| Comment | Members of this protein family are probable NAD-dependent dehydrogenases related to the alanine dehydrogenase of Archaeoglobus fulgidus (see TIGR02371, PDB structure 1OMO and PMID:15313611) and more distantly to ornithine cyclodeaminase. Members include the staphylobactin biosynthesis protein SbnB and tend to occur in contexts suggesting non-ribosomal peptide synthesis, always adjacent to (occasionally fused with) a pyridoxal phosphate-dependent enzyme, SbnA. The pair appears to provide 2,3-diaminopropionate for biosynthesis of siderophores or other secondary metabolites. |
