The Enzyme Database

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Accepted name: 3-[(E)-2-isocyanoethenyl]-1H-indole synthase
Reaction: (2S)-3-(1H-indol-3-yl)-2-isocyanopropanoate + 2-oxoglutarate + O2 = 3-[(E)-2-isocyanoethenyl]-1H-indole + succinate + 2 CO2 + H2O
Glossary: (2S)-3-(1H-indol-3-yl)-2-isocyanopropanoate = L-tryptophan isonitrile
Other name(s): isnB (gene name); L-tryptophan isonitrile desaturase/decarboxylase (3-[(E)-2-isocyanoethenyl]-1H-indole-forming)
Systematic name: (2S)-3-(1H-indol-3-yl)-2-isocyanopropanoate,2-oxoglutarate:oxygen oxidoreductase (decarboxylating, 3-[(E)-2-isocyanoethenyl]-1H-indole-forming)
Comments: The enzyme has been characterized from an unidentified soil bacterium. It catalyses an Fe2+, 2-oxoglutarate-dependent monooxygenation at C-3, which is followed by decarboxylation and dehydration, resulting in the generation of a trans C-C double bond. cf. EC, 3-[(Z)-2-isocyanoethenyl]-1H-indole synthase.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Brady, S.F. and Clardy, J. Cloning and heterologous expression of isocyanide biosynthetic genes from environmental DNA. Angew. Chem. Int. Ed. Engl. 44 (2005) 7063–7065. [PMID: 16206308]
2.  Chang, W.C., Sanyal, D., Huang, J.L., Ittiamornkul, K., Zhu, Q. and Liu, X. In vitro stepwise reconstitution of amino acid derived vinyl isocyanide biosynthesis: detection of an elusive intermediate. Org. Lett. 19 (2017) 1208–1211. [DOI] [PMID: 28212039]
[EC created 2018]

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