Peptide waa walax bayochemical ah oo u dhaxaysa amino acid iyo borotiinka. Waxay leedahay miisaan molecular ka yar borotiinka, laakiin miisaan ka weyn kan amino acid. Waa qayb ka mid ah borotiinka. Taasi waa in la yidhaahdo, laga bilaabo in ka badan laba ama ilaa daraasiin amino acid peptide bond polymerization galay peptide ah, ka dibna ka peptides badan oo leh silsilado dhinaca polymerization galay borotiin ah. Amino acid laguma magacaabi karo peptide, waa in uu ka badan yahay laba asiidh oo amino ah oo ku xidhan iskudhis silsilad peptide ah oo loogu yeedho peptide; Amino acids badan oo isku qasan laguma yeero peptides; Amino acids waa in lagu xidhaa xidhmooyinka peptide, samaynta "silsiladda amino acid", "xadhka amino acids", xadhkaha amino acids waxa lagu magacaabi karaa peptide. .