Rabbit NRPB1 Polyclonal Antibody | anti-NRPB1 antibody
Rabbit anti-Arabidopsis thaliana (Mouse-ear cress) NRPB1 Polyclonal Antibody
Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M PBS, pH7.4
2. 1mL preimmune serum (negative control)
3. 10mg rabbit polyclonal antibody purified by Protein A/G.
2. Antibody titer > 1: 64,000 confirmed by ELISA
3. Western Blot positive for the immunogen protein (Not applicable for synthetic peptide).
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NCBI and Uniprot Product Information
Uniprot Description
Function: DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Largest and catalytic component of RNA polymerase II which synthesizes mRNA precursors and many functional non-coding RNAs. Forms the polymerase active center together with the second 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. NRPB1 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. At the start of transcription, a single-stranded DNA template strand of the promoter is positioned within the central active site cleft of Pol II. A bridging helix emanates from NRPB1 and crosses the cleft near the catalytic site and is thought to promote translocation of Pol II by acting as a ratchet that moves the RNA-DNA hybrid through the active site by switching from straight to bent conformations at each step of nucleotide addition. During transcription elongation, Pol II moves on the template as the transcript elongates. Elongation is influenced by the phosphorylation status of the C-terminal domain (CTD) of Pol II largest subunit (NRPB1), which serves as a platform for assembly of factors that regulate transcription initiation, elongation, termination and mRNA processing
By similarity. Ref.7
Catalytic activity: Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1).
Subunit structure: Component of the RNA polymerase II (Pol II) complex consisting of at least 12 subunits. Interacts with RDM1. Interacts (via CTD) with MED35A, MED35B and MED35C. Ref.6 Ref.7 Ref.8
Subcellular location: Nucleus. Note: Peri-nucleolar. Ref.8
Post-translational modification: The tandem 7 residues repeats in the C-terminal domain (CTD) can be highly phosphorylated. The phosphorylation activates Pol II. Phosphorylation occurs mainly at residues 'Ser-2' and 'Ser-5' of the heptapepdtide repeat. The phosphorylation state is believed to result from the balanced action of site-specific CTD kinases and phosphatase, and a 'CTD code' that specifies the position of Pol II within the transcription cycle has been proposed.
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 temporarily coordinated by three conserved aspartate residues of the two largest RNA Pol II subunits. The ribonucleoside triphosphate is transferred by a rotation to the nucleotide addition (A) site for pairing with the template DNA. The catalytic A site involves three conserved aspartate residues of the RNA Pol II largest subunit which permanently coordinate a second magnesium ion.
Sequence similarities: Belongs to the RNA polymerase beta' chain family.
Sequence caution: The sequence CAA36735.1 differs from that shown. Reason: Erroneous gene model prediction.
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Product Notes
The NRPB1 nrpb1 (Catalog #AAA7141256) is an Antibody produced from Rabbit and is intended for research purposes only. The product is available for immediate purchase. The Rabbit anti-Arabidopsis thaliana (Mouse-ear cress) NRPB1 Polyclonal Antibody reacts with Arabidopsis thaliana (Mouse-ear cress) and may cross-react with other species as described in the data sheet. AAA Biotech's NRPB1 can be used in a range of immunoassay formats including, but not limited to, ELISA (EIA), WB (Western Blot) (ensure identification of antigen). Researchers should empirically determine the suitability of the NRPB1 nrpb1 for an application not listed in the data sheet. Researchers commonly develop new applications and it is an integral, important part of the investigative research process. It is sometimes possible for the material contained within the vial of "NRPB1, Polyclonal Antibody" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.Disclaimer
Though we do strive to guarantee the information represented in this datasheet, AAA Biotech cannot be held responsible for any oversights or imprecisions. AAA Biotech reserves the right to adjust any aspect of this datasheet at any time and without notice. It is the responsibility of the customer to inform AAA Biotech of any product performance issues observed or experienced within 30 days of receipt of said product. To see additional details on this or any of our other policies, please see our Terms & Conditions page.Item has been added to Shopping Cart
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