TY - RPRT TI - Mutation affecting peptide bond formation in nikkomycin biosynthesis. AU - P Engel AU - A H Ullah PY - 1988 DO - 10.1016/s0006-291x(88)80898-2 UR - https://pubmed.ncbi.nlm.nih.gov/3190676/ ID - 3190676 ER -