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Details on Person UniProt:P52434-3 POLR2H
| Class:Id | ReferenceIsoform:8965332 |
|---|---|
| _chainChangeLog | initiator methionine:1 added on Fri February 17 2017;chain:2-150 added on Fri February 17 2017;initiator methionine:1 for 8965332 removed on Fri Nov 03 2023;initiator methionine: for 8965332 added on Fri Nov 03 2023;initiator methionine: for 8965332 removed on Fri Aug 15 2025;initiator methionine:1 for 8965332 added on Fri Aug 15 2025 |
| _displayName | UniProt:P52434-3 POLR2H |
| _timestamp | 2025-08-15 21:10:45 |
| chain | initiator methionine:1 chain:2-150 |
| checksum | 944D0860809F1425 |
| comment | FUNCTION DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Common component of RNA polymerases I, II and III which synthesize ribosomal RNA precursors, mRNA precursors and many functional non-coding RNAs, and small RNAs, such as 5S rRNA and tRNAs, respectively.SUBUNIT Component of the RNA polymerase I (Pol I), RNA polymerase II (Pol II) and RNA polymerase III (Pol III) complexes consisting of at least 13, 12 and 17 subunits, respectively (PubMed:16632472, PubMed:16809778, PubMed:27193682, PubMed:30190596, PubMed:33558764, PubMed:9852112). Pol I complex consists of a ten-subunit catalytic core composed of POLR1A/RPA1, POLR1B/RPA2, POLR1C/RPAC1, POLR1D/RPAC2, POLR1H/RPA12, POLR2E/RPABC1, POLR2F/RPABC2, POLR2H/RPABC3, POLR2K/RPABC4 and POLR2L/RPABC5; a mobile stalk subunit POLR1F/RPA43 protruding from the core and additional subunits homologous to general transcription factors POLR1E/RPA49 and POLR1G/RPA34. Part of Pol I pre-initiation complex (PIC), in which Pol I core assembles with RRN3 and promoter-bound UTBF and SL1/TIF-IB complex (PubMed:34671025, PubMed:34887565, PubMed:36271492). Pol II complex contains a ten-subunit catalytic core composed of POLR2A/RPB1, POLR2B/RPB2, POLR2C/RPB3, POLR2I/RPB9, POLR2J/RPB11, POLR2E/RPABC1, POLR2F/RPABC2, POLR2H/RPABC3, POLR2K/RPABC4 and POLR2L/RPABC5 and a mobile stalk composed of two subunits POLR2D/RPB4 and POLR2G/RPB7. Part of Pol II(G) complex, in which Pol II core associates with an additional subunit POLR2M; unlike conventional Pol II, Pol II(G) functions as a transcriptional repressor. Part of TBP-based Pol II pre-initiation complex (PIC), in which Pol II core assembles with general transcription factors and other specific initiation factors including GTF2E1, GTF2E2, GTF2F1, GTF2F2, TCEA1, ERCC2, ERCC3, GTF2H2, GTF2H3, GTF2H4, GTF2H5, GTF2A1, GTF2A2, GTF2B and TBP; this large multi-subunit PIC complex mediates DNA unwinding and targets Pol II core to the transcription start site where the first phosphodiester bond forms. Directly interacts with POLR2A (PubMed:16632472, PubMed:27193682, PubMed:30190596, PubMed:9852112). Pol III complex consists of a ten-subunit catalytic core composed of POLR3A/RPC1, POLR3B/RPC2, POLR1C/RPAC1, POLR1D/RPAC2, POLR3K/RPC10, POLR2E/RPABC1, POLR2F/RPABC2, POLR2H/RPABC3, POLR2K/RPABC4 and POLR2L/RPABC5; a mobile stalk composed of two subunits POLR3H/RPC8 and CRCP/RPC9, protruding from the core and functioning primarily in transcription initiation; and additional subunits homologous to general transcription factors of the RNA polymerase II machinery, POLR3C/RPC3-POLR3F/RPC6-POLR3G/RPC7 heterotrimer required for transcription initiation and POLR3D/RPC4-POLR3E/RPC5 heterodimer involved in both transcription initiation and termination (PubMed:33335104, PubMed:33558764, PubMed:33558766, PubMed:33674783, PubMed:34675218).SUBCELLULAR LOCATION Belongs to the eukaryotic RPB8 RNA polymerase subunit family. |
| created | [InstanceEdit:8964659] Weiser, JD |
| description | recommendedName: DNA-directed RNA polymerases I, II, and III subunit RPABC3 shortName: RNA polymerases I, II, and III subunit ABC3 alternativeName: DNA-directed RNA polymerase II subunit H alternativeName: DNA-directed RNA polymerases I, II, and III 17.1 kDa polypeptide alternativeName: RPB17 alternativeName: RPB8 homolog shortName: hRPB8 |
| geneName | POLR2H |
| identifier | P52434 |
| isoformParent | |
| isSequenceChanged | FALSE |
| keyword | 3D-structure Acetylation Alternative splicing Direct protein sequencing DNA-binding DNA-directed RNA polymerase Nucleus Proteomics identification Reference proteome Transcription |
| modified | [InstanceEdit:9836292] Weiser, Joel, 2023-05-25 [InstanceEdit:9852000] Weiser, Joel, 2023-11-03 [InstanceEdit:9862192] Weiser, Joel, 2024-02-26 [InstanceEdit:9909836] Weiser, Joel, 2024-05-14 [InstanceEdit:9917590] Weiser, Joel, 2024-08-09 [InstanceEdit:9926675] Weiser, Joel, 2024-11-03 [InstanceEdit:9963647] Weiser, Joel, 2025-08-15 |
| name | POLR2H |
| referenceDatabase | [ReferenceDatabase:2] UniProt |
| referenceGene | [ReferenceDNASequence:9003785] ENSEMBL:ENSG00000163882 POLR2H [Homo sapiens] |
| secondaryIdentifier | RPAB3_HUMAN C9J413 C9JBJ6 C9JCU7 C9JUA8 P53802 Q969R0 |
| sequenceLength | 150 |
| species | [Species:48887] Homo sapiens |
| variantIdentifier | P52434-3 |
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No pathways have been reviewed or authored by UniProt:P52434-3 POLR2H (8965332)
