peptide bond


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Related to peptide bond: Dipeptide bond

bond

 [bond]
the linkage between atoms or radicals of a chemical compound, or the symbol representing this linkage and indicating the number and attachment of the valencies of an atom in constitutional formulas, represented by a pair of dots or a line between atoms, e.g., H—O—H, H—C≡C—H or H:O:H, H:C:::C:H.
coordinate covalent bond a covalent bond in which one of the bonded atoms furnishes both of the shared electrons.
covalent bond a chemical bond between two atoms or radicals formed by the sharing of a pair (single bond), two pairs (double bond), or three pairs of electrons (triple bond).
disulfide bond a strong covalent bond, —S—S—, important in linking polypeptide chains in proteins, the linkage arising as a result of the oxidation of the sulfhydryl (SH) groups of two molecules of cysteine.
high-energy phosphate bond an energy-rich phosphate linkage present in adenosine triphosphate (ATP), phosphocreatine, and certain other biological molecules. On hydrolysis at pH 7 it yields about 8000 calories per mole, in contrast to the 3000 calories yielded by phosphate esters. The bond stores energy that is used to drive biochemical processes, such as the synthesis of macromolecules, contraction of muscles, and the production of the electrical potentials for nerve conduction.
high-energy sulfur bond an energy-rich sulfur linkage, the most important of which occurs in the acetyl-CoA molecule, the main source of energy in fatty acid biosynthesis.
hydrogen bond a weak, primarily electrostatic, bond between a hydrogen atom bound to a highly electronegative element (such as oxygen or nitrogen) in a given molecule, or part of a molecule, and a second highly electronegative atom in another molecule or in a different part of the same molecule.
ionic bond a chemical bond in which electrons are transferred from one atom to another so that one bears a positive and the other a negative charge, the attraction between these opposite charges forming the bond.
peptide bond the —CO—NH— linkage formed between the carboxyl group of one amino acid and the amino group of another; it is an amide linkage joining amino acids to form peptides.

pep·tide bond

the common link (-CO-NH-) between amino acids in proteins, actually a substituted amide, formed by elimination of H2O between the -COOH of one amino acid and the H2N- of another. Compare: eupeptide bond, isopeptide bond.

peptide bond

n.
The chemical bond between carboxyl groups and amino groups of neighboring amino acids, forming an amide group and constituting the primary linkage of all protein structures.

pep·tide bond

(pep'tīd bond)
The common link (-CO-NH-) between amino acids in proteins, formed by elimination of H2O between the -COOH of one amino acid and the H2N- of another.

peptide bond

A covalent bond formed between amino acids during protein synthesis. The OH- on a carbon atom links with the H- on a nitrogen atom to form a water molecule which is given off as each peptide bond is formed. Amino acids linked by peptide bonds form dipeptides, tripeptides or polypeptides.
Peptide bondclick for a larger image
Fig. 249 Peptide bond . Molecular structure. R1 R2 distinctive side-chains for different amino acids.

peptide bond

a covalent C arbon-N itrogen bond that joins the carboxyl group of one AMINO ACID to the amino group of another (with loss of a water molecule). See Fig. 249 . Many amino acids are joined by peptide bonds to form a POLYPEPTIDE CHAIN.

pep·tide bond

(pep'tīd bond)
The common link (-CO-NH-) between amino acids in proteins.

bond

the linkage between atoms or radicals of a chemical compound, or the symbol representing this linkage and indicating the number and attachment of the valencies of an atom in constitutional formulas, e.g. H−O−H, H−C= C−H and can be represented by a pair of dots between atoms, e.g. H:O:H, H:C:::C:H.

coordinate covalent bond
a covalent bond in which one of the bonded atoms furnishes both of the shared electrons.
covalent bond
a chemical bond between two atoms or radicals formed by the sharing of a pair (single bond), two pairs (double bond) or three pairs of electrons (triple bond).
disulfide bond
a strong covalent bond, −S−S−, important in linking polypeptide chains in proteins, the linkage arising as a result of the oxidation of the sulfhydryl (SH) groups of two molecules of cysteine.
high-energy phosphate bond
an energy-rich phosphate linkage present in adenosine triphosphate (ATP), phosphocreatine and certain other biological molecules. On hydrolysis at pH 7 it yields about 8000 calories per mole, in contrast to the 3000 calories yielded by phosphate esters. The bond stores energy that is used to drive biochemical processes, such as the synthesis of macromolecules, contraction of muscles, and the production of the electrical potentials for nerve conduction.
high-energy sulfur bond
an energy-rich sulfur linkage, the most important of which occurs in the acetyl-CoA molecule, the main source of energy in fatty acid biosynthesis.
human-animal bond
the psychological interdependence between humans and companion animals.
hydrogen bond
a weak, primarily electrostatic, bond between a hydrogen atom bound to a highly electronegative element (such as oxygen or nitrogen) in a given molecule, or part of a molecule, and a second highly electronegative atom in another molecule or in a different part of the same molecule.
ionic bond
a chemical bond in which electrons are transferred from one atom to another so that one bears a positive and the other a negative charge, the attraction between these opposite charges forming the bond.
peptide bond
the −CO−NH− linkage formed between the carboxyl group of one amino acid and the amino group of another; it is an amide linkage joining amino acids to form peptides.
phosphoanhydride bond
a high energy bond present in ATP.
phosphodiester bond
links between nucleotides in nucleic acids.
References in periodicals archive ?
PhD, vice president of technology, "The fastest way to break down gluten is to cleave peptide bonds internally and externally.
Multiple enzymes, such as chymotrypsin and pepsin, would be capable of hydrolyzing the peptide bonds on the carboxy side of leucine and phenylalanine residues in ANPsp; however, the actual candidates responsible remain to be determined.
It begins to break down proteins by hydrolysis of the peptide bonds that link amino acids together in the polypeptide chain that forms the protein.
mass reporter) by a covalent labile bond that is differentially cleavable with respect to peptide bonds (e.
Arthred is a protein consisting of a series of 19 different amino acids joined by peptide bonds.
My work shows how you can take information that exists in base pairs [as in the hydrogen-bonded pairs in DNA] and use it to drive chemical reactions that make amide and peptide bonds [as in proteins]," Rebek says.
The technology is derived from solid phase peptide synthesis, but with the crucial difference that adjacent monomers are connected through pairs of bonds, rather than through single peptide bonds, thus forming rigid, spiro-ladder oligomers instead of floppy peptide chains capable of assuming numerous shapes.
In hair, the keratin in the cortex has peptide bonds and hydrogen bonds that supply strength and elasticity to the cortex and help keep it together.
The detection is based on ultraviolet absorbance measurements at 200 rim (Capillarys, Sebia) or at 214 nm (Paragon 2000, Beckman Coulter), which correspond to the absorption of peptide bonds in proteins.
5-LOXIN(R) was shown to inhibit the expression of matrix metalloproteinase (MMP), enzymes that selectively destroy peptide bonds and structural proteins such as collagen and cartilage.