. "\"Activation of an amino acid for incorporation into a peptide by a nonribosomal process, catalyzed by subunits of nonribosomal peptide synthase. The amino acid is adenylated at its carboxylate group (ATP-dependent) then transferred to the thiol group of an enzyme-bound phosphopantetheine cofactor.\" [GOC:jl, PMID:9250661, PMID:9712910]" . . "amino acid adenylylation by nonribosomal peptide synthase" . "amino acid adenylation by nonribosomal peptide synthase" . "amino acid adenylation by NRPS" . .