Protein: RPAB3
DNA-directed RNA polymerases I, II, and III subunit RPABC3 (RNA polymerases I, II, and III subunit ABC3) (DNA-directed RNA polymerase II subunit H) (DNA-directed RNA polymerases I, II, and III 17.1 kDa polypeptide) (RPB17) (RPB8 homolog) (hRPB8)

Gene: RPAB3, POLR2H
Organism: Homo sapiens
Interactions: 197
UniProt ID: P52434

Gene Ontology (top 5):
GO:0003697 - single-stranded DNA binding
GO:0003899 - DNA-directed RNA polymerase activity
GO:0005634 - nucleus
GO:0005654 - nucleoplasm
GO:0005665 - RNA polymerase II, core complex

Download interactions: TXT   MITAB-2.5

Interaction Interactor Experiments Homologs Category Interaction
Score
Confidence

667226

RPB1
DNA-directed RNA polymerase II subunit RPB1

8

10

Small-scale

0.964

High

339960

RPA1
DNA-directed RNA polymerase I subunit RPA1

6

10

Small-scale

0.943

High

621601

RPB3
DNA-directed RNA polymerase II subunit RPB3

4

4

Small-scale

0.899

High

912036

RPB11
DNA-directed RNA polymerase II subunit RPB11-a

4

3

High-throughput

0.895

High

165024

RPC1
DNA-directed RNA polymerase III subunit RPC1

4

10

Small-scale

0.886

High

180257

RPAC1
DNA-directed RNA polymerases I and III subunit RPAC1

3

4

High-throughput

0.861

High

912046

RPB7
DNA-directed RNA polymerase II subunit RPB7

7

5

Small-scale

0.746

High

912048

RPAB5
DNA-directed RNA polymerases I, II, and III subunit RPABC5

5

1

Small-scale

0.714

High

912043

RPAB2
DNA-directed RNA polymerases I, II, and III subunit RPABC2

4

3

High-throughput

0.694

High

912161

RPC8
DNA-directed RNA polymerase III subunit RPC8

4

5

High-throughput

0.694

High

722917

RPB2
DNA-directed RNA polymerase II subunit RPB2

4

6

Small-scale

0.689

High

192797

RPB4
DNA-directed RNA polymerase II subunit RPB4

3

1

Small-scale

0.670

High

621840

RPAB1
DNA-directed RNA polymerases I, II, and III subunit RPABC1

3

1

Small-scale

0.670

High

912086

RPAP2
Putative RNA polymerase II subunit B1 CTD phosphatase RPAP2

3

1

High-throughput

0.667

High

912158

RPC10
DNA-directed RNA polymerase III subunit RPC10

3

5

High-throughput

0.667

High

912037

RPAB4
DNA-directed RNA polymerases I, II, and III subunit RPABC4

3

1

Small-scale

0.660

High

316368

RMP
Unconventional prefoldin RPB5 interactor 1

3

1

Small-scale

0.656

High

430616

RPC4
DNA-directed RNA polymerase III subunit RPC4

3

2

Small-scale

0.656

High

912138

RPC5
DNA-directed RNA polymerase III subunit RPC5

3

2

High-throughput

0.656

High

912139

RPC2
DNA-directed RNA polymerase III subunit RPC2

3

6

Small-scale

0.650

High

48929

MED19
Mediator of RNA polymerase II transcription subunit 19

3

0

High-throughput

0.638

High

335972

MED26
Mediator of RNA polymerase II transcription subunit 26

3

0

High-throughput

0.638

High

912142

PIHD1
PIH1 domain-containing protein 1

3

0

High-throughput

0.628

High

287444

RPC9
DNA-directed RNA polymerase III subunit RPC9

2

1

High-throughput

0.611

High

787733

RPB9
DNA-directed RNA polymerase II subunit RPB9

2

5

High-throughput

0.611

High

912050

TF2B
Transcription initiation factor IIB

2

3

High-throughput

0.611

High

912119

RPA49
DNA-directed RNA polymerase I subunit RPA49

2

1

High-throughput

0.611

High

912129

RPA2
DNA-directed RNA polymerase I subunit RPA2

2

6

High-throughput

0.611

High

912145

RPA12
DNA-directed RNA polymerase I subunit RPA12

2

5

High-throughput

0.611

High

912156

RUVB2
RuvB-like 2

2

2

High-throughput

0.611

High

912111

BARD1
BRCA1-associated RING domain protein 1

2

0

Small-scale

0.603

High

798878

BRCA1
Breast cancer type 1 susceptibility protein

2

1

Small-scale

0.602

High

912133

RPR1B
Regulation of nuclear pre-mRNA domain-containing protein 1B

2

4

High-throughput

0.601

High

912106

DAA10
Dynein axonemal assembly factor 10

3

1

High-throughput

0.599

High

912052

ERCC6
DNA excision repair protein ERCC-6

2

1

Small-scale

0.595

High

190858

RPA34
DNA-directed RNA polymerase I subunit RPA34

2

0

High-throughput

0.585

High

912070

INT3
Integrator complex subunit 3

2

0

High-throughput

0.585

High

912114

MED10
Mediator of RNA polymerase II transcription subunit 10

2

0

High-throughput

0.585

High

912125

RPAP3
RNA polymerase II-associated protein 3

2

0

High-throughput

0.585

High

912149

UXT
Protein UXT

2

0

High-throughput

0.585

High

912152

PFD2
Prefoldin subunit 2

2

0

High-throughput

0.585

High

259662

BRD4
Bromodomain-containing protein 4

2

1

Small-scale

0.584

High

371527

MYC
Myc proto-oncogene protein

2

1

High-throughput

0.584

High

516828

RPAC2
DNA-directed RNA polymerases I and III subunit RPAC2

1

3

High-throughput

0.575

High

395733

ESR1
Estrogen receptor

2

2

High-throughput

0.571

High

912140

MED9
Mediator of RNA polymerase II transcription subunit 9

2

0

High-throughput

0.559

High

186366

RPC7
DNA-directed RNA polymerase III subunit RPC7

1

1

High-throughput

0.536

High

625258

CSK22
Casein kinase II subunit alpha'

