Glucose-1-phosphate thymidylyltransferase (EC 2.7.7.24) is an enzyme that catalyzes the chemical reaction
The enzyme characterised from Pseudomonas aeruginosa and Streptococcus faecalis combines thymidine triphosphate and glucose 1-phosphate to give thymidine diphosphate glucose, with pyrophosphate (PPi) as a byproduct. The mechanism of the reaction has been studied in Escherichia coli, where it is part of the biosynthetic pathway to L-rhamnose.
Nomenclature This enzyme is a transferase, specifically one transferring phosphorus-containing nucleotide groups (nucleotidyltransferases). The systematic name of this enzyme class is dTTP:alpha-D-glucose-1-phosphate thymidylyltransferase. Other names in common use include:
glucose 1-phosphate thymidylyltransferase, dTDP-glucose synthase, dTDP-glucose pyrophosphorylase, thymidine diphosphoglucose pyrophosphorylase, thymidine diphosphate glucose pyrophosphorylase, and TDP-glucose pyrophosphorylase.
Structural studies As of late 2007, 19 structures have been solved for this class of enzymes, with PDB accession codes PDB: 1FXO, PDB: 1FZW, PDB: 1G0R, PDB: 1G1L, PDB: 1G23, PDB: 1G2V, PDB: 1G3L, PDB: 1H5R, PDB: 1H5S, PDB: 1H5T, PDB: 1IIM, PDB: 1IIN, PDB: 1LVW, PDB: 1MC3, PDB: 1MP3, PDB: 1MP4, PDB: 1MP5, PDB: 2GGO, and PDB: 2GGQ.
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