FEATURES

FAMILY

DESCRIPTION

Also known as TENA_BACSU, tenA. Catalyzes an amino-pyrimidine hydrolysis reaction at the C5' of the pyrimidine moiety of thiamine compounds, a reaction that is part of a thiamine salvage pathway. Thus, catalyzes the conversion of 4-amino-5-aminomethyl-2-methylpyrimidine to 4-amino-5-hydroxymethyl-2-methylpyrimidine (HMP). To a lesser extent, is also able to catalyze the hydrolytic cleavage of thiamine; however, this thiaminase activity is unlikely to be physiologically relevant. Therefore, is involved in the regeneration of the thiamine pyrimidine from thiamine degraded products present in the environment, rather than in thiamine degradation. Homotetramer.

EXTERNAL LINKS

uniprot
enzyme classification

tenA

Aminopyrimidine aminohydrolase

tenA

Molecular Synopsis