1

1

High-throughput

0.536

High

912049

CSK21
Casein kinase II subunit alpha

1

1

High-throughput

0.536

High

912057

KGP1
cGMP-dependent protein kinase 1

1

2

High-throughput

0.536

High

912078

SPT6H
Transcription elongation factor SPT6

1

1

High-throughput

0.536

High

912097

TF3B
Transcription factor IIIB 90 kDa subunit

1

3

High-throughput

0.536

High

912107

RPR1A
Regulation of nuclear pre-mRNA domain-containing protein 1A

1

4

High-throughput

0.536

High

912113

RPC7L
DNA-directed RNA polymerase III subunit RPC7-like

1

1

High-throughput

0.536

High

912116

RPC3
DNA-directed RNA polymerase III subunit RPC3

1

1

High-throughput

0.536

High

912121

RPC6
DNA-directed RNA polymerase III subunit RPC6

1

1

High-throughput

0.536

High

912157

RUVB1
RuvB-like 1

1

2

High-throughput

0.536

High

912162

CTDP1
RNA polymerase II subunit A C-terminal domain phosphatase

1

1

High-throughput

0.536

High

506000

GRL1A
DNA-directed RNA polymerase II subunit GRINL1A

2

0

High-throughput

0.528

High

912100

UBE2W
Ubiquitin-conjugating enzyme E2 W

1

0

Small-scale

0.527

High

155094

SOCS2
Suppressor of cytokine signaling 2

1

1

High-throughput

0.515

High

156018

SOCS6
Suppressor of cytokine signaling 6

1

1

High-throughput

0.515

High

64426

BDP1
Transcription factor TFIIIB component B'' homolog

1

0

High-throughput

0.513

High

219480

MED7
Mediator of RNA polymerase II transcription subunit 7

1

0

High-throughput

0.513

High

484446

DLDH
Dihydrolipoyl dehydrogenase, mitochondrial

1

0

High-throughput

0.513

High

681770

RBTN2
Rhombotin-2

1

0

High-throughput

0.513

High

843401

HD
Huntingtin

1

0

High-throughput

0.513

High

895426

SPB8
Serpin B8

1

0

High-throughput

0.513

High

910819

IMA1
Importin subunit alpha-1

1

0

High-throughput

0.513

High

912065

MK06
Mitogen-activated protein kinase 6

1

0

High-throughput

0.513

High

912079

TRM1L
tRNA

1

0

High-throughput

0.513

High

912088

RYBP
RING1 and YY1-binding protein

1

0

High-throughput

0.513

High

912092

STK35
Serine/threonine-protein kinase 35

1

0

High-throughput

0.513

High

912094

NELFB
Negative elongation factor B

1

0

High-throughput

0.513

High

912096

JARD2
Protein Jumonji

1

0

High-throughput

0.513

High

912112

EPAS1
Endothelial PAS domain-containing protein 1

1

0

High-throughput

0.513

High

912115

MED18
Mediator of RNA polymerase II transcription subunit 18

1

0

High-throughput

0.513

High

912120

MAF1
Repressor of RNA polymerase III transcription MAF1 homolog

1

0

High-throughput

0.513

High

912123

NELFA
Negative elongation factor A

1

0

High-throughput

0.513

High

912135

INT9
Integrator complex subunit 9

1

0

High-throughput

0.513

High

912143

MED29
Mediator of RNA polymerase II transcription subunit 29

1

0

High-throughput

0.513

High

912159

MED31
Mediator of RNA polymerase II transcription subunit 31

1

0

High-throughput

0.513

High

648114

NDKB
Nucleoside diphosphate kinase B

1

0

High-throughput

0.493

High

912153

GPN3
GPN-loop GTPase 3

1

3

High-throughput

0.489

High

912035

RPAB3
DNA-directed RNA polymerases I, II, and III subunit RPABC3

1

0

Small-scale

0.480

High

912042

PTEN
Phosphatidylinositol 3,4,5-trisphosphate 3-phosphatase and dual-specificity protein phosphatase PTEN

