Pseudaminic acid synthase

Pseudaminic acid synthase
Identifiers
EC number 2.5.1.97
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum

Pseudaminic acid synthase (EC 2.5.1.97, PseI, NeuB3) is an enzyme with systematic name phosphoenolpyruvate:2,4-bis(acetylamino)-2,4,6-trideoxy-beta-L-altropyranose transferase (phosphate-hydrolysing, 2,7-acetylamino-transferring, 2-carboxy-2-oxoethyl-forming).[1] This enzyme catalyses the following chemical reaction

phosphoenolpyruvate + 2,4-bis(acetylamino)-2,4,6-trideoxy-beta-L-altropyranose + H2O 5,7-bis(acetylamino)-3,5,7,9-tetradeoxy-L-glycero-alpha-L-manno-2-nonulopyranosonic acid + phosphate

The enzyme requires a divalent metal ion, preferably Mn2+ and Co2+.

References

  1. Chou, W.K.; Dick, S.; Wakarchuk, W.W.; Tanner, M.E. (2005). "Identification and characterization of NeuB3 from Campylobacter jejuni as a pseudaminic acid synthase". J. Biol. Chem. 280 (43): 35922–35928. doi:10.1074/jbc.M507483200. PMID 16120604.
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