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Protein Structure - Macmillan Learning
Protein Structure - Macmillan Learning

... 4.1 Primary Structure The primary structure of a protein is the sequence of amino acids that make up the polypeptide chain. Many proteins range in size from 100 to 1,000 amino acid residues, although there are many examples of proteins that fall outside this range. In this section, we first examine ...
Effects of phosphatidylethanolamine glycation on lipid–protein
Effects of phosphatidylethanolamine glycation on lipid–protein

... Amadori product. In later stages Amadori products undergo a series of complex irreversible inter- and intra-molecular reactions to produce a heterogeneous group of products called AGEs (advanced glycation end-products) [2]. Both the early products and the end-products of glycation affect the physico ...
Peer-reviewed Article PDF
Peer-reviewed Article PDF

... experiment, the construct containing the studied protein linked to fluorescence protein was transfected and expressed in the target cells. FRAP experiment can be setup in three simple steps. First, pre-bleach Image was recorded using low intensity light as control. Second, an interested region was c ...
A Role for A-to-I RNA Editing in Temperature Adaptation
A Role for A-to-I RNA Editing in Temperature Adaptation

... FIGURE 1. Predicted and observed frequencies of codons targeted and created by A-to-I RNA editing All codons that could be edited to produce a different amino acid were identified. The relative frequencies of these codons in gene coding regions were then determined with the codon usage tables availa ...
Viruses as Building Blocks for Materials and Devices
Viruses as Building Blocks for Materials and Devices

... expressed in cells it is possible to obtain virus-like particles (VLPs) that either do not carry any genetic material or that incorporate only selected pieces of code. It is also possible to produce viral chimeras that carry proteins of different viral origins. Viruses can be used in methods of dire ...
Interconnections Between RNA-Processing Pathways Revealed by
Interconnections Between RNA-Processing Pathways Revealed by

... strains to reach A600 values near 0.5. Cells were harvested by centrifugation at 5000xg for 5 min, ...
Isolation of casein from milk
Isolation of casein from milk

... • Infants are usually born with a storage supply of iron large enough to meet their needs for several weeks. Vitamin C is easily secured through an orange juice supplement. • There are three kinds of proteins in milk: 1. caseins, 2. lactalbumins 3. lactoglobulins. All are globular ...
LWT Food Science and Technology
LWT Food Science and Technology

... investigation. However, it must be emphasized that extensive consumption of energy as alcohol may predispose to obesity and other problems and that cigarette smoking can negate the benefits of moderate beer consumption (Williamson et al., 1987). Some authors have shown that the positive biochemical c ...
Recognizing metal and acid radical ion
Recognizing metal and acid radical ion

... function for carrying and transferring oxygen through blood, a fundamental life process of all vertebrates (except for the fish family channichthyidae) and some of invertebrates (Hsia, 1998); the binding of metal Zn2þ ions with nucleases and transcription factors plays a critical structural role in ...
Identification of fungal oxaloacetate hydrolyase within the
Identification of fungal oxaloacetate hydrolyase within the

... used throughout this article. From this structural alignment we were able to segregate sequences into subclasses, one of which we named the OAH-like class of fungal proteins. The sequences of the members of this subclass from fungi with confirmed OAH activity12,16–19 were shown to be distinguished b ...
An 83 kDa 0-GlcNAc-Glycoprotein Is Found in the Axoplasm and
An 83 kDa 0-GlcNAc-Glycoprotein Is Found in the Axoplasm and

... 1988) but axoplasm has not been examined previously. The glycoproteins recognized by the galactosyltransferasecomprise only a small subsetof the total polypeptides sincesilver-stained gels of these fractions contained so many polypeptides that it wasnot even possibleto identify any of the putative 0 ...
A bioinformatics study concerning the structural and functional
A bioinformatics study concerning the structural and functional

... palmitoylation also seem to be involved in caveolin–protein interactions. Tyrosine phosphorylation of cav1 occurs at its N-terminal domain (Tyr14) and phosphorylated cav1 serves as a scaffolding protein to recruit SH2-domain containing proteins.18 Serine phosphorylation occurs at Ser80 and is respon ...
Sequence-based predictions of membrane-protein topology, homology and insertion
Sequence-based predictions of membrane-protein topology, homology and insertion

... spends on earth before dividing itself into two new cells, or worse, committing suicide (Hengartner 2000), a myriad of biochemical reactions will have taken place, each of which is required for the development, survival and propagation of the cell and the genetic material it carries. Key players in ...
Halogens: Quaternary Disinfectant Oxidizing
Halogens: Quaternary Disinfectant Oxidizing

... Characteristics of Selected Disinfectants Disinfectant Category Sample Trade Names ...
Unknown title - Sigma
Unknown title - Sigma

... Post-genomic research efforts, high-throughput methodology and advances in areas such as mass spectrometry or electron microscopy have revealed that biological functioning is controlled by biomolecular interaction networks, often in a heterogeneous and dense molecular environment. For example, the c ...
Acquisition, Conservation, and Loss of Dual
Acquisition, Conservation, and Loss of Dual

... using MEGA 5 (see “Materials and Methods”). B, Table of Top proteins from Arabidopsis, rice, P. patens, P. glauca, C. reinhardtii, and C. variabilis with genomic loci numbers, targeting predictions (see “Materials and Methods”), and experimental localization based on GFP targeting. C, GFP images of ...
NON-CANONICAL TRANSCRIPTION INITIATION: THE EXPANDING
NON-CANONICAL TRANSCRIPTION INITIATION: THE EXPANDING

