Protomonas extorquens (biovar 2) Dataset NCBI Taxonomy Classification phylum Pseudomonadota class Alphaproteobacteria order Hyphomicrobiales family Methylobacteriaceae genus Methylorubrum species Methylorubrum rhodinum Name Homonyms Protomonas extorquens (biovar 3) Protomonas extorquens (biovar 2) Protomonas extorquens Protomonas extorquens (ex Bassalik 1913) Urakami and Komagata 1984