A complex that is capable of kinase activity directed towards the C-terminal Domain (CTD) of the largest subunit of RNA polymerase II and is essential for initiation at RNA polymerase II promoters in vitro. It is composed of the core TFIIH complex and the TFIIK complex. (Gene Ontology, GO_0005675)
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10 proteins localized to the holo tfiih complex cellular component from the COMPARTMENTS Curated Protein Localization Evidence Scores dataset.