... to the transcription machinery inside to alter gene expression. The central enzyme of transcription in bacteria is DNA-dependent RNA polymerase. It consists of an alpha dimer that holds together the catalytic subunits  and ’, and the small subunit  that binds to ’. This core enzyme (2’) is c ...
PDF
PDF

... for 24 h in 10% formol/saline or 95% ethanol. Where appropriate, exocoelomic and amniotic fluids and foetal blood were collected and tested for the presence of heterologous proteins by means of the interfacial ring test and in some cases immunoelectrophoresis. Subsequent dehydration, clearing and em ...
Genome segment 5 of Antheraea mylitta cytoplasmic polyhedrosis
Genome segment 5 of Antheraea mylitta cytoplasmic polyhedrosis

... Background: Antheraea mylitta cytoplasmic polyhedrosis virus (AmCPV), a cypovirus of Reoviridae family, infects non mulberry Indian silk worm, Antheraea mylitta, and contains eleven segmented double stranded RNA in its genome (S1-S11). Some of its genome segments (S1-S3, and S6-S11) have been previo ...
Identification of Pexl3p, a Peroxisomal Membrane Receptor for the
Identification of Pexl3p, a Peroxisomal Membrane Receptor for the

... CGA3'. The amplification product of the expected of size (1,909 bp) was isolated and subcloned (XhoI/BamHI) into pSK(+)AXbaI, a derivative of bluescript SK (Stratagene, La Jolla, CA) in which the XbaI and Spel sites of the vector had been destroyed by XbaI/Spel digestion and religation. The authenti ...
Genome-wide Screen for Inner Nuclear Membrane
Genome-wide Screen for Inner Nuclear Membrane

... nuclear membrane remains intact during mitosis. This difference perhaps eliminates some of the dynamics that render analyses of nuclear membrane organization particularly difficult in higher eukaryotes. The INM is comprised both of numerous integral transmembrane proteins as well as peripherally ass ...
Chimie de l`H érédité.
Chimie de l`H érédité.

... they are always constructed from two dissociable sub­units, one approximately twice the size of the other. Over 30 different structural proteins are found in each 70s  E. coli  ribosomal particle in addition to variable lengths of a nascent growing polypeptide chain. Approximately 10 are found in th ...
Topology Prediction of Membrane Proteins
Topology Prediction of Membrane Proteins

... Why are membrane proteins so challenging? There are several explanations, but the major reason is the interaction with the membrane lipids that is necessary for correct folding. Without the amphipathic lipid molecules a membrane protein does not fold into its native structure. This has many implicat ...
Natural antisense RNAs as mRNA regulatory elements in bacteria: a
Natural antisense RNAs as mRNA regulatory elements in bacteria: a

... and their ability to be regulated by physical parameters (thermosensors) or small molecules (riboswitches). Other high-throughput screens have made it possible to design artificial metabolite analogs that modulate trans-acting regulatory RNAs with two functions: for example, a riboswitch coupled to ...
Proteomic analyses of Oryza sativa mature pollen reveal novel
Proteomic analyses of Oryza sativa mature pollen reveal novel

... poorly understood. Here, we identified 322 unique proteins, most of which were not reported previously to be in pollen, from mature pollen of Oryza sativa L. ssp japonica using a proteomic approach, 23% of them having more than one isoform. Functional classification reveals that an overrepresentatio ...
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SR protein



SR proteins are a conserved family of proteins involved in RNA splicing. SR proteins are named because they contain a protein domain with long repeats of serine and arginine amino acid residues, whose standard abbreviations are ""S"" and ""R"" respectively. SR proteins are 50-300 amino acids in length and composed of two domains, the RNA recognition motif (RRM) region and the RS binding domain. SR proteins are more commonly found in the nucleus than the cytoplasm, but several SR proteins are known to shuttle between the nucleus and the cytoplasm.SR proteins were discovered in the 1990s in Drosophila and in amphibian oocytes, and later in humans. In general, metazoans appear to have SR proteins and unicellular organisms lack SR proteins.SR proteins are important in constitutive and alternative pre-mRNA splicing, mRNA export, genome stabilization, nonsense-mediated decay, and translation. SR proteins alternatively splice pre-mRNA by preferentially selecting different splice sites on the pre-mRNA strands to create multiple mRNA transcripts from one pre-mRNA transcript. Once splicing is complete the SR protein may or may not remain attached to help shuttle the mRNA strand out of the nucleus. As RNA Polymerase II is transcribing DNA into RNA, SR proteins attach to newly made pre-mRNA to prevent the pre-mRNA from binding to the coding DNA strand to increase genome stabilization. Topoisomerase I and SR proteins also interact to increase genome stabilization. SR proteins can control the concentrations of specific mRNA that is successfully translated into protein by selecting for nonsense-mediated decay codons during alternative splicing. SR proteins can alternatively splice NMD codons into its own mRNA transcript to auto-regulate the concentration of SR proteins. Through the mTOR pathway and interactions with polyribosomes, SR proteins can increase translation of mRNA.Ataxia telangiectasia, neurofibromatosis type 1, several cancers, HIV-1, and spinal muscular atrophy have all been linked to alternative splicing by SR proteins.
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