Largest subunit (Rpc1) of Eukaryotic RNA polymerase III (RNAP III), C-terminal domain
Eukaryotic RNA polymerase III (RNAP III) is a large multi-subunit complex responsible for the synthesis of tRNAs, 5SrRNA, Alu-RNA, U6 snRNA, among others. Rpc1 is also known as C160 in yeast. Structure studies suggest that different RNA polymerase complexes share a similar crab-claw-shape structure. The C-terminal domain of Rpb1, the largest subunit of RNAP II, makes up part of the foot and jaw structures of RNAP II. The similarity between this domain and the C-terminal domain of Rpb1, its counterpart in RNAP II, suggests a similar functional and structural role.