PUMA2 -- Evolutionary Analysis of Metabolism | |||
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EC-number: 4.2.1.20 ----- tryptophan synthase |
EC-NUMBER | 4.2.1.20 | |
ENZYME-NAME | tryptophan synthase | |
ENZYME-SYSNAME | A pyridoxal-phosphate protein. The alpha-subunit catalyses the conversion of 1-C-(indol-3-yl)glycerol 3-phosphate to indole and glyceraldehyde 3-phosphate. The indole then migrates to the beta-subunit where, with serine in the presence of pyridoxal 5''-phosphate, it is converted to tryptophan. Also catalyses the conversion of serine and indole into tryptophan and water, and of indoleglycerol phosphate into indole and glyceraldehyde phosphate (the latter reaction was listed formerly as EC 4.1.2.8). In some organisms, this enzyme is part of a multifunctional protein, together with one or more other components of the system for the biosynthesis of tryptophan [EC 2.4.2.18 (anthranilate phosphoribosyltransferase), EC 4.1.1.48 (indole-3-glycerol-phosphate synthase), EC 4.1.3.27 (anthranilate synthase) and EC 5.3.1.24 (phosphoribosylanthranilate isomerase)]. | |
ENZYME-CLASS | Lyases Carbon-oxygen lyases Hydro-lyases | |
SYNONYMS | L-tryptophan synthetase;; indoleglycerol phosphate aldolase;; tryptophan desmolase;; tryptophan synthase;; >>more synonyms | |
REACTION | L-serine + 1-C-(indol-3-yl)glycerol 3-phosphate = L-tryptophan + glyceraldehyde 3-phosphate [RN:R02722] | |
PATHWAY | EMP-PATHWAYS: Chorismate,_Glutamine--Tryptophan,_Glyceraldehyde_3-phosphate_Anabolism; >>more EMP pathways | |
KEGG-PATHWAYS: Phenylalanine, tyrosine and tryptophan biosynthesis; Two-component system - General; >>more KEGG pathways | ||
GO_TERM | GO:0004834:tryptophan synthase activity | |
ENZYME-COMMENT | L-serine hydro-lyase (adding indoleglycerol-phosphate) | |
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To perform phylogenetic analysis:
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