This family includes prokaryotic proteins of unknown function, as well as a protein annotated as the pit accessory protein from Sinorhizobium meliloti Swiss:O30498. However, the function of this protein is also unknown (Pit stands for Phosphate transport). It is probably distantly related to Pfam:PF01895 (personal obs:Yeats C).

1: Second site mutations specifically suppress the Fix- phenotype of Rhizobium meliloti ndvF mutations on alfalfa: identification of a conditional ndvF-dependent mucoid colony phenotype. Oresnik IJ, Charles TC, Finan TM; Genetics 1994;136:1233-1243. PMID:8013901