5wqk

Structural highlights

Function

THTM_MOUSE 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.^{[1] [2] [3] [4]}

See Also

• Sulfurtransferase

References

1. ↑ Shibuya N, Tanaka M, Yoshida M, Ogasawara Y, Togawa T, Ishii K, Kimura H. 3-Mercaptopyruvate sulfurtransferase produces hydrogen sulfide and bound sulfane sulfur in the brain. Antioxid Redox Signal. 2009 Apr;11(4):703-14. PMID:18855522 doi:10.1089/ars.2008.2253
2. ↑ Mikami Y, Shibuya N, Kimura Y, Nagahara N, Yamada M, Kimura H. Hydrogen sulfide protects the retina from light-induced degeneration by the modulation of Ca2+ influx. J Biol Chem. 2011 Nov 11;286(45):39379-86. PMID:21937432 doi:10.1074/jbc.M111.298208
3. ↑ Mikami Y, Kimura H. A mechanism of retinal protection from light-induced degeneration by hydrogen sulfide. Commun Integr Biol. 2012 Mar 1;5(2):169-71. PMID:22808324 doi:10.4161/cib.18679
4. ↑ Hanaoka K, Sasakura K, Suwanai Y, Toma-Fukai S, Shimamoto K, Takano Y, Shibuya N, Terai T, Komatsu T, Ueno T, Ogasawara Y, Tsuchiya Y, Watanabe Y, Kimura H, Wang C, Uchiyama M, Kojima H, Okabe T, Urano Y, Shimizu T, Nagano T. Discovery and Mechanistic Characterization of Selective Inhibitors of H2S-producing Enzyme: 3-Mercaptopyruvate Sulfurtransferase (3MST) Targeting Active-site Cysteine Persulfide. Sci Rep. 2017 Jan 12;7:40227. doi: 10.1038/srep40227. PMID:28079151 doi:http://dx.doi.org/10.1038/srep40227
5. ↑ Hanaoka K, Sasakura K, Suwanai Y, Toma-Fukai S, Shimamoto K, Takano Y, Shibuya N, Terai T, Komatsu T, Ueno T, Ogasawara Y, Tsuchiya Y, Watanabe Y, Kimura H, Wang C, Uchiyama M, Kojima H, Okabe T, Urano Y, Shimizu T, Nagano T. Discovery and Mechanistic Characterization of Selective Inhibitors of H2S-producing Enzyme: 3-Mercaptopyruvate Sulfurtransferase (3MST) Targeting Active-site Cysteine Persulfide. Sci Rep. 2017 Jan 12;7:40227. doi: 10.1038/srep40227. PMID:28079151 doi:http://dx.doi.org/10.1038/srep40227