TFIIH p89 Antibody (YA5168)
(Synonyms: ERCC3; XPB; XPBC; TFIIH basal transcription factor complex helicase XPB subunit; Basic transcription factor 2 89 kDa subunit; BTF2 p89; DNA excision repair protein ERCC-3; DNA repair protein complementing XP-B cells; TFIIH basal transcripti)TFIIH p89 Antibody (YA5168) is a Mouse-derived and non-conjugated monoclonal antibody, targeting to TFIIH p89.
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Host:
Mouse
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Application:
WB
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Reactivity :
Human, Mouse, Rat, Bovine, Dog
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Formulation:
Supplied in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.
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Conjugation:
Non-conjugated
To place orders, for customer services and technical support, please contact: MedChemExpress USA
Tel: 609-228-6898 E-mail: [email protected] [email protected]
Applications
| Application |
WB
WB: Western Blot
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|---|---|
| Dilution Ratio | 1:1000-1:2000 |
Product Details
TFIIH p89 Antibody (YA5168) is a Mouse-derived and non-conjugated monoclonal antibody, targeting to TFIIH p89.
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Host Mouse
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Clonality Monoclonal
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Species ReactivityHuman, Mouse, Rat, Bovine, Dog
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Calculated Molecular Weight Predicted band size: 89 kDa;
Purified recombinant human TFIIH p89 (C-terminus) protein fragments expressed in E.coli.
affinity purified.
Non-conjugated
Unmodified
Product Properties
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Appearance
Liquid
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Formulation
Supplied in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.
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Storage & Stability
Stored at -20°C for 1 year. Avoid repeated freeze / thaw cycles.
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Shipping
Shipping with blue ice.
Background
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Function
TFIIH p89 is an ATP-dependent 3'-5' DNA helicase/translocase. Binds dsDNA rather than ssDNA, unzipping it in a translocase rather than classical helicase activity. Component of the general transcription and DNA repair factor IIH (TFIIH) core complex. When complexed to CDK-activating kinase (CAK), involved in RNA transcription by RNA polymerase II. The ATPase activity of XPB/ERCC3, but not its helicase activity, is required for DNA opening; it may wrap around the damaged DNA wedging it open, causing localized melting that allows XPD/ERCC2 helicase to anchor. In transcription, TFIIH has an essential role in transcription initiation. When the pre-initiation complex (PIC) has been established, TFIIH is required for promoter opening and promoter escape. The ATP-dependent helicase activity of XPB/ERCC3 is required for promoter opening and promoter escape. In transcription pre-initiation complexes induces and propagates a DNA twist to open DNA. Also involved in transcription-coupled nucleotide excision repair (NER) of damaged DNA. In NER, TFIIH acts by opening DNA around the lesion to allow the excision of the damaged oligonucleotide and its replacement by a new DNA fragment. The structure of the TFIIH transcription complex differs from the NER-TFIIH complex; large movements by XPD/ERCC2 and XPB/ERCC3 are stabilized by XPA. XPA retains XPB/ERCC3 at the 5' end of a DNA bubble (mimicking DNA damage)[1][2][3][4][5][6][7][8][9][10].
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Subcellular Localization
Nucleus
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Subunit
Component of the 7-subunit TFIIH core complex composed of XPB/ERCC3, XPD/ERCC2, GTF2H1, GTF2H2, GTF2H3, GTF2H4 and GTF2H5, which is active in NER. The core complex associates with the 3-subunit CDK-activating kinase (CAK) module composed of CCNH/cyclin H, CDK7 and MNAT1 to form the 10-subunit holoenzyme (holo-TFIIH) active in transcription (PubMed:8663148, PubMed:9852112). Interacts with PUF60 (PubMed:10882074, PubMed:11239393). Interacts with ATF7IP (PubMed:19106100). Interacts with KAT2A; leading to KAT2A recruitment to promoters and acetylation of histones (PubMed:30894545). 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
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SwissProt ID
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Synonyms
ERCC3; XPB; XPBC; TFIIH basal transcription factor complex helicase XPB subunit; Basic transcription factor 2 89 kDa subunit; BTF2 p89; DNA excision repair protein ERCC-3; DNA repair protein complementing XP-B cells; TFIIH basal transcripti
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