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SARS: Severe Acute Respiratory Syndrome
SARS: Severe Acute Respiratory Syndrome

... Importing Sequences from Protein Sequence Databases In this section of the tutorial, you will learn how to search databases for a specific protein sequence. You will be working with the sequence that encodes the Replicase protein and a few others of the SARS virus. Notice the scrollable textbox on t ...
Co-opting sulphur-carrier proteins from primary metabolic pathways
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... and near the BE-7585A biosynthetic gene cluster impeded further functional characterization of BexX. To search for the sulphur-carrier protein required for the BexX reaction, the entire genome of A. orientalis was sequenced. A total of 9,210 coding open reading frames were identified in approximatel ...
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E. coli - Semantic Scholar
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Chapter 4.32
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... moiety is transferred en bloc from a long-chain isoprenoid lipid (dolichol) onto the specific N-glycosylation site via an N-glycosidic linkage to the asparagine (Asn) residue of a nascent polypeptide. The N-glycosidic site has Asn-X-Ser/ Thr as the consensus sequence,3 in which X is any amino acid e ...
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Cold Shock Proteins
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Identification and expression of the first nonmammalian amyloid‐β
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Phenylalanineaminopeptidase of L. pneumophila
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Structure and Function of the Groucho Gene Family and Encoded
Structure and Function of the Groucho Gene Family and Encoded

... respectively. Studies using in vitro biochemistry, transcriptional repression assays in cells, and Drosophila genetics found that the Groucho proteins are essential corepressors for the Hairy-related proteins (Paroush et al., 1994; Fisher et al., 1996; Grbavec and Stifani, 1996; Jimenez et al., 1997 ...
Machine learning methods for Protein Secondary Structure Prediction
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... Secondary structure prediction can provide useful information to improve other sequence and structure analysis methods, such as sequence alignment and 3-D modeling. ...
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... – ICAT (isotope-coded affinity tag) – ITRAQ ...
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BIOMOLECULES: INTRODUCTION, STRUCTURE AND FUNCTION
BIOMOLECULES: INTRODUCTION, STRUCTURE AND FUNCTION

... Keratins of skin, hair and nail; silk protein and collagens are the best examples of this class of proteins. Very often we come across proteins that can not be placed in either of these categories. They have large size and possess irregular structures with limited contents of conventional structures ...
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... to PTM, proteolysis and differential mRNA splicing, the increase of one version of a protein does not automatically indicate increase in overall protein expression or activities. Downstream biochemical analyses are usually required to verify that protein changes are indeed “functional”. For LC/MS-ba ...
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EXAMINATIONOFTHESUBUNITSOFHYN HYDROGENASE INT
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... mankind is the global energy crisis. The fossil energy sources are almost depleted and the demand for energy is growing. The Sun energy is an unexhaustible energy source, which can be utilized by photosynthetic organisms which produce organic carbon molecules from inorganic compounds. However, the c ...
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... The last fail-safe mechanism in the mitochondrial pathway are IAP (Inhibitor of Apoptosis Proteins), another important family of anti-apoptotic proteins.[4] Their mission consists in blocking caspase-8 and 9 initiated events; and for this some family members are able to inhibit proteolytic activity ...
Analysis - The Journal of Cell Biology
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... fundamental role of phosphatases is more recent. Through extensive biochemical and genetic analysis, we now know that pathways are not simply switched on with kinases and off with phosphatases. Rather, it is the balance of phosphorylation that is often critical. Protein phosphorylation can regulate ...
AP Biology Chapter 5 Biological Macromolecules Guided Notes
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Importance of main-chain hydrophobic free energy to the stability of

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Post-Transcriptional Regulation of Gene Expression: the Many Hats
Post-Transcriptional Regulation of Gene Expression: the Many Hats

... The multi-tasking hnRNP A/B family of proteins play important roles in cytoplasmic mRNA trafficking. Two prime needs for advancement of our understanding of RNA trafficking are the precise identification of further cis-acting elements and their trans-acting factors, and elucidation of the 3D structu ...
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Protein purification



Protein purification is a series of processes intended to isolate one or a few proteins from a complex mixture, usually cells, tissues or whole organisms. Protein purification is vital for the characterization of the function, structure and interactions of the protein of interest. The purification process may separate the protein and non-protein parts of the mixture, and finally separate the desired protein from all other proteins. Separation of one protein from all others is typically the most laborious aspect of protein purification. Separation steps usually exploit differences in protein size, physico-chemical properties, binding affinity and biological activity. The pure result may be termed protein isolate.The methods used in protein purification can roughly be divided into analytical and preparative methods. The distinction is not exact, but the deciding factor is the amount of protein that can practically be purified with that method. Analytical methods aim to detect and identify a protein in a mixture, whereas preparative methods aim to produce large quantities of the protein for other purposes, such as structural biology or industrial use. In general, the preparative methods can be used in analytical applications, but not the other way around.
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