MERSACIDIN IS A TETRACYCLIC PEPTIDE. POST TRANSLATIONAL MATURATION
OF LANTIBIOTICS INVOLVES THE ENZYMIC CONVERSION OF THR, AND SER INTO
DEHYDRATED AA AND THE FORMATION OF THIOETHER BONDS WITH CYSTEINE. THE
CARBOXY-TERMINAL BETA-METHYLLANTHIONINE UNDERGOES
DECARBOXYLATION. THIOETHER BONDS WITH CYSTEINE RESULT IN FOUR
RINGS. THIS IS FOLLOWED BY MEMBRANE TRANSLOCATION AND CLEAVAGE OF THE
MODIFIED PRECURSOR.
NAI-107 IS A TETRACYCLIC PEPTIDE. POST TRANSLATIONAL MATURATION OF LANTIBIOTICS INVOLVES THE ENZYMIC CONVERSION OF THR, AND SER INTO DEHYDRATED AA AND THE FORMATION OF THIOETHER BONDS WITH CYSTEINE. THE CARBOXY-TERMINAL BETA-METHYLLANTHIONINE UNDERGOES DECARBOXYLATION. THIOETHER BONDS WITH CYSTEINE RESULT IN FOUR RINGS. THIS IS FOLLOWED BY MEMBRANE TRANSLOCATION AND CLEAVAGE OF THE MODIFIED PRECURSOR.
