Members of this family have several predicted transmembrane helices. One member of the family has been characterised as protein PGR (AtPGR). PGR is suggested to be a potential glucose-responsive regulator in carbohydrate metabolism in plants. This entry also includes protein VTE6, which is a Pphytyl-phosphate kinase catalysing the conversion of phytyl-monophosphate to phytyl-diphosphate [1].

1: Remobilization of Phytol from Chlorophyll Degradation Is Essential for Tocopherol Synthesis and Growth of Arabidopsis. Vom Dorp K, Holzl G, Plohmann C, Eisenhut M, Abraham M, Weber AP, Hanson AD, Dormann P; Plant Cell. 2015;27:2846-2859. PMID:26452599