UniProt functional annotation for P15555

UniProt code: P15555.

Organism: Streptomyces sp. (strain R61).
Taxonomy: Bacteria; Actinobacteria; Streptomycetales; Streptomycetaceae; Streptomyces.
 
Function: Catalyzes distinct carboxypeptidation and transpeptidation reactions during the last stages of wall peptidoglycan synthesis. Mistaking a beta-lactam antibiotic molecule for a normal substrate (i.e. a D-alanyl-D-alanine-terminated peptide), it becomes immobilized in the form of a long-lived, serine-ester-linked acyl enzyme and thus behave as penicillin-binding protein (PBP).
 
Catalytic activity: Reaction=Preferential cleavage: (Ac)(2)-L-Lys-D-Ala-|-D-Ala. Also transpeptidation of peptidyl-alanyl moieties that are N-acyl substituents of D-alanine.; EC=3.4.16.4;
Pathway: Cell wall biogenesis; peptidoglycan biosynthesis.
Subcellular location: Secreted.
Similarity: Belongs to the peptidase S12 family. {ECO:0000305}.

Annotations taken from UniProtKB at the EBI.