This family represents the RPC5 protein which is part of the RNA polymerase III complex [1-3].

1: Molecular structures of unbound and transcribing RNA polymerase III. Hoffmann NA, Jakobi AJ, Moreno-Morcillo M, Glatt S, Kosinski J, Hagen WJ, Sachse C, Muller CW; Nature. 2015;528:231-236. PMID:26605533

2: Structural visualization of RNA polymerase III transcription machineries. Han Y, Yan C, Fishbain S, Ivanov I, He Y; Cell Discov. 2018;4:40. PMID:30083386

3: Molecular mechanism of promoter opening by RNA polymerase III. Vorlander MK, Khatter H, Wetzel R, Hagen WJH, Muller CW; Nature. 2018;553:295-300. PMID:29345638