. "the primary linkage of all protein structures; the chemical bond between the carboxyl groups and amino groups that unites a peptide"@en-us . "peptide linkage"@en-us . "110699619"@en-us . . . . "peptide bond"^^ . . . "0"^^ . . "11438260-n"^^ . "peptide bond"@en-us . . . . "0"^^ . . "111438260"^^ .