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Phosphoribosylanthranilate isomerase : ウィキペディア英語版 | Phosphoribosylanthranilate isomerase
In enzymology, a phosphoribosylanthranilate isomerase () is an enzyme that catalyzes the third step of the synthesis of the amino acid tryptophan. This enzyme participates in the phenylalanine, tyrosine and tryptophan biosynthesis pathway, also known as the aromatic amino acid biosynthesis pathway In yeast it is encoded by the ''TRP1'' gene.〔(【引用サイトリンク】title=TRP1/YDR007W Summary )〕 ==Reaction==
:N-(5-phospho-beta-D-ribosyl)anthranilate 1-(2-carboxyphenylamino)-1-deoxy-D-ribulose 5-phosphate In other words, this enzyme has one substrate, N-(5-phospho-beta-D-ribosyl)anthranilate, and one product, 1-(2-carboxyphenylamino)-1-deoxy-D-ribulose 5-phosphate. As the name phosphoribosylanthranilate isomerase suggests, it functions as an isomerase, rearranging the parts of the molecule without adding or removing molecules or atoms
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