Type: | Family | Name: | Modification methylase HemK |
Description: | The gene hemK from Escherichia coliwas found to contribute to haem biosynthesis and originally suggested to be protoporphyrinogen oxidase []. Functional analysis of the nearest homologue in Saccharomyces cerevisiae, YNL063w, finds it is not protoporphyrinogen oxidase and sequence analysis suggests that HemK homologues have S-adenosyl-methionine-dependent methyltransferase activity []. Homologues are found, usually in a single copy, in nearly all completed genomes, but varying somewhat in apparent domain architecture. Both Escherichia coliand Haemophilus influenzaehave two members rather than one. The members from the Mycoplasmas have an additional C-terminal domain. | Short Name: | Modification_methylase_HemK |