Ready-to-use ELISA kits are available for the detection of general transcription factor III C 1, an alias of the protein, general transcription factor IIIC subunit 1. The official gene symbol is GTF3C1. The protein, with a mass of 238.9 kDa and length of 2109 residues, is reported to be nuclear. It is a member of the TFIIIC subunit 1 family and may be known by other names, including: transcription factor IIIC 220 kDa subunit, general transcription factor IIIC polypeptide 1 alpha 220kDa, TFIIIC box B-binding subunit, TFIIIC 220 kDa subunit, TF3C-alpha, and general transcription factor 3C polypeptide 1, and TFIIIC.