IUBMB Enzyme Nomenclature


Accepted name: UDP-4-amino-4,6-dideoxy-N-acetyl-β-L-altrosamine transaminase

Reaction: UDP-4-amino-4,6-dideoxy-N-acetyl-β-L-altrosamine + 2-oxoglutarate = UDP-2-acetamido-2,6-dideoxy-β-L-arabino-hex-4-ulose + L-glutamate

Glossary: pseudaminic acid = 5,7-bis(acetylamino)-3,5,7,9-tetradeoxy-L-glycero-α-L-manno-2-nonulopyranosonic acid

Other name(s): PseC

Systematic name: UDP-4-amino-4,6-dideoxy-L-N-acetyl-β-L-altrosamine:2-oxoglutarate aminotransferase

Comments: A pyridoxal-phosphate protein. The enzyme is involved in biosynthesis of pseudaminic acid.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number:


1. Schoenhofen, I.C., McNally, D.J., Vinogradov, E., Whitfield, D., Young, N.M., Dick, S., Wakarchuk, W.W., Brisson, J.R. and Logan, S.M. Functional characterization of dehydratase/aminotransferase pairs from Helicobacter and Campylobacter: enzymes distinguishing the pseudaminic acid and bacillosamine biosynthetic pathways. J. Biol. Chem. 281 (2006) 723-732. [PMID: 16286454]

2. Schoenhofen, I.C., Lunin, V.V., Julien, J.P., Li, Y., Ajamian, E., Matte, A., Cygler, M., Brisson, J.R., Aubry, A., Logan, S.M., Bhatia, S., Wakarchuk, W.W. and Young, N.M. Structural and functional characterization of PseC, an aminotransferase involved in the biosynthesis of pseudaminic acid, an essential flagellar modification in Helicobacter pylori. J. Biol. Chem. 281 (2006) 8907-8916. [PMID: 16421095]

[EC created 2011]

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