1

0

High-throughput

0.480

High

130409

SPT5H
Transcription elongation factor SPT5

1

3

High-throughput

0.479

High

131846

WWP2
NEDD4-like E3 ubiquitin-protein ligase WWP2

1

2

High-throughput

0.479

High

227442

SPOP
Speckle-type POZ protein

1

1

High-throughput

0.479

High

239553

MED14
Mediator of RNA polymerase II transcription subunit 14

1

4

High-throughput

0.479

High

262499

MCE1
mRNA-capping enzyme

1

2

High-throughput

0.479

High

287774

MED6
Mediator of RNA polymerase II transcription subunit 6

1

2

High-throughput

0.479

High

315313

RECQ4
ATP-dependent DNA helicase Q4

1

1

High-throughput

0.479

High

316269

RECQ5
ATP-dependent DNA helicase Q5

1

1

High-throughput

0.479

High

405928

MYCN
N-myc proto-oncogene protein

1

1

High-throughput

0.479

High

519865

ANDR
Androgen receptor

1

2

High-throughput

0.479

High

569077

T2FB
General transcription factor IIF subunit 2

1

1

High-throughput

0.479

High

766339

PHB1
Prohibitin 1

1

1

High-throughput

0.479

High

791199

SYUA
Alpha-synuclein

1

1

High-throughput

0.479

High

881498

CDK8
Cyclin-dependent kinase 8

1

1

High-throughput

0.479

High

912044

WDR5
WD repeat-containing protein 5

1

1

High-throughput

0.479

High

912047

H4
Histone H4

1

1

High-throughput

0.479

High

912053

FOXO1
Forkhead box protein O1

1

1

High-throughput

0.479

High

912061

BRD3
Bromodomain-containing protein 3

1

1

High-throughput

0.479

High

912068

RPRD2
Regulation of nuclear pre-mRNA domain-containing protein 2

1

2

High-throughput

0.479

High

912077

MD13L
Mediator of RNA polymerase II transcription subunit 13-like

1

1

High-throughput

0.479

High

912080

HUWE1
E3 ubiquitin-protein ligase HUWE1

1

3

High-throughput

0.479

High

912095

ESR2
Estrogen receptor beta

1

2

High-throughput

0.479

High

912098

MED12
Mediator of RNA polymerase II transcription subunit 12

1

1

High-throughput

0.479

High

912099

FBXW7
F-box/WD repeat-containing protein 7

1

1

High-throughput

0.479

High

912108

RING2
E3 ubiquitin-protein ligase RING2

1

2

High-throughput

0.479

High

912117

CDK19
Cyclin-dependent kinase 19

1

1

High-throughput

0.479

High

912127

SFR19
Splicing factor, arginine/serine-rich 19

1

1

High-throughput

0.479

High

912131

GPN1
GPN-loop GTPase 1

1

3

High-throughput

0.479

High

912148

DNM3B
DNA

1

1

Small-scale

0.479

High

912151

MED13
Mediator of RNA polymerase II transcription subunit 13

1

1

High-throughput

0.479

High

912154

XPO7
Exportin-7

1

1

High-throughput

0.479

High

912163

DNM3A
DNA

1

1

Small-scale

0.479

High

128877

MEN1
Menin

1

0

High-throughput

0.458

High

241158

PRKN
E3 ubiquitin-protein ligase parkin

1

0

High-throughput

0.458

High

247754

NUPR1
Nuclear protein 1

1

0

High-throughput

0.458

High

326312

SCAF4
SR-related and CTD-associated factor 4

1

0

High-throughput

0.458

High

339330

MET18
Histidine protein methyltransferase 1 homolog

1

0

High-throughput

0.458

High

347591

BAG3
BAG family molecular chaperone regulator 3

1

0

High-throughput

0.458

High

567315

TCTP
Translationally-controlled tumor protein

1

0

High-throughput

0.458

High

606472

