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Component of RNA polymerase I core factor complex that acts as a GTF2B/TFIIB-like factor and plays a key role in multiple steps during trancription initiation such as preinitiation complex (PIC) assembly and postpolymerase recruitment events in polymerase I (Pol I) transcription. Binds rDNA promoters and plays a role in Pol I recruitment as a component of the SL1/TIF-IB complex and, possibly, directly through its interaction with RRN3.
4930408G01Rik; A230108M10Rik; MGC:9349; p63; RAF1B; RAFI63; RNA polymerase I-specific TBP-associated factor 63 kDa; RNA polymerase I-specific TBP-associated factor 68 kDa; SL1; SL1, 63kD subunit; Taf1b; TAFI63; TAFI68; Tafi86; TATA box binding protein (Tbp)-associated factor, RNA polymerase I, B; TATA box binding protein (TBP)-associated factor, RNA polymerase I, B, 63kD; TATA box binding protein (TBP)-associated factor, RNA polymerase I, B, 63kDa; TATA box binding protein associated factor 1B; TATA box-binding protein-associated factor 1B; TATA box-binding protein-associated factor RNA polymerase I subunit B; TATA-box binding protein associated factor, RNA polymerase I subunit B; TATA-box binding protein associated factor, RNA polymerase I, B; TBP-associated factor 1B; TBP-associated factor RNA polymerase I 68; transcription factor TAFI68; transcription initiation factor SL1/TIF-IB subunit B
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