1.14.20.12: 3-[(E)-2-isocyanoethenyl]-1H-indole synthase
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For detailed information about 3-[(E)-2-isocyanoethenyl]-1H-indole synthase, go to the full flat file.
Reaction
Synonyms
isnB
ECTree
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General Information
General Information on EC 1.14.20.12 - 3-[(E)-2-isocyanoethenyl]-1H-indole synthase
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physiological function
presence of isonitrile synthase IsnA and IsnB alone are sufficient to generate 3-[(E)-2-isocyanoethenyl]-1H-indole from L-Trp and ribulose 5-phosphate. The origin of the isocyanide carbon atom in 3-[(E)-2-isocyanoethenyl]-1H-indole is the C2 atom of ribulose 5-phosphate, or a tautomerically equivalent sugar
physiological function
presence of isonitrile synthase IsnA and IsnB is necessary and sufficient to generate 3-[(E)-2-isocyanoethenyl]-1H-indole from L-Trp and ribulose 5-phosphate. The isocyanide group in (2S)-3-(1H-indol-3-yl)-2-isocyanopropanoate is formed in a single enzymatic step on IsnA and the isocyanide-containing intermediate is oxidatively decarboxylated by IsnB to give 3-[(E)-2-isocyanoethenyl]-1H-indole. Both the nitrogen atoms in 3-[(E)-2-isocyanoethenyl]-1H-indole, including the isocyanide nitrogen atom, are derived from tryptophan