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UniProtKB - Q5ZJR9 (TAF1B_CHICK)
Protein
TATA box-binding protein-associated factor RNA polymerase I subunit B
Gene
TAF1B
Organism
Gallus gallus (Chicken)
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 | 4 – 39 | RRN7-typeAdd BLAST | 36 |
GO - Molecular functioni
- DNA-binding transcription activator activity, RNA polymerase II-specific Source: GO_Central
- metal ion binding Source: UniProtKB-KW
- RNA polymerase I core promoter sequence-specific DNA binding Source: UniProtKB
- RNA polymerase II cis-regulatory region sequence-specific DNA binding Source: GO_Central
GO - Biological processi
- brain development Source: GO_Central
- neural tube development Source: GO_Central
- regulation of transcription by RNA polymerase II 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 |
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:RCJMB04_16d10 |
Organismi | Gallus gallus (Chicken) |
Taxonomic identifieri | 9031 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Archelosauria › Archosauria › Dinosauria › Saurischia › Theropoda › Coelurosauria › Aves › Neognathae › Galloanserae › Galliformes › Phasianidae › Phasianinae › Gallus |
Proteomesi |
|
PTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000416870 | 1 – 582 | TATA box-binding protein-associated factor RNA polymerase I subunit BAdd BLAST | 582 |
Proteomic databases
PaxDbi | Q5ZJR9 |
PRIDEi | Q5ZJR9 |
Expressioni
Gene expression databases
Bgeei | ENSGALG00000016437, Expressed in spermatid and 13 other tissues |
ExpressionAtlasi | Q5ZJR9, baseline and differential |
Structurei
Family & Domainsi
Region
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Regioni | 40 – 68 | B-readerBy similarityAdd BLAST | 29 | |
Regioni | 69 – 73 | B-linkerBy similarity | 5 | |
Regioni | 74 – 255 | N-terminal cyclin foldBy similarityAdd BLAST | 182 | |
Regioni | 256 – 366 | 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 | 4 – 39 | RRN7-typeAdd BLAST | 36 |
Keywords - Domaini
Zinc-fingerPhylogenomic databases
eggNOGi | ENOG502QVGU, Eukaryota |
GeneTreei | ENSGT00940000157612 |
HOGENOMi | CLU_032815_0_0_1 |
InParanoidi | Q5ZJR9 |
OrthoDBi | 329399at2759 |
Family and domain databases
InterProi | View protein in InterPro IPR021752, TF_Rrn7_Zf |
Pfami | View protein in Pfam PF11781, zf-RRN7, 1 hit |
(1+)i Sequence
Sequence statusi: Complete.
This entry has 1 described isoform and 4 potential isoforms that are computationally mapped.Show allAlign All
Q5ZJR9-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MDEEDAGDFN ERCAQCSEVN WGLTDGGRFY CRTCHNVIER TREVVSTDVI
60 70 80 90 100
PNARVQTISK GSRSQKKTDE GWEWYVCEGF QLVLKQQAEA LEALGVCPQM
110 120 130 140 150
KDEVLCNFWR RYLQKSQQAY CNRPAGETIK ALSVCDSSTD MDSEPEQHSL
160 170 180 190 200
LHFLSVSESD GDLQTDCSYA SSAGKVSEST SVCSGSVDGS LYVRKNRKEK
210 220 230 240 250
LRMSMPMTLS FCYMALLWLK EPMTLSDLLR FVVEGHIPYF NAYQHFPEKM
260 270 280 290 300
KLYGLDLRIF CVESWPVYEE VYNKMVELAA FLDLPRFPDI TDNCFLHPDV
310 320 330 340 350
LCMKYLMEAN LPDELHNWTC RLVKKTSIGE VDFLTLTPGN KSTRKVKYDV
360 370 380 390 400
LAAAVIVVVL KLLFLLDDHY EWLLSDFSAE GNKNNKEGEG GPYFEFKKWY
