Hydroxymethylpyrimidine kinase/phosphomethylpyrimidine kinase (IPR004399)

Short name: HMP/HMP-P_kinase

Overlapping homologous superfamilies

Domain relationships


This entry represents a bifunctional enzyme, phosphomethylpyrimidine (HMP-P) kinase(EC: (HMP) kinase (EC:, the ThiD/J protein of thiamine biosynthesis. It catalyzes two consecutive phosphorylation reactions in the thiamine phosphate biosynthesis pathway, first phosphorylating HMP to HMP-P, and then HMP-P to HMP-PP [PMID: 10075431]. The protein is commonly observed within operons containing other thiamine biosynthesis genes. Numerous examples are fusion proteins with other thiamine-biosynthetic domains.

GO terms

Biological Process

GO:0009228 thiamine biosynthetic process

Molecular Function

GO:0008972 phosphomethylpyrimidine kinase activity

Cellular Component

No terms assigned in this category.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.