<p>These are a subfamily of a large family of polyprenyltransferases that also includes 4-hydroxybenzoate octaprenyltransferase and protoheme IX farnesyltransferase (heme O synthase). Members of this family are found exclusively in photosynthetic organisms, including a single copy in <taxon tax_id="3702">Arabidopsis thaliana</taxon>(Mouse-ear cress).</p> Bacteriochlorophyll/chlorophyll synthetase