<p> This entry includes a variety of carbohydrate and pyrimidine kinases. The family includes phosphomethylpyrimidine kinase (<db_xref db="EC" dbkey="2.7.4.7"/>). This enzyme is part of the Thiamine pyrophosphate (TPP) synthesis pathway, TPP is an essential cofactor for many enzymes [<cite idref="PUB00005300"/>]. </p>