CEBPB
CCAAT/enhancer-binding protein beta

1

0

High-throughput

0.458

High

666816

CCNC
Cyclin-C

1

0

High-throughput

0.458

High

830389

CCNF
Cyclin-F

1

0

High-throughput

0.458

High

851472

GATA4
Transcription factor GATA-4

1

0

High-throughput

0.458

High

853878

MP2K4
Dual specificity mitogen-activated protein kinase kinase 4

1

0

High-throughput

0.458

High

878816

NR2C2
Nuclear receptor subfamily 2 group C member 2

1

0

High-throughput

0.458

High

904485

MECP2
Methyl-CpG-binding protein 2

1

0

High-throughput

0.458

High

912039

FOXA1
Hepatocyte nuclear factor 3-alpha

1

0

High-throughput

0.458

High

912040

NLRP6
NACHT, LRR and PYD domains-containing protein 6

1

0

High-throughput

0.458

High

912041

ELOF1
Transcription elongation factor 1 homolog

1

0

Small-scale

0.458

High

912045

UBE2H
Ubiquitin-conjugating enzyme E2 H

1

0

High-throughput

0.458

High

912055

MED21
Mediator of RNA polymerase II transcription subunit 21

1

0

High-throughput

0.458

High

912056

CUL3
Cullin-3

1

0

High-throughput

0.458

High

912058

IKKE
Inhibitor of nuclear factor kappa-B kinase subunit epsilon

1

0

High-throughput

0.458

High

912059

TNIP1
TNFAIP3-interacting protein 1

1

0

High-throughput

0.458

High

912060

U5S1
116 kDa U5 small nuclear ribonucleoprotein component

1

0

High-throughput

0.458

High

912062

MED22
Mediator of RNA polymerase II transcription subunit 22

1

0

High-throughput

0.458

High

912063

MED1
Mediator of RNA polymerase II transcription subunit 1

1

0

High-throughput

0.458

High

912064

IKBB
NF-kappa-B inhibitor beta

1

0

High-throughput

0.458

High

912066

CL16A
Protein CLEC16A

1

0

High-throughput

0.458

High

912072

IFIX
Pyrin and HIN domain-containing protein 1

1

0

High-throughput

0.458

High

912073

MED27
Mediator of RNA polymerase II transcription subunit 27

1

0

High-throughput

0.458

High

912074

PRP8
Pre-mRNA-processing-splicing factor 8

1

0

High-throughput

0.458

High

912075

INT5
Integrator complex subunit 5

1

0

High-throughput

0.458

High

912081

UBP37
Ubiquitin carboxyl-terminal hydrolase 37

1

0

Small-scale

0.458

High

912083

CEP57
Centrosomal protein of 57 kDa

1

0

High-throughput

0.458

High

912087

INT1
Integrator complex subunit 1

1

0

High-throughput

0.458

High

912090

TNIP2
TNFAIP3-interacting protein 2

1

0

High-throughput

0.458

High

912093

DOT1L
Histone-lysine N-methyltransferase, H3 lysine-79 specific

1

0

High-throughput

0.458

High

912101

MED8
Mediator of RNA polymerase II transcription subunit 8

1

0

High-throughput

0.458

High

912102

MED30
Mediator of RNA polymerase II transcription subunit 30

1

0

High-throughput

0.458

High

912105

CI072
Guanine nucleotide exchange factor C9orf72

1

0

High-throughput

0.458

High

912109

TBX5
T-box transcription factor TBX5

1

0

High-throughput

0.458

High

912118

FACD2
Fanconi anemia group D2 protein

1

0

High-throughput

0.458

High

912122

MED28
Mediator of RNA polymerase II transcription subunit 28

1

0

High-throughput

0.458

High

912126

EGLN3
Prolyl hydroxylase EGLN3

1

0

High-throughput

0.458

High

912128

MED20
