Prediction of the amino acids added by the NRPS MAB_4690c and MAB_4691c. Each module contains an adenylation domain (A) to activate the amino acid, a thiolation domain (PCP), which is esterified by the activated amino acid, and a condensation domain (C) that transfers the amino acid to elongate the peptidic backbone. Four non-mandatory epimerases domains (E) and the thioesterase domain (Te) that releases the free peptide are annotated.