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Protein

DNA-directed RNA polymerase II subunit RPB2

Gene

POLR2B

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

Functioni

DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Second largest component of RNA polymerase II which synthesizes mRNA precursors and many functional non-coding RNAs. Proposed to contribute to the polymerase catalytic activity and forms the polymerase active center together with the largest subunit. Pol II is the central component of the basal RNA polymerase II transcription machinery. It is composed of mobile elements that move relative to each other. RPB2 is part of the core element with the central large cleft, the clamp element that moves to open and close the cleft and the jaws that are thought to grab the incoming DNA template (By similarity).By similarity1 Publication

Miscellaneous

The binding of ribonucleoside triphosphate to the RNA polymerase II transcribing complex probably involves a two-step mechanism. The initial binding seems to occur at the entry (E) site and involves a magnesium ion coordinated by three conserved aspartate residues of the two largest RNA Pol II subunits (By similarity).By similarity

Catalytic activityi

Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1).

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi792Magnesium; shared with RPB1By similarity1
Metal bindingi1119ZincBy similarity1
Metal bindingi1122ZincBy similarity1
Metal bindingi1137ZincBy similarity1
Metal bindingi1140ZincBy similarity1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Zinc fingeri1119 – 1140C4-typeAdd BLAST22

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionNucleotidyltransferase, Transferase
Biological processTranscription
LigandMagnesium, Metal-binding, Zinc

Enzyme and pathway databases

ReactomeiR-HSA-112382 Formation of RNA Pol II elongation complex
R-HSA-113418 Formation of the Early Elongation Complex
R-HSA-167152 Formation of HIV elongation complex in the absence of HIV Tat
R-HSA-167158 Formation of the HIV-1 Early Elongation Complex
R-HSA-167160 RNA Pol II CTD phosphorylation and interaction with CE during HIV infection
R-HSA-167161 HIV Transcription Initiation
R-HSA-167162 RNA Polymerase II HIV Promoter Escape
R-HSA-167172 Transcription of the HIV genome
R-HSA-167200 Formation of HIV-1 elongation complex containing HIV-1 Tat
R-HSA-167238 Pausing and recovery of Tat-mediated HIV elongation
R-HSA-167242 Abortive elongation of HIV-1 transcript in the absence of Tat
R-HSA-167243 Tat-mediated HIV elongation arrest and recovery
R-HSA-167246 Tat-mediated elongation of the HIV-1 transcript
R-HSA-167287 HIV elongation arrest and recovery
R-HSA-167290 Pausing and recovery of HIV elongation
R-HSA-168325 Viral Messenger RNA Synthesis
R-HSA-203927 MicroRNA (miRNA) biogenesis
R-HSA-452723 Transcriptional regulation of pluripotent stem cells
R-HSA-5578749 Transcriptional regulation by small RNAs
R-HSA-5601884 PIWI-interacting RNA (piRNA) biogenesis
R-HSA-5617472 Activation of anterior HOX genes in hindbrain development during early embryogenesis
R-HSA-674695 RNA Polymerase II Pre-transcription Events
R-HSA-6781823 Formation of TC-NER Pre-Incision Complex
R-HSA-6781827 Transcription-Coupled Nucleotide Excision Repair (TC-NER)
R-HSA-6782135 Dual incision in TC-NER
R-HSA-6782210 Gap-filling DNA repair synthesis and ligation in TC-NER
R-HSA-6796648 TP53 Regulates Transcription of DNA Repair Genes
R-HSA-6803529 FGFR2 alternative splicing
R-HSA-6807505 RNA polymerase II transcribes snRNA genes
R-HSA-72086 mRNA Capping
R-HSA-72163 mRNA Splicing - Major Pathway
R-HSA-72165 mRNA Splicing - Minor Pathway
R-HSA-72203 Processing of Capped Intron-Containing Pre-mRNA
R-HSA-73776 RNA Polymerase II Promoter Escape
R-HSA-73779 RNA Polymerase II Transcription Pre-Initiation And Promoter Opening
R-HSA-75953 RNA Polymerase II Transcription Initiation
R-HSA-75955 RNA Polymerase II Transcription Elongation
R-HSA-76042 RNA Polymerase II Transcription Initiation And Promoter Clearance
R-HSA-77075 RNA Pol II CTD phosphorylation and interaction with CE
R-HSA-8851708 Signaling by FGFR2 IIIa TM
R-HSA-9018519 Estrogen-dependent gene expression

