disulfide bridge


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Related to disulfide bridge: Sulfur bridges

disulfide bridge

[dī¦səl‚fīd ′brij]
(organic chemistry)
A sulfur-to-sulfur bond linking the sulfur atoms of two polypeptide chains. Also known as disulfide bond.
References in periodicals archive ?
The following disulfide bridges were identified: intrachain [Cys(L23)-Cys(L88), Cys(L134) Cys(L194), Cys(H22)-Cys(H96), Cys (H146)-Cys(H202), Cys(H263)-Cys(H323), Cys(H369)-Cys(H427)] and interchain [Cys(L214)-Cys(H222), Cys(H228)-Cys(H228), Cys(H231)-Cys(H231)].
The first class contains 60-70 amino acids cross linked by four disulfide bridges (Gordon et al., 2003).
Most of the N- and C-terminal residues, the intramolecular disulfide bridge, and the amidated C-terminus are strongly conserved throughout the mammalian species (Figure 4).
Hair keratin forms an alpha helix shape from cysteine-cysteine disulfide bridges. Explain to the students why they cannot easily model this shape.
The first group contains 60-75 amino acids cross linked by four disulfide bridges and referred as Na+ channel long-chain toxin" (Goldin 2001; Gordon et al.
Obviously one disulfide bridge in the B chain can be open to a small extent.
One variant can be made to form a disulfide bridge, which increases resistance to denaturation.
The introduction of an interchain disulfide bridge remarkably alters the physicochemical properties of apolipoprotein A-I.
A previous study also showed that conserved disulfide bridges in avian-[beta]-defensin-12 are essential for the chemotactic property and maximum antimicrobial activity [27].
Thiols, which include a sulfhydryl (-SH) group, constitute one of the defense systems against unfavorable effects of ROS, and are the main target of ROS, being oxidized by oxidant molecules to form reversible disulfide bridges. These formed disulfide bridges may be reduced to thiol groups.