice, absence of peripherin/rds leads to develop normal photoreceptor inner segments but they fail to form outer segments, these outer segments undergo apoptosis (Nir and Papermaster. 1986). Peripherin- 2 is found to have differential roles in rod and cone cells with respect to their binding partners. Peripherin 2 found to be binding with the Glutamic acid rich protein (GARP) portion of à ² subunit of rod CNG channel. This interaction is predicted to anchorage disc rim and rod plasma membrane, but in cone CNG channel such interaction was not observed, as GARP is not expressed in cone CNG channel or in other from. (Conley et al,.2010). Peripherin-2 links CNGB1a CNG channel subunit to rhodopsin, these three forms a complex localizing its contact between disk rims and plasma membrane regions. FRET experiments revealed that transmembrane -4 (TM4) of periperin-2 is key for rhodopsin interaction. In peripherin-2, G266D mutation specific to TM4 region, eliminated the specific binding capacity of peripherin-2 with rhodopsin (Becirovic et al,. 2014). Peripherin-2 being a multifunctional protein and mutations in peripherin/RDS gene results in a broad spectrum of retinal disorders like macular dystrophies, cone and cone-rod dystrophies and retinitis pigmentosa. Studying Peripherin/RDS mutations and protein structure elucidates pathophysiological mechanisms underlying these retinal disorders for effective therapeutic intervention (C.J.F. Boon et al,. 2008). Zscan29: At present, very less information is known and available regarding the function, structure and localization of this protein Zscan29. mRNA specific for this protein were found to be expressed in retina through RT- PCR experiments from mice different tissues. In mice 5 different isoforms of this protein were found, with longest isoform having 869 amino acids (aa), and other isoforms were of 834 aa, 548 aa,265 aa,206 aa. The isoform with 265 aa was found to interact with the C- terminus of CNGB1a sub unit of CNG channel. In long isoforms with 869aa and 834aa, a SCAN domain, a DUF2 domain, 2 GT-1 domains and 6 zinc finger domains were found. The scan domain is predicted to be a DNA binding domain and involved in transcription regulation, as this domain in other proteins were also found to be associated as transcription factors. DUF-2 Domain function is unclear and yet to be known, Two GT-1 domains of 79 aa each, were predicted to play a major role in light sensing mechanisms by binding GT trihelix transcription factors. (___citation__). In Arabidopsis GT-1 is predicted to respond to light signals via calcium dependent phosphorylaton, after GT-1 binding to GT cis element of light inducing gene (Bauer et al). Fig: 3 Isoforms of Zscan29 protein with its domains. Aims of this work: Analysis of Peripherin-2 cone mutation V268I: Verification of the interaction of WT peripherin-2 and peripherin-2 with mutation at V268I position with S-opsin, M-opsin and Rhodopsin via co immunoprecipitation from HEK293 cells. Interaction and localization of Peripherin-2, V268I mutation in mouse retina. Analysis of Peripherin-2 mutations at position P210: Verification of the interaction of peripherin-2 protein with mutations at P210 position with wild type Peripherin-2 and its homolog Rom-1 via coimmunoprecipitation from HEK293 cells. In vitro imaging of HEK293 cells expressing peripherin-2 protein with mutation at P210 position. Expression and localization of Peripherin-2, P210L and P210R mutations in mouse retina. Affinity purification of Anti-Zscan29 antibody and checking antibody efficiency.
Saturday, January 18, 2020
Cosmic Creation Myth
Cosmic Creation Myth across Culture Paper Kristin Sheffield HUM 105 For decades myths have been told about the development of the world. Each culture has their version of how life began. These myths are centered on creation; how the earth was created, how the sky, land or the sea was created, and how humans and animals were created. These myths give cultures the security of belief. Different cultures believe differently, but these beliefs help certain cultures to continue to face problems or issues, worship, and create happiness and peace. The Enuma ElishApsu, the father of Sweet Watersà and Tiamat, Mother of Salt Waters created 3 unruly children. The children gods were just being children, but unfortunately they were disrupting Tiamatââ¬â¢s peace. She grew to hate their behavior and asked Apsu to deal with them. When he tried they just ignored him. Due to their unwillingness to obey their parents Apsu's resolution was to destroy them. Tiamat was very upset by this resolution. S he told Apsu that his resolution was evil and they needed to be more understanding. Her pleas were ignored by Apsu. Apsu and Tiamatââ¬â¢s creations soon realized Apsu's evil plans to destroy them.At first they cried, and then they succumbed to their fate. However somehow they had befriended Ea, the wisest God, who eventually killed Apsu and made his co-conspirator his slave. This is a Babylonian Myth. This myth later became the reason for a national holiday in which they ââ¬Å"emphasized the reestablishment of orderâ⬠, (Rosenberg. 2006). The Creation of the Universe Ife Olorun, the god with the greatest knowledge, had a son, Obatala, who wanted to create land where Olokun, the goddess of endless waters and wild marshes ruled. Obatala went to his older brother for advice on how to proceed.His brother's gift was one of prophecy. He advised his brother and sent him on his way. Obatala did everything he said he'd do. He created land in the middle of marshy water; he then create d plants. But he wanted more and more. While drunk on wine, he started playing with clay. He asked Olorun to ââ¬Å"breathe life into themâ⬠, (Rosenberg. 2006). Once he sobered he realized they were imperfect. He decided never to drink that type of wine again and vowed to protect all the humans that suffered because he was drunk. He ââ¬Å"became the protector of all those who are born deformedâ⬠(Rosenberg. 006). This myth came from Africa; the Yoruba people. They showed more emotion in their stories; Love, jealousy, sympathy and anger. As with many myths, the creators of these myths were neither male nor female. They were groups of people. The Enuma Elish myth was from the Babylonians and also the Assyrians as well. For The Creation of Universe Ife, this myth came from the Yoruba people of Africa. Together these myths share similarities about suffering and appreciation for what they have. In these myths something vital has to be restored in order to move forward.With the Enuma Elish it was the balance between good and evil. With The Creation of Universe Ife he became the protector of imperfect people. Both The Enuma Elish and The Creation of Universe Ife had mainly water as the major element. In The Enuma Elish both parent gods were from Salt or Sweet waters. Olokun, in The Creation of Universe Ife was god of mash and wild waters. In both myths anything that disrupted peace made the waters ââ¬Å"surge back and forthâ⬠(Rosenberg. 2006). Another similarity was humans were created. In The Enuma Elisa Ea killed Kingu by severing his blood vessels.The first humans came from the blood. In The Creation of Universe Ife, Olorun ââ¬Å"breathed lifeâ⬠into the clay for Obatala creating humans. The difference was Obatala wanted companions, but Eaââ¬â¢s purpose was to have the humans ââ¬Å"serve the godsâ⬠(Rosenberg. 2006). These myths were designed to understand the unexplainable. Different cultures explained them differently. Each cultu re had god and goddesses. Stories of these gods and goddesses explained things to humans such as how we (humans) came to be; how the earth formed; why humans look differently from other humans or animals; etc.Different cultures believe how things came to be differently. It depends on their faith, religion, and beliefs as to what they will believe. In all the stories that are being told, it would only take a person with influence to announce the story is true in order for other people to start believing. Once other people start believing, the proof is optional. Reference Rosenberg, D. (2006). World Mythology: An anthology of great myths and epics (3rd ed. ). Chicago, IL: McGraw-Hill.
Friday, January 10, 2020
The Untold Story on Order College Research Paper Online That You Really Need to Read or Be Left Out
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