Predicted to enable RNA polymerase II general transcription initiation factor activity. Predicted to be involved in several processes, including G protein-coupled receptor internalization; nucleotide-excision repair; and transcription initiation at RNA polymerase II promoter. Predicted to be located in nuclear speck. Predicted to be part of core TFIIH complex portion of holo TFIIH complex and transcription factor TFIID complex. Orthologous to several human genes including GTF2H2C (GTF2H2 family member C); PARTICIPATES IN nucleotide excision repair pathway; RNA polymerase II transcription initiation pathway; INTERACTS WITH aflatoxin B1 (ortholog); arsane (ortholog); arsenic atom (ortholog).