Aminotransferase, Class V

	Aminotransferase, Class V Aminotransferase class-V is an evolutionary conserved protein domain. This domain is found in amino transferases, and other enzymes including cysteine desulphurase EC:4.4.1.-. Aminotransferases share certain mechanistic features with other pyridoxal- phosphate dependent enzymes, such as the covalent binding of the pyridoxal- phosphate group to a lysine residue. On the basis of sequence similarity, these various enzymes can be grouped into subfamilies. This family is called class-V. Subfamilies Phosphoserine aminotransferase Cysteine desulfurase * Cysteine desulphurase related, unknown function * Cysteine desulphurases, SufS * Cysteine desulphurase related * 2-aminoethylphosphonate—pyruvate transaminase Human proteins containing this domain AGXT; KYNU; MOCOS; NFS1; PSAT1 Phosphoserine aminotransferase (PSA) also known as phosphohydroxythreonine aminotransferase (PSAT) is an enzyme that in humans is encoded by the ''PSA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Protein Domain In molecular biology, a protein domain is a region of a protein's polypeptide chain that is self-stabilizing and that folds independently from the rest. Each domain forms a compact folded three-dimensional structure. Many proteins consist of several domains, and a domain may appear in a variety of different proteins. Molecular evolution uses domains as building blocks and these may be recombined in different arrangements to create proteins with different functions. In general, domains vary in length from between about 50 amino acids up to 250 amino acids in length. The shortest domains, such as zinc fingers, are stabilized by metal ions or disulfide bridges. Domains often form functional units, such as the calcium-binding EF hand domain of calmodulin. Because they are independently stable, domains can be "swapped" by genetic engineering between one protein and another to make chimeric proteins. Background The concept of the domain was first proposed in 1973 by Wetlaufer aft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Phosphoserine Aminotransferase Phosphoserine transaminase (, ''PSAT'', ''phosphoserine aminotransferase'', ''3-phosphoserine aminotransferase'', ''hydroxypyruvic phosphate-glutamic transaminase'', ''L-phosphoserine aminotransferase'', ''phosphohydroxypyruvate transaminase'', ''phosphohydroxypyruvic-glutamic transaminase'', ''3-O-phospho-L-serine:2-oxoglutarate aminotransferase'', ''SerC'', ''PdxC'', ''3PHP transaminase'') is an enzyme with systematic name ''O-phospho-L-serine:2-oxoglutarate aminotransferase''. This enzyme catalyses the following chemical reaction : (1) O-phospho-L-serine + 2-oxoglutarate \rightleftharpoons 3-phosphonooxypyruvate + L-glutamate : (2) 4-phosphonooxy-L-threonine + 2-oxoglutarate \rightleftharpoons (3R)-3-hydroxy-2-oxo-4-phosphonooxybutanoate + L-glutamate This enzyme is a pyridoxal-phosphate protein. See also * PSAT1 Phosphoserine aminotransferase (PSA) also known as phosphohydroxythreonine aminotransferase (PSAT) is an enzyme that in humans is encoded by the ''PSAT1'' gene. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Cysteine Desulfurase Cysteine (symbol Cys or C; ) is a semiessential proteinogenic amino acid with the formula . The thiol side chain in cysteine often participates in enzymatic reactions as a nucleophile. When present as a deprotonated catalytic residue, sometimes the symbol Cyz is used. The deprotonated form can generally be described by the symbol Cym as well. The thiol is susceptible to oxidation to give the disulfide derivative cystine, which serves an important structural role in many proteins. In this case, the symbol Cyx is sometimes used. When used as a food additive, it has the E number E920. Cysteine is encoded by the codons UGU and UGC. The sulfur-containing amino acids cysteine and methionine are more easily oxidized than the other amino acids. Structure Like other amino acids (not as a residue of a protein), cysteine exists as a zwitterion. Cysteine has chirality in the older / notation based on homology to - and -glyceraldehyde. In the newer ''R''/''S'' system of designating chir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Cysteine Desulphurase Related, Unknown Function Cysteine (symbol Cys or C; ) is a semiessential proteinogenic amino acid with the formula . The thiol side chain in cysteine often participates in enzymatic reactions as a nucleophile. When present as a deprotonated catalytic residue, sometimes the symbol Cyz is used. The deprotonated form can generally be described by the symbol Cym as well. The thiol is susceptible to oxidation to give the disulfide derivative cystine, which serves an important structural role in many proteins. In this case, the symbol Cyx is sometimes used. When used as a food additive, it has the E number E920. Cysteine is encoded by the codons UGU and UGC. The sulfur-containing amino acids cysteine and methionine are more easily oxidized than the other amino acids. Structure Like other amino acids (not as a residue of a protein), cysteine exists as a zwitterion. Cysteine has chirality in the older / notation based on homology to - and -glyceraldehyde. In the newer ''R''/''S'' system of design ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Cysteine Desulphurases, SufS Cysteine (symbol Cys or C; ) is a semiessential proteinogenic amino acid with the formula . The thiol side chain in cysteine often participates in enzymatic reactions as a nucleophile. When present as a deprotonated catalytic residue, sometimes the symbol Cyz is used. The deprotonated form can generally be described by the symbol Cym as well. The thiol is susceptible to oxidation to give the disulfide derivative cystine, which serves an important structural role in many proteins. In this case, the symbol Cyx is sometimes used. When used as a food additive, it has the E number E920. Cysteine is encoded by the codons UGU and UGC. The sulfur-containing amino acids cysteine and methionine are more easily oxidized than the other amino acids. Structure Like other amino acids (not as a residue of a protein), cysteine exists as a zwitterion. Cysteine has chirality in the older / notation based on homology to - and -glyceraldehyde. In the newer ''R''/''S'' system of design ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]