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Entry version 120 (12 Aug 2020)
Sequence version 1 (01 Jun 1998)
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Protein

DNA-directed RNA polymerase I subunit RPA2

Gene

Polr1b

Organism
Rattus norvegicus (Rat)
Status
Reviewed-Annotation score:

Annotation score:4 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Second largest core component of RNA polymerase I which synthesizes ribosomal RNA precursors. Proposed to contribute to the polymerase catalytic activity and forms the polymerase active center together with the largest subunit. Pol I is composed of mobile elements and RPA2 is part of the core element with the central large cleft and probably a clamp element that moves to open and close the cleft (By similarity).By similarity

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section specifies the position(s) and type(s) of zinc fingers within the protein.<p><a href='/help/zn_fing' target='_top'>More...</a></p>Zinc fingeri1070 – 1101C4-typeSequence analysisAdd BLAST32

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionNucleotidyltransferase, Transferase
Biological processTranscription
LigandMetal-binding, Zinc

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...
Reactomei
R-RNO-5250924, B-WICH complex positively regulates rRNA expression
R-RNO-73762, RNA Polymerase I Transcription Initiation
R-RNO-73772, RNA Polymerase I Promoter Escape
R-RNO-73863, RNA Polymerase I Transcription Termination

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
DNA-directed RNA polymerase I subunit RPA2 (EC:2.7.7.6)
Short name:
RNA polymerase I subunit 2
Alternative name(s):
A127
RPA135
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:Polr1b
Synonyms:Rpa2, Rpo1-2
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiRattus norvegicus (Rat)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri10116 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaMuridaeMurinaeRattus
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000002494 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">proteome</a> can consist of several components.<br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Unplaced

Organism-specific databases

Rat genome database

More...
RGDi
620822, Polr1b

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

Keywords - Cellular componenti

DNA-directed RNA polymerase, Nucleus

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00000480741 – 1135DNA-directed RNA polymerase I subunit RPA2Add BLAST1135

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei1051PhosphoserineBy similarity1

Keywords - PTMi

Phosphoprotein

Proteomic databases

jPOST - Japan Proteome Standard Repository/Database

More...
jPOSTi
O54888

PaxDb, a database of protein abundance averages across all three domains of life

More...
PaxDbi
O54888

PRoteomics IDEntifications database

More...
PRIDEi
O54888

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
O54888

Comprehensive resource for the study of protein post-translational modifications (PTMs) in human, mouse and rat.

More...
PhosphoSitePlusi
O54888

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Component of the RNA polymerase I (Pol I) complex consisting of at least 13 subunits.

By similarity

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
10116.ENSRNOP00000024882

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the RNA polymerase beta chain family.Curated

Zinc finger

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Zinc fingeri1070 – 1101C4-typeSequence analysisAdd BLAST32

Keywords - Domaini

Zinc-finger

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG0216, Eukaryota

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
O54888

KEGG Orthology (KO)

More...
KOi
K03002

Database of Orthologous Groups

More...
OrthoDBi
42570at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
O54888

Family and domain databases

Conserved Domains Database

More...
CDDi
cd00653, RNA_pol_B_RPB2, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
2.40.270.10, 1 hit
2.40.50.150, 1 hit
3.90.1110.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR015712, DNA-dir_RNA_pol_su2
IPR007120, DNA-dir_RNAP_su2_dom
IPR037033, DNA-dir_RNAP_su2_hyb_sf
IPR007121, RNA_pol_bsu_CS
IPR007644, RNA_pol_bsu_protrusion
IPR007642, RNA_pol_Rpb2_2
IPR037034, RNA_pol_Rpb2_2_sf
IPR007645, RNA_pol_Rpb2_3
IPR007641, RNA_pol_Rpb2_7
IPR014724, RNA_pol_RPB2_OB-fold

The PANTHER Classification System

More...
PANTHERi
PTHR20856, PTHR20856, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF04563, RNA_pol_Rpb2_1, 1 hit
PF04561, RNA_pol_Rpb2_2, 1 hit
PF04565, RNA_pol_Rpb2_3, 1 hit
PF00562, RNA_pol_Rpb2_6, 1 hit
PF04560, RNA_pol_Rpb2_7, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS01166, RNA_POL_BETA, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequence (1+)i

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

This entry has 1 described isoform and 1 potential isoform that is computationally mapped.Show allAlign All

