We will be switching to the new UniProt website soon. Please explore and share your feedback.
Take me to the new website.
UniProtKB - F1R3W0 (TAF1B_DANRE)
Protein
TATA box-binding protein-associated factor RNA polymerase I subunit B
Gene
taf1b
Organism
Danio rerio (Zebrafish) (Brachydanio rerio)
Status
Functioni
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 transcription initiation such as pre-initiation complex (PIC) assembly and postpolymerase recruitment events in polymerase I (Pol I) transcription. Binds rDNA promoters and plays a role in Pol I recruitment (By similarity).
By similaritySites
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Metal bindingi | 13 | ZincBy similarity | 1 | |
Metal bindingi | 16 | ZincBy similarity | 1 | |
Metal bindingi | 31 | ZincBy similarity | 1 | |
Metal bindingi | 34 | ZincBy similarity | 1 |
Regions
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Zinc fingeri | 6 – 39 | RRN7-typeAdd BLAST | 34 |
GO - Molecular functioni
- metal ion binding Source: UniProtKB-KW
- RNA polymerase I core promoter sequence-specific DNA binding Source: UniProtKB
GO - Biological processi
- nucleolar large rRNA transcription by RNA polymerase I Source: GO_Central
- RNA polymerase I preinitiation complex assembly Source: UniProtKB
Keywordsi
Molecular function | DNA-binding |
Biological process | Transcription, Transcription regulation |
Ligand | Metal-binding, Zinc |
Enzyme and pathway databases
Reactomei | R-DRE-5250924, B-WICH complex positively regulates rRNA expression R-DRE-73762, RNA Polymerase I Transcription Initiation R-DRE-73772, RNA Polymerase I Promoter Escape R-DRE-73863, RNA Polymerase I Transcription Termination |
Names & Taxonomyi
Protein namesi | Recommended name: TATA box-binding protein-associated factor RNA polymerase I subunit BAlternative name(s): RNA polymerase I-specific TBP-associated factor 63 kDa Short name: TAFI63 TATA box-binding protein-associated factor 1B Short name: TBP-associated factor 1B |
Gene namesi | Name:taf1b ORF Names:si:dkey-81b15.4 |
Organismi | Danio rerio (Zebrafish) (Brachydanio rerio) |
Taxonomic identifieri | 7955 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Actinopterygii › Neopterygii › Teleostei › Ostariophysi › Cypriniformes › Danionidae › Danioninae › Danio |
Proteomesi |
|
Organism-specific databases
ZFINi | ZDB-GENE-041008-2, taf1b |
Subcellular locationi
Nucleus
- nucleolus By similarity
Nucleus
- RNA polymerase I core factor complex Source: GO_Central
- RNA polymerase transcription factor SL1 complex Source: GO_Central
Keywords - Cellular componenti
NucleusPTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000416871 | 1 – 576 | TATA box-binding protein-associated factor RNA polymerase I subunit BAdd BLAST | 576 |
Proteomic databases
PaxDbi | F1R3W0 |
Expressioni
Gene expression databases
Bgeei | ENSDARG00000028937, Expressed in head and 25 other tissues |
ExpressionAtlasi | F1R3W0, baseline |
Structurei
Family & Domainsi
Region
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Regioni | 40 – 70 | B-readerBy similarityAdd BLAST | 31 | |
Regioni | 71 – 73 | B-linkerBy similarity | 3 | |
Regioni | 74 – 246 | N-terminal cyclin foldBy similarityAdd BLAST | 173 | |
Regioni | 137 – 157 | DisorderedSequence analysisAdd BLAST | 21 | |
Regioni | 247 – 357 | C-terminal cyclin foldBy similarityAdd BLAST | 111 |
Domaini
Although it shares weak sequence similarity with GTF2B/TFIIB, displays a similar subdomain organization as GTF2B/TFIIB, with a N-terminal zinc finger, a connecting region (composed of B-reader and B-linker regions), followed by 2 cyclin folds. The RRN7-type zinc finger plays an essential postrecruitment role in Pol I transcription at a step preceding synthesis of the first 40 nucleotides (By similarity).By similarity
Sequence similaritiesi
Belongs to the RRN7/TAF1B family.Curated
Zinc finger
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Zinc fingeri | 6 – 39 | RRN7-typeAdd BLAST | 34 |
Keywords - Domaini
Zinc-fingerPhylogenomic databases
eggNOGi | ENOG502QVGU, Eukaryota |
GeneTreei | ENSGT00440000033827 |
InParanoidi | F1R3W0 |
OMAi | PRSFVWL |
PhylomeDBi | F1R3W0 |
TreeFami | TF324353 |
Family and domain databases
InterProi | View protein in InterPro IPR033599, TAF1B/Rrn7 IPR021752, TF_Rrn7_Zf |
PANTHERi | PTHR31576, PTHR31576, 1 hit |
Pfami | View protein in Pfam PF11781, zf-RRN7, 1 hit |
(1+)i Sequence
Sequence statusi: Complete.
