Anti-XPB1

Make to order. Production time: 70-80 business days. Deliverables: 1. 200 µg antigen (used as positive control), 2. 1 ml pre-immune serum (used as negative control) , 3. Rabbit polyclonal antibody, antigen affinity purified. Quality Guarantee: 1. Antibody purity > 90% confirmed by SDS-PAGE, 2. Antibody titer > 1: 64,000 confirmed by ELISA, 3. WB positive with the immunogen protein (not applicable for synthetic peptide). Applications: ELISA, WB (positive for the recombinant immunogen protein/peptide). Buffer: Preservative: 0.03% Proclin 300, Constituents: 50% Glycerol, 0.01M PBS, pH 7.4. Protein function: 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 and twisting that allows XPD/ERCC2 helicase to anchor. The ATP-dependent helicase activity of XPB/ERCC3 may be required for promoter escape. 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. Partially complements UV sensitivity of a yeast SSL2 mutation (PubMed:11737776). Required during the early stages of development, including seed germination (PubMed:11737776). [The UniProt Consortium]