O54888-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MDVDSRWRNL PSGPSLKHLT DPSYAVPPEQ QKAALQDLTR AHVDSFNYAV
60 70 80 90 100
LEGLSHAVQA IPPFEFAFKD ERISLTIVDA AISPPAVPKG TICKELNIYP
110 120 130 140 150
AECRGRRSTY RGKLTADISW AVNGVPKGII KQFLGXVPIM VKSKLCNLYN
160 170 180 190 200
LPPQVLIEHH EEAEEMGGYF IINGIEKVIR MLIMPRRNFP IAMIRPKWKS
210 220 230 240 250
RGLGYTQFGV SIHCVREEHS AVNMNLHYVE NGTVMLNFIY RKELFFLPLG
260 270 280 290 300
FALKALVSFS DYQIFQELIK GKEEDSFFKN SVSQMLRIVM EEGCHTQKQV
310 320 330 340 350
LDYLGERFRV KLSLPDWYPN AEAAEFLFNQ CICIHLKSNT DKFYLLCLMT
360 370 380 390 400
RKLFALARGE CMEDNPDSLV NQEVLTPGQL FLMFLKEKME NWLLSIKIAL
410 420 430 440 450
DKRAQKTNVS INNENLMKIF SMGTELTRPF EYLLATGNLR SKTGLGFMQD
460 470 480 490 500
SGLCVVADKL NFIRYLSHFR CVHRGADFAK MRTTTVRKLL PESWGFLCPV
510 520 530 540 550
HTPDGAPCGL LNHLTAVCEV VTKFVYTASI PALLCGLGVT PVDAAPCRPY
560 570 580 590 600
SDCYPVLLDG VMVGWVDKEL APEVADTLRR FKVLRERRCS SLDGGGPDSH
610 620 630 640 650
DRKAKPVPRA VPLHHSLQAG EACAEPGAGQ RRARWNYGAA LHEHCHLRGR
660 670 680 690 700
GFWWSFHTPG ALPSQPAEVI ANFIPFSDHN QSPRNMYQCQ MGKQTMGFPL
710 720 730 740 750
LTYQDRSDNK LYRLQTPQSP LVRPCMYDHY DMDNYPIGTN AIVAVISYTG
760 770 780 790 800
YDMEDAMIVN KASWERGFAH GSVYKSEFID LSEKFKQGDD SLVFGVKPGD
810 820 830 840 850
PRVMQKLDND GLPFIGAKLE FGDPYYGYLN LNTGEGFVVY YKSKENCVVD
860 870 880 890 900
NIKVCSNDTG SGKFKCVCVT VRVPRNPTIG DKFASRHGQK GILSRLWPAE
910 920 930 940 950
DMPFTESGMM PDILFNPHGF PSRMTIGMLI ESMAGKSAAL HGLCHDATPF
960 970 980 990 1000
IFSEENSALE YFGEMLKAAG YNFYGTERLY SGISGMELEA DIFIGVVYYQ
1010 1020 1030 1040 1050
RLRHMVSDKF QVRTTGARDK VTNQPIGGRN VQGGIRFGEM ERDALLAHGT
1060 1070 1080 1090 1100
SFLLHDRLFN CSDRSVAHVC VKCGSLLSPL LEKPPPSWSA MRNRKYNCTV
1110 1120 1130
CGRSDSIDTV SVPYVFRYFV AELAAMNIKV KLDVI
Length:1,135
Mass (Da):127,721
Last modified:June 1, 1998 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i0A46D3FE9079A3E3
GO

<p>In eukaryotic reference proteomes, unreviewed entries that are likely to belong to the same gene are computationally mapped, based on gene identifiers from Ensembl, EnsemblGenomes and model organism databases.<p><a href='/help/gene_centric_isoform_mapping' target='_top'>More...</a></p>Computationally mapped potential isoform sequencesi

There is 1 potential isoform mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
F1LM57F1LM57_RAT
DNA-directed RNA polymerase subunit...
Polr1b
1,134Annotation score:

Annotation score:2 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
AF025424 mRNA Translation: AAB94600.1

Protein sequence database of the Protein Information Resource

More...
PIRi
T42368

NCBI Reference Sequences

More...
RefSeqi
NP_113961.1, NM_031773.1

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
83582

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
rno:83582

UCSC genome browser

More...
UCSCi
RGD:620822, rat

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF025424 mRNA Translation: AAB94600.1
PIRiT42368
RefSeqiNP_113961.1, NM_031773.1

3D structure databases

Database of comparative protein structure models

More...
ModBasei
Search...

Protein-protein interaction databases

STRINGi10116.ENSRNOP00000024882

PTM databases

iPTMnetiO54888
PhosphoSitePlusiO54888

Proteomic databases

jPOSTiO54888
PaxDbiO54888
PRIDEiO54888

Genome annotation databases

GeneIDi83582
KEGGirno:83582
UCSCiRGD:620822, rat

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
84172
RGDi620822, Polr1b

Phylogenomic databases

eggNOGiKOG0216, Eukaryota
InParanoidiO54888
KOiK03002
OrthoDBi42570at2759
PhylomeDBiO54888

Enzyme and pathway databases

ReactomeiR-RNO-5250924, B-WICH complex positively regulates rRNA expression
R-RNO-73762, RNA Polymerase I Transcription Initiation
R-RNO-73772, RNA Polymerase I Promoter Escape
R-RNO-73863, RNA Polymerase I Transcription Termination

Miscellaneous databases

Protein Ontology

More...
PROi
PR:O54888

Family and domain databases

CDDicd00653, RNA_pol_B_RPB2, 1 hit
Gene3Di2.40.270.10, 1 hit
2.40.50.150, 1 hit
3.90.1110.10, 1 hit
InterProiView protein in InterPro
IPR015712, DNA-dir_RNA_pol_su2
IPR007120, DNA-dir_RNAP_su2_dom
IPR037033, DNA-dir_RNAP_su2_hyb_sf
IPR007121, RNA_pol_bsu_CS
IPR007644, RNA_pol_bsu_protrusion
IPR007642, RNA_pol_Rpb2_2
IPR037034, RNA_pol_Rpb2_2_sf
IPR007645, RNA_pol_Rpb2_3
IPR007641, RNA_pol_Rpb2_7
IPR014724, RNA_pol_RPB2_OB-fold
PANTHERiPTHR20856, PTHR20856, 1 hit
PfamiView protein in Pfam
PF04563, RNA_pol_Rpb2_1, 1 hit
PF04561, RNA_pol_Rpb2_2, 1 hit
PF04565, RNA_pol_Rpb2_3, 1 hit
PF00562, RNA_pol_Rpb2_6, 1 hit
PF04560, RNA_pol_Rpb2_7, 1 hit
PROSITEiView protein in PROSITE
PS01166, RNA_POL_BETA, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiRPA2_RAT
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: O54888
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: December 15, 1998
Last sequence update: June 1, 1998
Last modified: August 12, 2020
This is version 120 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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