4jgt
From Proteopedia
Contents |
Structure and kinetic analysis of H2S production by human Mercaptopyruvate Sulfurtransferase
Template:ABSTRACT PUBMED 23698001
Disease
[THTM_HUMAN] Encephalopathy due to beta-mercaptolactate-cysteine disulfiduria. Note=Aberrant MPST activity is found in a few cases of mercaptolactate-cysteine disulfiduria (MCDU) characterized by the appearance of large quantaties of the sulfur-containing amino acid, beta-mercaptolactate-cysteine disulfide, in the urine (PubMed:4973015, PubMed:4690911 and PubMed:6945862). Some cases have associated mental retardation (PubMed:4973015 and PubMed:6945862).
Function
[THTM_HUMAN] Transfer of a sulfur ion to cyanide or to other thiol compounds. Also has weak rhodanese activity. Detoxifies cyanide and is required for thiosulfate biosynthesis. Acts as an antioxidant. In combination with cysteine aminotransferase (CAT), contributes to the catabolism of cysteine and is an important producer of hydrogen sulfide in the brain, retina and vascular endothelial cells. Hydrogen sulfide H(2)S is an important synaptic modulator, signaling molecule, smooth muscle contractor and neuroprotectant. Its production by the 3MST/CAT pathway is regulated by calcium ions (By similarity).
About this Structure
4jgt is a 3 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
- Yadav PK, Yamada K, Chiku T, Koutmos M, Banerjee R. Structure and kinetic analysis of H2S production by human mercaptopyruvate sulfurtransferase. J Biol Chem. 2013 May 22. PMID:23698001 doi:10.1074/jbc.M113.466177
