Disulfide bond
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Disulfide bond (-S-S-): A covalent linkage between two cysteine residues in different parts of a protein or between two different proteins.
Disulfide bonds are covalent bonds between sulfur atoms in the R groups of two different amino acids. These bonds are very important in maintaining the tertiary structure of some proteins.
Disulfide bond A covalent bond formed by the oxidation of two sulfhydryl groups; the oxidation of cysteine residues in a polypeptide yields a disulfide bond linking the two residues.
disulfide bond - covalent intrachain bonds found in protein molecules; covalent linking of two -SH groups of neighboring cysteine residues in a folded polypeptide chain. These bonds are rarely, if ever found in the cytosol.
disulfide bond A linkage between the sulfur atoms of two different amino acids in a protein.
diurnal Pertaining to daily cycles or events.An animal with an activity period during the light portion of the daily cycle.
For protein, this usually means the inclusion of 2-ME (which reduces disulfide bonds between cysteine residues) and SDS and/or urea in an acrylamide gel.
When cysteine 282 is lost, the disulfide bond cannot be formed and the HFE protein's alpha-3 domain is no longer able to complex with beta-2-microglobulin, which serves as a stabilization factor.
Disulfide bond formation and rearrangement. Disulfide bonds stabilize the tertiary and quaternary structure of many proteins.
Sarcoplasmic reticulum. The endoplasmic reticulum found in muscle fibers is called sarcoplasmic reticulum.
most abundant proteins in cobra (naja of the elapids) venom; basic polypeptides of 57 to 62 amino acids with four disulfide bonds and a molecular weight of less than 7000; causes skeletal and cardiac muscle contracture, ...
Cysteine can react with itself to form an oxidized dimer by formation of a disulfide bond.
a compound which when added to serum alters disulfide bonds on IgM antibodies ...
They contain several invariant cysteines that form disulfide bonds that assist in producing
a secondary structure that consists of a beta sheet.
This is referred to as tertiary structure (the bonds involved include hydrogen bonds, electrostatic bonds, Van der Waal's forces, and covalent disulfide bonds). As stated earlier, most functional proteins have more than one polypeptide chain.
 See also: Acids, Protein, Proteins, Amino acid, Amino acids
  
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