This is a family of proteins subunits of TFIIIC [1]. TFIIIC in yeast and humans is required for transcription of tRNA and 5 S RNA genes by RNA polymerase III. Yeast members of this family are fused to phosphoglycerate mutase domain.

1: Identification, molecular cloning, and characterization of the sixth subunit of human transcription factor TFIIIC. Dumay-Odelot H, Marck C, Durrieu-Gaillard S, Lefebvre O, Jourdain S, Prochazkova M, Pflieger A, Teichmann M; J Biol Chem. 2007;282:17179-17189. PMID:17409385