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phosphoserine transaminase
Cat No.
EXWM-2894
Description
A pyridoxal-phosphate protein. This enzyme catalyses the second step in the phosphorylated pathway of serine biosynthesis in Escherichia coli. It also catalyses the third step in the biosynthesis of the coenzyme pyridoxal 5'-phosphate in Escherichia coli (using Reaction 2 above). In Escherichia coli, pyridoxal 5'-phosphate is synthesized de novo by a pathway that involves EC 1.2.1.72 (erythrose-4-phosphate dehydrogenase), EC 1.1.1.290 (4-phosphoerythronate dehydrogenase), EC 2.6.1.52 (phosphoserine transaminase), EC 1.1.1.262 (4-hydroxythreonine-4-phosphate dehydrogenase), EC 2.6.99.2 (pyridoxine 5'-phosphate synthase) and EC 1.4.3.5 (with pyridoxine 5'-phosphate as substrate). Pyridoxal phosphate is the cofactor for both activities and therefore seems to be involved in its own biosynthesis. Non-phosphorylated forms of serine and threonine are not substrates.
Form
Liquid or lyophilized powder
Enzyme Commission Number
CAS No.
9030-90-4
Storage
Store it at +4 ºC for short term. For long term storage, store it at -20 ºC～-80 ºC.
Synonyms
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
Reaction
(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
Notes
This item requires custom production and lead time is between 5-9 weeks. We can custom produce according to your specifications.
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