Mediator of RNA polymerase II transcription subunit 20

1

0

High-throughput

0.458

High

912132

MED4
Mediator of RNA polymerase II transcription subunit 4

1

0

High-throughput

0.458

High

912136

MED17
Mediator of RNA polymerase II transcription subunit 17

1

0

High-throughput

0.458

High

912137

INT10
Integrator complex subunit 10

1

0

Small-scale

0.458

High

912144

MED11
Mediator of RNA polymerase II transcription subunit 11

1

0

High-throughput

0.458

High

912150

ZRAN1
Ubiquitin thioesterase ZRANB1

1

0

High-throughput

0.458

High

912155

INT6
Integrator complex subunit 6

1

0

High-throughput

0.458

High

912160

TRAF6
TNF receptor-associated factor 6

1

0

High-throughput

0.458

High

912084

MD12L
Mediator of RNA polymerase II transcription subunit 12-like protein

1

1

High-throughput

0.437

High

912091

RASF8
Ras association domain-containing protein 8

1

1

High-throughput

0.437

High

912146

PHRF1
PHD and RING finger domain-containing protein 1

1

1

High-throughput

0.437

High

516793

RPC22
Protein POLR1D, isoform 2

1

0

High-throughput

0.426

High

912067

LRRK2
Leucine-rich repeat serine/threonine-protein kinase 2

1

0

High-throughput

0.426

High

912085

BAP18
BPTF-associated chromatin complex component 1

1

0

High-throughput

0.426

High

912130

LN28A
Protein lin-28 homolog A

1

0

High-throughput

0.426

High

912134

PDRG1
p53 and DNA damage-regulated protein 1

2

0

High-throughput

0.318

High

912071

GL1AD
DNA-directed RNA polymerase II subunit GRINL1A, isoforms 4/5

2

0

High-throughput

0.305

High

182092

PFD6
Prefoldin subunit 6

1

0

High-throughput

0.279

Low

912110

HCD2
3-hydroxyacyl-CoA dehydrogenase type-2

1

0

High-throughput

0.279

Low

912147

UVRAG
UV radiation resistance-associated gene protein

1

0

High-throughput

0.279

Low

683219

TNR5
Tumor necrosis factor receptor superfamily member 5

1

0

High-throughput

0.269

Low

912038

ARSF
Arylsulfatase F

1

0

High-throughput

0.269

Low

254564

EIF1B
Eukaryotic translation initiation factor 1b

1

0

High-throughput

0.249

Low

293406

CD123
Translation initiation factor eIF2 assembly protein

1

0

High-throughput

0.249

Low

912054

M4K2
Mitogen-activated protein kinase kinase kinase kinase 2

1

0

High-throughput

0.249

Low

912069

OTUD1
OTU domain-containing protein 1

1

0

High-throughput

0.249

Low

912076

TRI67
Tripartite motif-containing protein 67

1

0

High-throughput

0.249

Low

912082

ZCH18
Zinc finger CCCH domain-containing protein 18

1

0

High-throughput

0.249

Low

912089

PDZD8
PDZ domain-containing protein 8

1

0

High-throughput

0.249

Low

912103

DDRGK
DDRGK domain-containing protein 1

1

0

High-throughput

0.249

Low

912124

PKHA4
Pleckstrin homology domain-containing family A member 4

1

0

High-throughput

0.249

Low

912141

ASND1
Asparagine synthetase domain-containing protein 1

1

0

High-throughput

0.249

Low

117727

ASURF
ASNSD1 upstream open reading frame protein

1

0

High-throughput

0.232

Low

912051

TAGL
Transgelin

1

0

High-throughput

0.232

Low

912104

NEUL4
Neuralized-like protein 4

1

0

High-throughput

0.232

Low


Service provided by Combinatics, Japan

Last updated: 11Aug2025