Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, D, G, J, M
PF20640Rrn6, helical bundle domain (Rrn6_HB)Rrn6, helical bundle domainThis is the helical bundle domain (also referred to as the headlock domain) from RNA polymerase I-specific transcription initiation factor Rrn6, a component of a multisubunit transcription factor essential for the initiation of rDNA transcription by ...This is the helical bundle domain (also referred to as the headlock domain) from RNA polymerase I-specific transcription initiation factor Rrn6, a component of a multisubunit transcription factor essential for the initiation of rDNA transcription by Pol I [1,2]. This is a helical domain found towards the C-terminal, adjacent the beta-propeller, that wraps around Rrn7 and is part of module II of the core factor (CF) [2]. The DNA-bound CF resembles a right hand in which the N-terminal regions of both Rrn11 and Rrn6 (the beta-propeller domain) constitutes the palm, the thumb is composed of the C-terminal of Rrn11 and the fingers and knuckles correspond to Rrn7 and the C-terminal half of Rrn6 (this domain), respectively [3].
Domain
A, D, G, J, M
PF20639RRN6, K-rich C-terminal domain (Rrn6_K-rich)RRN6, K-rich C-terminal domainThis is the C-terminal K-rich domain from RNA polymerase I-specific transcription initiation factor Rrn6 [1]. Rrn6 is a component of a multisubunit transcription factor essential for the initiation of rDNA transcription by Pol I [1,2].Domain
A, D, G, J, M
PF10214Rrn6, beta-propeller (Rrn6_beta-prop)Rrn6, beta-propeller- Repeat
B, E, H, K, N
PF20645Rrn7/TAF1B, C-terminal cyclin domain (Rrn7_cyclin_C)Rrn7/TAF1B, C-terminal cyclin domainRrn7 from yeast and its orthologue TATA box-binding protein-associated factor RNA polymerase I subunit B (TAF1B) from human, are TFIIB-like factors components of RNA polymerase I core factor complex. They contain two cyclin fold domains. In Rrn7 the ...Rrn7 from yeast and its orthologue TATA box-binding protein-associated factor RNA polymerase I subunit B (TAF1B) from human, are TFIIB-like factors components of RNA polymerase I core factor complex. They contain two cyclin fold domains. In Rrn7 the cyclin domains interact with both Rrn6 and Rrn11 and form the fingers of the core factor which resembles a right hand. N-terminal regions of both Rrn11 and Rrn6 compose the palm, the thumb is composed by the C-terminal of Rrn11 and the knuckles consist of the C-terminal half of Rrn6. This is the C-terminal cyclin domain of Rrn7 from yeast and the orthologues from animals and plants TAF1B [1,2].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, D, G, J, M
RNA polymerase I-specific transcription initiation factor RRN6
B, E, H, K, N
RNA polymerase I-specific transcription initiation factor RRN7
C, F, I, L, O
RNA polymerase I-specific transcription initiation factor RRN11