In humans there are six subunits of transcription factor IIIC, and this one is the 90 kDa subunit; whereas in fungi the complex resolves into nine different subunits and this is No. 9 in yeasts [1]. The whole subunit is involved in RNA polymerase III-mediated transcription. It is possible that this N-terminal domain interacts with TFIIIC subunit 8 [2].

1: The TFIIIC90 subunit of TFIIIC interacts with multiple components of the RNA polymerase III machinery and contains a histone-specific acetyltransferase activity. Hsieh YJ, Kundu TK, Wang Z, Kovelman R, Roeder RG; Mol Cell Biol. 1999;19:7697-7704. PMID:10523658

2: Comparison of the RNA polymerase III transcription machinery in Schizosaccharomyces pombe, Saccharomyces cerevisiae and human. Huang Y, Maraia RJ; Nucleic Acids Res. 2001;29:2675-2690. PMID:11433012