| / English Dictionary |
PEPTIDE BOND
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
The primary linkage of all protein structures; the chemical bond between the carboxyl groups and amino groups that unites a peptide
Synonyms:
peptide bond; peptide linkage
Classified under:
Nouns denoting natural phenomena
Hypernyms ("peptide bond" is a kind of...):
bond; chemical bond (an electrical force linking atoms)
Context examples:
Enzymes acting on peptide bonds.
(Peptidase, NCI Thesaurus)
Amino Acid Biosynthesis consists of cellular enzymatic reactions that produce amino acids, organic compounds containing an amino and a carboxyl group and often used in protein synthesis by the formation of peptide bonds during ribosomal translation of mRNA.
(Amino Acid Biosynthesis, NCI Thesaurus)
A right-handed spiral conformation; the a-helix has a pitch of 5.4 A and has 3.6 amino acid residues per turn; every main chain C=O and N-H group is hydrogen-bonded to a peptide bond 4 residues away; the peptide planes are roughly parallel with the helix axis and the dipoles within the helix are aligned, i.e. all C=O groups point in the same direction and all N-H groups point the other way; side chains point outward from helix axis and are generally oriented towards its amino-terminal end.
(Alpha Helix, NCI Thesaurus)
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