Names & Taxonomyi

Protein namesi
Recommended name:
DNA-directed RNA polymerase II subunit RPB2 (EC:2.7.7.6)
Alternative name(s):
DNA-directed RNA polymerase II 140 kDa polypeptide
DNA-directed RNA polymerase II subunit B
RNA polymerase II subunit 2
RNA polymerase II subunit B2
Gene namesi
Name:POLR2B
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
Proteomesi
  • UP000005640 Componenti: Chromosome 4

Organism-specific databases

EuPathDBiHostDB:ENSG00000047315.14
HGNCiHGNC:9188 POLR2B
MIMi180661 gene
neXtProtiNX_P30876

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; Source: COMPARTMENTS

Keywords - Cellular componenti

DNA-directed RNA polymerase, Nucleus

Pathology & Biotechi

Organism-specific databases

DisGeNETi5431
OpenTargetsiENSG00000047315
PharmGKBiPA33508

Polymorphism and mutation databases

BioMutaiPOLR2B
DMDMi401012

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00000480851 – 1174DNA-directed RNA polymerase II subunit RPB2Add BLAST1174

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei937PhosphoserineCombined sources1
Modified residuei1052N6-methyllysineCombined sources1

Keywords - PTMi

Methylation, Phosphoprotein

Proteomic databases

EPDiP30876
MaxQBiP30876
PaxDbiP30876
PeptideAtlasiP30876
PRIDEiP30876
ProteomicsDBi54745

PTM databases

iPTMnetiP30876
PhosphoSitePlusiP30876

Expressioni

Gene expression databases

BgeeiENSG00000047315
CleanExiHS_POLR2B
ExpressionAtlasiP30876 baseline and differential
GenevisibleiP30876 HS

Organism-specific databases

HPAiHPA037506

Interactioni

Subunit structurei

Component of the RNA polymerase II (Pol II) complex consisting of 12 subunits. Interacts with WDR82. Interacts with MEN1.3 Publications

Protein-protein interaction databases

BioGridi111427, 122 interactors
CORUMiP30876
DIPiDIP-32910N
IntActiP30876, 34 interactors
MINTiP30876
STRINGi9606.ENSP00000312735

Structurei

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
5IY6electron microscopy7.20B1-1174[»]
5IY7electron microscopy8.60B1-1174[»]
5IY8electron microscopy7.90B1-1174[»]
5IY9electron microscopy6.30B1-1174[»]
5IYAelectron microscopy5.40B1-1174[»]
5IYBelectron microscopy3.90B1-1174[»]
5IYCelectron microscopy3.90B1-1174[»]
5IYDelectron microscopy3.90B1-1174[»]
ProteinModelPortaliP30876
SMRiP30876
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the RNA polymerase beta chain family.Curated

Zinc finger

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Zinc fingeri1119 – 1140C4-typeAdd BLAST22

Keywords - Domaini

Zinc-finger

Phylogenomic databases

eggNOGiKOG0214 Eukaryota
COG0085 LUCA
GeneTreeiENSGT00920000149102
HOGENOMiHOG000222962
HOVERGENiHBG017744
InParanoidiP30876
KOiK03010
OMAiKNLSLMC
OrthoDBiEOG091G00RQ
PhylomeDBiP30876
TreeFamiTF103037

Family and domain databases

CDDicd00653 RNA_pol_B_RPB2, 1 hit
Gene3Di2.40.270.10, 3 hits
2.40.50.150, 2 hits
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
IPR007646 RNA_pol_Rpb2_4
IPR007647 RNA_pol_Rpb2_5
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
PF04566 RNA_pol_Rpb2_4, 1 hit
PF04567 RNA_pol_Rpb2_5, 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

Sequencei

Sequence statusi: Complete.

