Search results
Results From The WOW.Com Content Network
The structure of a disulfide bond can be described by its χ ss dihedral angle between the C β −S γ −S γ −C β atoms, which is usually close to ±90°. The disulfide bond stabilizes the folded form of a protein in several ways: It holds two portions of the protein together, biasing the protein towards the folded topology.
Molar mass: 220.31 g·mol −1 Melting point: 56 to 58 °C (133 to 136 °F; 329 to 331 K) ... for example to oxidise free thiols to form disulfide bonds in proteins ...
Although the first phosphorus compounds observed to act as cholinesterase inhibitors were organophosphates, [85] the vast majority of nerve agents are instead phosphonates containing a P-C bond. Only a handful of organophosphate nerve agents were developed between the 1930s and 1960s, including diisopropylfluorophosphate , VG and NPF .
DTT is a reducing agent; once oxidized, it forms a stable six-membered ring with an internal disulfide bond. It has a redox potential of −0.33 V at pH 7. [1] The reduction of a typical disulfide bond proceeds by two sequential thiol-disulfide exchange reactions and is illustrated below.
Since orthophosphoric acid has three −OH groups, it can esterify with one, two, or three alcohol molecules to form a mono-, di-, or triester. See the general structure image of an ortho- (or mono-) phosphate ester below on the left, where any of the R groups can be a hydrogen or an organic radical. Di- and tripoly- (or tri-) phosphate esters ...
DsbC and DsbG facilitate the proper folding of the protein by breaking non-native disulfide bonds. In addition to this, DsbC also shows chaperone activity. [1] [3] The reduced cysteine on DsbC performs a nucleophilic attack on the target non-native disulfide bond, to form an unstable disulfide bond between DsbC and the protein. Another thiolate ...
In organosulfur chemistry, thiosulfinate is a functional group consisting of the linkage R-S(O)-S-R (R are organic substituents). Thiolsulfinates are also named as alkanethiosulfinic (or arenethiosulfinic) acid esters. They are the first of the series of functional groups containing an oxidized disulfide bond.
In industrial and environmental chemistry, an organophosphorus compound need contain only an organic substituent, but need not have a direct phosphorus-carbon (P-C) bond. [citation needed] Thus a large proportion of pesticides (e.g., malathion), are often included in this class of compounds.