phosphoserine transaminase EC#: 2.6.1.52 • ChemWhat中文网

phosphoserine transaminase EC#: 2.6.1.52; 凯望编码 (ChemWhat Code): 1378194


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英文名	phosphoserine transaminase
Example Structure
别名	3-O-phospho-L-serine:2-oxoglutarate aminotransferase, 3-phosphoserine aminotransferase, AspAT, AtPSAT, BCIR PSAT, EhPSAT, hydroxypyruvic phosphate-glutamic transaminase, L-phosphoserine aminotransferase, phosphohydroxypyruvate transaminase, phosphohydroxypyruvic-glutamic transaminase, phosphoserine aminotransferase, PSAT, PSAT alpha, PSAT beta, PSAT1, PSerAT, serC, sll1559
EC Number	2.6.1.52
CAS编号	9030-90-4
Comments	A pyridoxal 5′-phosphate protein. This enzyme catalyses the second step in the phosphorylated pathway of serine biosynthesis [1,3] and the third step in pyridoxal 5′-phosphate biosynthesis in the bacterium?Escherichia coli?[3]. Pyridoxal 5′-phosphate is the cofactor for both activities and therefore seems to be involved in its own biosynthesis [4]. Non-phosphorylated forms of serine and threonine are not substrates [4]. The archaeal enzyme has a relaxed specificity and can act on?L-cysteate and?L-alanine as alternative substrates to?O-phospho-L-serine [7].
Cofactor	pyridoxal 5′-phosphate
History
Reactions	(1) O-phospho-L-serine + 2-oxoglutarate = 3-phosphonooxypyruvate + L-glutamate. (2) 4-phosphonooxy-L-threonine + 2-oxoglutarate = (3R)-3-hydroxy-2-oxo-4- phosphonooxybutanoate + L-glutamate.