This entry has 1 described isoform and 1 potential isoform that is computationally mapped.Show allAlign All
F1R3W0-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MDEQITGGYS EPCGQCAAVD WGVSDEGQFF CKSCHNVIEK IREVEDVTSL
60 70 80 90 100
HHKHGRISIV RKPKKKKHDS EREWLVCEGF QFILKHQAKA LVSLGVCMKF
110 120 130 140 150
ETEVLWNFWK RYLQNTRQAF TENPVSTARF EVFMKSQSGS ESDTQSHQSC
160 170 180 190 200
YSEASSDTEM SVSGISVDGR SAVSSESLHS IPQKGRRGRV SNLMSMPRTL
210 220 230 240 250
AMCYLALLWV REAITLTDLL RMVAEGHIPY LHLHETFPAE MRMFGKDVQI
260 270 280 290 300
FRVLFFPSYA FIKKEALVLA KIMKLPSFPT ISQDCLFHPV PLTVRYLLEA
310 320 330 340 350
NLPDALHVWV QKVITGAGMD SDSFLTFDPT DKKPHLLSYD VQAVAVIIVA
360 370 380 390 400
MKLLFKLDDH VEWKLSHDAA KKKNNKVFSL ERWFNIVQPV LEQARLKEEQ
410 420 430 440 450
EEARRQWNFA NPFITNLKRK SLVLKKRRVT DHLQQRFQKF ADPAPEQSTS
460 470 480 490 500
TTNSHTSFRF SWGEEEGSDG PSMFNQNLDC TVKAKAVNGL ANQRYWHPEL
510 520 530 540 550
RICPENKCVS HFSKFEPSLP RMFVWVLDLF SFILGVLQSD VYEEVLNVER
560 570
RFLKKNYRLD SRLTSSHLKK KKGPIL
Computationally mapped potential isoform sequencesi
There is 1 potential isoform mapped to this entry.BLASTAlignShow allAdd to basketA0A0A0MPI2 | A0A0A0MPI2_DANRE | TATA box-binding protein-associated... | taf1b | 560 | Annotation score: |
Sequence cautioni
The sequence CAI21238 differs from that shown. Reason: Erroneous gene model prediction.Curated
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AY648789 mRNA Translation: AAT68107.1 BX248136 Genomic DNA Translation: CAI21238.1 Sequence problems. |
Genome annotation databases
Ensembli | ENSDART00000049224; ENSDARP00000049223; ENSDARG00000028937 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AY648789 mRNA Translation: AAT68107.1 BX248136 Genomic DNA Translation: CAI21238.1 Sequence problems. |
3D structure databases
ModBasei | Search... |
SWISS-MODEL-Workspacei | Submit a new modelling project... |
Protein-protein interaction databases
STRINGi | 7955.ENSDARP00000049223 |
Proteomic databases
PaxDbi | F1R3W0 |
Genome annotation databases
Ensembli | ENSDART00000049224; ENSDARP00000049223; ENSDARG00000028937 |
Organism-specific databases
ZFINi | ZDB-GENE-041008-2, taf1b |
Phylogenomic databases
eggNOGi | ENOG502QVGU, Eukaryota |
GeneTreei | ENSGT00440000033827 |
InParanoidi | F1R3W0 |
OMAi | PRSFVWL |
PhylomeDBi | F1R3W0 |
TreeFami | TF324353 |
Enzyme and pathway databases
Reactomei | R-DRE-5250924, B-WICH complex positively regulates rRNA expression R-DRE-73762, RNA Polymerase I Transcription Initiation R-DRE-73772, RNA Polymerase I Promoter Escape R-DRE-73863, RNA Polymerase I Transcription Termination |
Miscellaneous databases
PROi | PR:F1R3W0 |
Gene expression databases
Bgeei | ENSDARG00000028937, Expressed in head and 25 other tissues |
ExpressionAtlasi | F1R3W0, baseline |
Family and domain databases
InterProi | View protein in InterPro IPR033599, TAF1B/Rrn7 IPR021752, TF_Rrn7_Zf |
PANTHERi | PTHR31576, PTHR31576, 1 hit |
Pfami | View protein in Pfam PF11781, zf-RRN7, 1 hit |
MobiDBi | Search... |
Entry informationi
Entry namei | TAF1B_DANRE | |
Accessioni | F1R3W0Primary (citable) accession number: F1R3W0 Secondary accession number(s): Q5RIQ5, Q6DRH0 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | April 18, 2012 |
Last sequence update: | May 3, 2011 | |
Last modified: | September 29, 2021 | |
This is version 59 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Chordata Protein Annotation Program |
Miscellaneousi
Keywords - Technical termi
Reference proteomeDocuments
- SIMILARITY comments
Index of protein domains and families