410 420 430 440 450
RVIKCTLDVE QKKLDEEKAK YLWKCEKPLF YSVKKKSKIL RRRQMVENLQ
460 470 480 490 500
IQFGKLSGSV QPAGRPNPSS FLLSWSEEST DGSCFHGHSL KGILQEKHGL
510 520 530 540 550
LTAINTDYWL CTDKLCNEKL CGHLAHYREE DFPKSYHFVL RLFSFLLRIQ
560 570 580
PSSIHEEVCV IEHKLFNKKL YKKPKRKRSL RK
Computationally mapped potential isoform sequencesi
There are 4 potential isoforms mapped to this entry.BLASTAlignShow allAdd to basketA0A1D5NZ26 | A0A1D5NZ26_CHICK | CP2 domain-containing protein | GRHL1 | 638 | Annotation score: | ||
A0A1L1RP65 | A0A1L1RP65_CHICK | TATA box-binding protein-associated... | GRHL1 | 557 | Annotation score: | ||
A0A1D5PX42 | A0A1D5PX42_CHICK | CP2 domain-containing protein | GRHL1 | 629 | Annotation score: | ||
A0A3Q2UKP8 | A0A3Q2UKP8_CHICK | CP2 domain-containing protein | GRHL1 | 582 | Annotation score: |
Experimental Info
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Sequence conflicti | 159 | S → I in CAG32024 (PubMed:15642098).Curated | 1 | |
Sequence conflicti | 451 | I → N in CAG32024 (PubMed:15642098).Curated | 1 | |
Sequence conflicti | 560 | V → A in CAG32024 (PubMed:15642098).Curated | 1 |
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AJ720365 mRNA Translation: CAG32024.1 AADN02018707 Genomic DNA No translation available. AADN02018708 Genomic DNA No translation available. |
RefSeqi | NP_001006416.1, NM_001006416.1 |
Genome annotation databases
Ensembli | ENSGALT00000026516; ENSGALP00000026465; ENSGALG00000038495 |
GeneIDi | 421933 |
KEGGi | gga:421933 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AJ720365 mRNA Translation: CAG32024.1 AADN02018707 Genomic DNA No translation available. AADN02018708 Genomic DNA No translation available. |
RefSeqi | NP_001006416.1, NM_001006416.1 |
3D structure databases
ModBasei | Search... |
SWISS-MODEL-Workspacei | Submit a new modelling project... |
Protein-protein interaction databases
STRINGi | 9031.ENSGALP00000026465 |
Proteomic databases
PaxDbi | Q5ZJR9 |
PRIDEi | Q5ZJR9 |
Genome annotation databases
Ensembli | ENSGALT00000026516; ENSGALP00000026465; ENSGALG00000038495 |
GeneIDi | 421933 |
KEGGi | gga:421933 |
Organism-specific databases
CTDi | 9014 |
Phylogenomic databases
eggNOGi | ENOG502QVGU, Eukaryota |
GeneTreei | ENSGT00940000157612 |
HOGENOMi | CLU_032815_0_0_1 |
InParanoidi | Q5ZJR9 |
OrthoDBi | 329399at2759 |
Miscellaneous databases
PROi | PR:Q5ZJR9 |
Gene expression databases
Bgeei | ENSGALG00000016437, Expressed in spermatid and 13 other tissues |
ExpressionAtlasi | Q5ZJR9, baseline and differential |
Family and domain databases
InterProi | View protein in InterPro IPR021752, TF_Rrn7_Zf |
Pfami | View protein in Pfam PF11781, zf-RRN7, 1 hit |
MobiDBi | Search... |
Entry informationi
Entry namei | TAF1B_CHICK | |
Accessioni | Q5ZJR9Primary (citable) accession number: Q5ZJR9 Secondary accession number(s): F1NKU3 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | April 18, 2012 |
Last sequence update: | April 18, 2012 | |
Last modified: | February 23, 2022 | |
This is version 83 of the entry and version 2 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