P30876-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MYDADEDMQY DEDDDEITPD LWQEACWIVI SSYFDEKGLV RQQLDSFDEF
60 70 80 90 100
IQMSVQRIVE DAPPIDLQAE AQHASGEVEE PPRYLLKFEQ IYLSKPTHWE
110 120 130 140 150
RDGAPSPMMP NEARLRNLTY SAPLYVDITK TVIKEGEEQL QTQHQKTFIG
160 170 180 190 200
KIPIMLRSTY CLLNGLTDRD LCELNECPLD PGGYFIINGS EKVLIAQEKM
210 220 230 240 250
ATNTVYVFAK KDSKYAYTGE CRSCLENSSR PTSTIWVSML ARGGQGAKKS
260 270 280 290 300
AIGQRIVATL PYIKQEVPII IVFRALGFVS DRDILEHIIY DFEDPEMMEM
310 320 330 340 350
VKPSLDEAFV IQEQNVALNF IGSRGAKPGV TKEKRIKYAK EVLQKEMLPH
360 370 380 390 400
VGVSDFCETK KAYFLGYMVH RLLLAALGRR ELDDRDHYGN KRLDLAGPLL
410 420 430 440 450
AFLFRGMFKN LLKEVRIYAQ KFIDRGKDFN LELAIKTRII SDGLKYSLAT
460 470 480 490 500
GNWGDQKKAH QARAGVSQVL NRLTFASTLS HLRRLNSPIG RDGKLAKPRQ
510 520 530 540 550
LHNTLWGMVC PAETPEGHAV GLVKNLALMA YISVGSQPSP ILEFLEEWSM
560 570 580 590 600
ENLEEISPAA IADATKIFVN GCWVGIHKDP EQLMNTLRKL RRQMDIIVSE
610 620 630 640 650
VSMIRDIRER EIRIYTDAGR ICRPLLIVEK QKLLLKKRHI DQLKEREYNN
660 670 680 690 700
YSWQDLVASG VVEYIDTLEE ETVMLAMTPD DLQEKEVAYC STYTHCEIHP
710 720 730 740 750
SMILGVCASI IPFPDHNQSP RNTYQSAMGK QAMGVYITNF HVRMDTLAHV
760 770 780 790 800
LYYPQKPLVT TRSMEYLRFR ELPAGINSIV AIASYTGYNQ EDSVIMNRSA
810 820 830 840 850
VDRGFFRSVF YRSYKEQESK KGFDQEEVFE KPTRETCQGM RHAIYDKLDD
860 870 880 890 900
DGLIAPGVRV SGDDVIIGKT VTLPENEDEL ESTNRRYTKR DCSTFLRTSE
910 920 930 940 950
TGIVDQVMVT LNQEGYKFCK IRVRSVRIPQ IGDKFASRHG QKGTCGIQYR
960 970 980 990 1000
QEDMPFTCEG ITPDIIINPH AIPSRMTIGH LIECLQGKVS ANKGEIGDAT
1010 1020 1030 1040 1050
PFNDAVNVQK ISNLLSDYGY HLRGNEVLYN GFTGRKITSQ IFIGPTYYQR
1060 1070 1080 1090 1100
LKHMVDDKIH SRARGPIQIL NRQPMEGRSR DGGLRFGEME RDCQIAHGAA
1110 1120 1130 1140 1150
QFLRERLFEA SDPYQVHVCN LCGIMAIANT RTHTYECRGC RNKTQISLVR
1160 1170
MPYACKLLFQ ELMSMSIAPR MMSV
Length:1,174
Mass (Da):133,897
Last modified:July 1, 1993 - v1
Checksum:i32BEDF7F95E4DE10
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X63563 mRNA Translation: CAA45124.1
AK289823 mRNA Translation: BAF82512.1
CH471057 Genomic DNA Translation: EAX05519.1
BC023503 mRNA Translation: AAH23503.2
AF055028 mRNA Translation: AAC09367.1
CCDSiCCDS3511.1
PIRiS28976
RefSeqiNP_000929.1, NM_000938.2
NP_001290197.1, NM_001303268.1
NP_001290198.1, NM_001303269.1
UniGeneiHs.602757

Genome annotation databases

EnsembliENST00000314595; ENSP00000312735; ENSG00000047315
ENST00000381227; ENSP00000370625; ENSG00000047315
GeneIDi5431
KEGGihsa:5431
UCSCiuc003hcl.1 human

Similar proteinsi

Entry informationi

Entry nameiRPB2_HUMAN
AccessioniPrimary (citable) accession number: P30876
Secondary accession number(s): A8K1A8, Q8IZ61
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 1, 1993
Last sequence update: July 1, 1993
Last modified: June 20, 2018
This is version 186 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Reference proteome

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