polypeptide, chain of amino acids linked by peptide bonds CO-NH, a component of protein

phallotoxin (biochemistry)

peptide group; peptide unit

peptide chain (chain of amino acids making up protein)

peptide bond CO-NH; bond in protein between carboxyl radical and amino radical

endorphin

peptide unit (on protein chain)

peptidoglycan (PG) or murein (polymer of sugars and amino acids forming cell wall)

(loanword) semaglutide – drug used to treat type 2 diabetes and obesity, marketed under the trademarks Ozempic, Rybelsus and Wegovy

aspartame C14H18N2O (artificial sweetener)