Noun
English Wikipedia has an article on:thiolWikipedia
thiol (plural thiols)
(organic chemistry) A univalent organic radical (-SH) containing a sulphur and a hydrogen atom; a compound containing such a radical.
Excluding the few exceptions where methionine may act as a redox sensor (e.g. citation ), methionine residues do not have a catalytic role. citation This is in contrast to cysteine residues, where the thiol group has a catalytic role in many proteins. Source: Internet
Nitric oxide is bound to specific thiol groups in the globin protein to form an S-nitrosothiol, which dissociates into free nitric oxide and thiol again, as the hemoglobin releases oxygen from its heme site. Source: Internet
In the thiol-yne reaction the substrate is a thiol. Source: Internet
The enzyme O-acetylserine (thiol)-lyase, using sulfide sources, converts this ester into cysteine, releasing acetate. citation Biological functions The cysteine thiol group is nucleophilic and easily oxidized. Source: Internet