Peptide bond
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Peptide bond
A peptide bond is a chemical bond formed between two molecules when the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water (H2O).
peptide bond
[Gk. pepto, to soften, digest]
The covalent bond between two amino acid units, formed by condensation synthesis.
peptidoglycan ...
peptide bond A covalent bond that links two amino acids together to form a polypeptide chain. A covalent bond between the amine end of one amino acid and the acid end of another amino acid. PICTURE
peptides Short chains of amino acids.
Peptide Bond a bond‚ formed by dehydration synthesis‚ between the amino group of one amino acid and the carboxylic acid group of another amino acid
(pepti = digested‚ cooked) ...
Peptide bond A covalent linkage formed between the α-carboxyl group of one amino acid and the α- amino group of another. Also known as an amide bond.
Peptide Two or more amino acids joined by peptide bonds.
Peptide bond
- A covalent bond formed between the amino group of one amino acid and the COOH group of another, with the elimination of water
Perennial Ryegrass ...
peptide bond. A bond that binds amino acids together into a polypeptide chain, formed by removing an OH from the carboxyl group of one amino acid and an H from the amino group of another to form an amide group _CO_NH_.
Pepsin cleaves peptide bonds, favoring those on the C-terminal side of tyrosine, phenylalanine, and tryptophan residues. Its action breaks long polypeptide chains into shorter lengths.
A polymer composed of multiple amino acid units linked by peptide bonds. Polyploid. A multiple of the haploid chromosome number that results from chromosome replication without nuclear division. Polysaccharide.
The sequence of amino acids is called its primary structure (the bonds between the amino acids are called peptide bonds) and the sequence is determined by the genetic code.
Every protein is made up of one or more polypeptide chains, each a series of (typically) several hundred molecules known as amino acids, linked by so-called peptide bonds.
A long chain of amino acids joined by peptide bonds. Cf. peptide.
Related Terms:
Amino acid
Any of a class of 20 molecules that are combined to form proteins in living things.
When proline is in a peptide bond, it does not have a hydrogen on the α amino group, so it cannot donate a hydrogen bond to stabilize an α helix or a β sheet.
Two or more amino acids joined by a peptide bond.
Ribosome
The term proposed by Roberts (1958)for the small cellular components (Gk. soma, body) composed of specialized ribosomal RNA and protein (ribonucleoprotein); site of protein synthesis.
The oxygen or nitrogen atoms of the peptide bond are capable of hydrogen- bonding with hydrogen atoms elsewhere on the molecule. This bonding produces two common kinds of shapes seen in protein molecules, coils (helices) and pleated sheets.
New tRNAs bring their amino acids to the open binding site on the ribosome/mRNA complex, forming a peptide bond between the amino acids. The complex then shifts along the mRNA to the next triplet, opening the A site. The new tRNA enters at the A site.
Protease. An enzyme that cleaves peptide bonds that link amino acids in protein molecules.
Protein. A polymer of amino acids linked via peptide bonds and which may be composed of two or more polypeptide chains. (See Polypeptide.) ...
Schulze-Kremer's GA used real-valued numbers to represent the so-called "torsion angles" between the peptide bonds that connect amino acids.
A molecule composed of polymers of amino acids joined together by peptide bonds. It can be distinguished from fats and carbohydrates by containing nitrogen. Other components include carbon, hydrogen, oxygen, sulphur, and sometimes phosphorus.
a chain of covalently linked amino acids joined by peptide bonds
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row
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N- or C-terminal The amino acids which form polypeptides are joined by peptide bonds between the amino group of one amino acid and the carboxy group of the next.
Polypeptide chain The chain of aminoacids joined by peptide bonds which is the primary product of the translation of the mRNA of a gene.
Polyploid Having more than the normal two haploid sets of chromosomes.
proteases - enzymes, such as trypsin, that degrades proteins by hydrolyzing some of their peptide bonds.
protein kinases - Enzyme that transfers the terminal phosphate group of ATP to a specific amino acid of a target protein ...
Two or more amino acids joined by a bond called a "peptide bond."
See also: polypeptide
Phage
A virus for which the natural host is a bacterial cell.
Intein
Selfish DNA elements located within coding regions that are translated with the interrupted protein, but then catalyze their own excision and the formation of a peptide bond between the flanking protein regions.
There are 20 amino acids in nature from which all proteins are built. Polymers constructed by two or more amino acids, joined by peptide bonds, are called polypeptides.
a-helix: Common secondary 3-dimensional structure of proteins in which the linear sequence of amino acids is folded into a spiral that is stabilized by hydrogen bonds between the carboxyl oxygen of each peptide bond.
 See also: Peptide, Protein, Proteins, Acids, Amino acid
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