The Enzyme Database

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EC 1.14.20.11     
Accepted name: 3-[(Z)-2-isocyanoethenyl]-1H-indole synthase
Reaction: (2S)-3-(1H-indol-3-yl)-2-isocyanopropanoate + 2-oxoglutarate + O2 = 3-[(Z)-2-isocyanoethenyl]-1H-indole + succinate + 2 CO2 + H2O
For diagram of tryptophan isonitrile biosynthesis, click here
Glossary: (2S)-3-(1H-indol-3-yl)-2-isocyanopropanoate = L-tryptophan isonitrile
Other name(s): ambI3 (gene name); famH3 (gene name); L-tryptophan isonitrile desaturase/decarboxylase (3-[(Z)-2-isocyanoethenyl]-1H-indole-forming)
Systematic name: (2S)-3-(1H-indol-3-yl)-2-isocyanopropanoate,2-oxoglutarate:oxygen oxidoreductase (decarboxylating, 3-[(Z)-2-isocyanoethenyl]-1H-indole-forming)
Comments: The enzyme, characterized from the cyanobacterium Fischerella ambigua UTEX 1903, participates in the biosynthesis of hapalindole-type alkaloids. The enzyme catalyses an Fe2+, 2-oxoglutarate-dependent monooxygenation at C-3, which is followed by decarboxylation and dehydration, resulting in the generation of a cis C-C double bond. cf. EC 1.14.20.12, 3-[(E)-2-isocyanoethenyl]-1H-indole synthase.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Hillwig, M.L., Zhu, Q. and Liu, X. Biosynthesis of ambiguine indole alkaloids in cyanobacterium Fischerella ambigua. ACS Chem. Biol. 9 (2014) 372–377. [DOI] [PMID: 24180436]
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 1.14.20.11 created 2018]
 
 


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