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Taf3 | Transcription initiation factor TFIID subunit 3; Transcription factor TFIID is one of the general factors required for accurate and regulated initiation by RNA polymerase II. TFIID is a multimeric protein complex that plays a central role in mediating promoter responses to various activators and repressors. Required in complex with TBPL2 for the differentiation of myoblasts into myocytes. The complex replaces TFIID at specific promoters at an early stage in the differentiation process. Belongs to the TAF3 family. (932 aa) | ||||
Crem | cAMP-responsive element modulator; Transcriptional regulator that binds the cAMP response element (CRE), a sequence present in many viral and cellular promoters. Isoforms are either transcriptional activators or repressors. Isoform 2, isoform 3 and isoform 4 are repressors, while isoform 1 is an activator. Plays a role in spermatogenesis and is involved in spermatid maturation. Binding of isoform 1 (activator) to CRE is increased by CREB3L4. The CREM isoform 1-CREB3L4 heterodimer functions through CRE and may recruit HIRA to CRE to regulate histone exchange ; Belongs to the bZIP family. (357 aa) |