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aminotransferase class I/II-fold pyridoxal phosphate-dependent enzyme
DegT/DnrJ/EryC1/StrS family aminotransferase
The members of this family are probably all pyridoxal-phosphate-dependent aminotransferase enzymes with a variety of molecular functions. The family includes StsA Swiss:P72454, StsC Swiss:P77952 and StsS [1]. The aminotransferase activity was demonstrated for purified StsC protein as the L-glutamine:scyllo-inosose aminotransferase EC:2.6.1.50, which catalyses the first amino transfer in the biosynthesis of the streptidine subunit of streptomycin [1]. [1]. 9238101. Identification of stsC, the gene encoding the L-glutamine:scyllo-inosose aminotransferase from streptomycin-producing Streptomycetes. Ahlert J, Distler J, Mansouri K, Piepersberg W;. Arch Microbiol 1997;168:102-113. (from Pfam)
8-amino-7-oxononanoate synthase
8-amino-7-oxononanoate synthase catalyzes the decarboxylative condensation of pimeloyl-[acyl-carrier protein] and L-alanine to produce 8-amino-7-oxononanoate (AON), [acyl-carrier protein], and carbon dioxide in the biosynthesis of biotin
7-keto-8-aminopelargonic acid synthetase is an alternate name. This model represents 8-amino-7-oxononanoate synthase, the BioF protein of biotin biosynthesis. This model is based on a careful phylogenetic analysis to separate members of this family from 2-amino-3-ketobutyrate and other related pyridoxal phosphate-dependent enzymes. In several species, including Staphylococcus and Coxiella, a candidate 8-amino-7-oxononanoate synthase is confirmed by location in the midst of a biotin biosynthesis operon but scores below the trusted cutoff of this model.
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