The x-ray analysis of the resulting compound showed that it was a bis complex [Zn(PDTC)2] existing in the dimeric form rather than a mixed thiolate
The metal- thiolate
complexes (with C-terminal domain of the a- and N-terminal chain in the [beta] chain); the green ovals represent the 20 cysteine residues bound to the sulfur compound (S) which binds divalent to zinc, three bonds to zinc of the [beta] chain and four to the a chain by adding seven divalent bonds.
All the complexes exhibit [g.sub.max] - [g.sub.min] values in the range of 0.143-0.18 and therefore it appears that all the four complexes have two thiolate
S-atoms possibly in the cis-geometry .
anion is an intermediate in the formation of albumin-S-S-homocysteine.
Therefore, we argue that l-cysteine molecules do not interact via the carboxylate group whereas the shifts in signals provide a hint to the surface interactions due to the -S group via thiolate
Thio-Ligation to Vanadium: The NSSN and SN'O Donor Sets (N = Pyridine, N = Enamine; S= Thioether, S = Thiolate
Hydrolysis rates were measured at 415 nm for 3 min with 30 s intervals, monitored by the formation of the thiolate
dianion of DTNB.
The phytochelatines trap the xenobiotique one and/ or metal in association with a group HS (sulfhydrile), it is formed a complex thiolate
metal which becomes immediately inactive.
The hydrolysis was monitored by the formation of thiolate
dianion of DTNB at 412 nm for 2-3 minutes (intervals of 30 s).
This reaction involves a compound with an electrophilic atom and GST facilitates the nucleophilic attack of glutathione thiolate
on this electron deficient atom of the hydrophobic compound.
These special nanoparticles are actually clusters of less than 200 gold atoms (about 1 nanometer in diameter) with precisely controlled composition and coated with a thin layer of molecules called thiolate
. Using four beamlines at the CLS, Zhang's group have been able to get a detailed picture of their structure that conventional characterization techniques can hardly provide.