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merck millipore,默克密理博,ABE30,Anti-RNA polymerase II subunit B1 Antibody, clone 4F8
产品名称：Anti-RNA polymerase II subunit B1 Antibody, clone 4F8
产品型号：ABE30
Use Anti-RNA polymerase II subunit B1 Antibody, clone 4F8 (rabbit polyclonal antibody) validated in WB, ICC to detect RNA polymerase II subunit B1 also known as DNA-directed RNA polymerase II subunit More>>
merck millipore,默克密理博,ABE30,Anti-RNA polymerase II subunit B1 Antibody, clone 4F8
- 产品介绍
重要规格表
品种反应性 主要应用 宿主 格式 抗体类型 Ca, H, M, R, B, Eq ICC, WB Rb Affinity Purified Polyclonal Antibody 描述 产品目录编号 ABE30 描述 Anti-RNA polymerase II subunit B1 Antibody, clone 4F8 Alternate Names - polymerase (RNA) II (DNA directed) polypeptide A (220kD)
- polymerase (RNA) II (DNA directed) polypeptide A, 220kDa
- DNA-directed RNA polymerase III largest subunit
- DNA-directed RNA polymerase II subunit RPB1
- RNA polymerase II subunit B1
- DNA-directed RNA polymerase II subunit A
- DNA-directed RNA polymerase II largest subunit, RNA polymerase II 220 kd subunit
- RNA-directed RNA polymerase II subunit RPB1
背景信息 RNA polymerase II subunit B1 (RPB1) is the largest subunit of the RNA polymerase II complex. As a holoenzyme RNA polymerase II catalyzes transcription of eukaryotic DNA into RNA using the four ribonucleoside triphosphates as substrates. The RPB1 subunit, in combination with other polymerase subunits, forms a large central cleft that maintains contact between the active site of the enzyme, the DNA template, and the nascent RNA transcript. This subunit also contains a carboxy terminal domain (CTD) consisting of tandem heptapeptide repeats. In actively transcribing RNA polymerase ‘Ser-2’ and ‘Ser-5’ of the heptapeptide repeat are phosphorylated. Phosphorylation activates the RNA polymerase II beta subunit, allowing it to serve as an assembly platform for additional subunits that modulate initiation, elongation, termination and mRNA processing. 产品信息 格式 Affinity Purified 控制 - HeLa nuclear extract
演示 Purified rabbit polyclonal in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide. 应用 应用 Use Anti-RNA polymerase II subunit B1 Antibody, clone 4F8 (rabbit polyclonal antibody) validated in WB, ICC to detect RNA polymerase II subunit B1 also known as DNA-directed RNA polymerase II subunit RPB1. 主要应用 - Immunocytochemistry
- Western Blotting
应用说明 Immunocytochemistry Analysis: 1:500 dilution from a representative lot detected RNA polymerase II subunit B1 in HeLa cells. 生物信息 免疫原品种 KLH-conjugated linear peptide corresponding to human RNA polymerase II subunit B1. 浓缩 Please refer to the Certificate of Analysis for the lot-specific concentration. 宿主 Rabbit 品种反应性 CanineHumanMouseRatBovineHorse Species Reactivity Note Demonstrated to react with Human. Predicted to react with Mouse, Rat, Bovine, Horse, and Canine based on 100% sequence homology. 抗体类型 Polyclonal Antibody Entrez基因编号 - NP_000928
Entrez基因汇总 Summary: This gene encodes the largest subunit of RNA polymerase II, the polymerase responsible for synthesizing messenger RNA in eukaryotes. The product of this gene contains a carboxy terminal domain composed of heptapeptide repeats that are essential for polymerase activity. These repeats contain serine and threonine residues that are phosphorylated in actively transcribing RNA polymerase. In addition, this subunit, in combination with several other polymerase subunits, forms the DNA binding domain of the polymerase, a groove in which the DNA template is transcribed into RNA. [provided by RefSeq]. 基因符号 - RPOL2
- RpIILS
- POLRA
- RPB1
- hsRPB1
- RPBh1
- RPO2
- POLR2
- hRPB220
纯化方法 Affinity purified UniProt编号 - P24928
UniProt汇总 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. RPB1 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 RPB1 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 (RPB1), which serves as a platform for assembly of factors that regulate transcription initiation, elongation, termination and mRNA processing. Acts as a RNA-dependent RNA polymerase when associated with small delta antigen of Hepatitis delta virus, acting both as a replicate and transcriptase for the viral RNA circular genome.
CATALYTIC ACTIVITY: Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1).
SUBUNIT STRUCTURE: Component of the RNA polymerase II (Pol II) complex consisting of 12 subunits. The phosphorylated C-terminal domain interacts with FNBP3 and SYNCRIP. Interacts with SAFB/SAFB1. Interacts with CCNL1 and MYO1C By similarity. Interacts with CCNL2 and SFRS19. Component of a complex which is at least composed of HTATSF1/Tat-SF1, the P-TEFb complex components CDK9 and CCNT1, RNA polymerase II, SUPT5H, and NCL/nucleolin. Interacts with PAF1. Interacts (via C-terminus) with FTSJD2, CTDSP1 and RBM16. Interacts via the phosphorylated C-terminal domain with WDR82 and with SETD1A and SETD1B only in the presence of WDR82.
SUBCELLULAR LOCATION: Nucleus.
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 phosphataes, and a "CTD code" that specifies the position of Pol II within the transcription cycle has been proposed. Dephosphorylated by the protein phosphatase CTDSP1.
Ubiquitinated by WWP2 leading to proteasomal degradation (by similarity).
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 nucelotide 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.产品使用声明 质量保证 Evaluated by Western Blot in HeLa nuclear extract.
Western Blot Analysis: 1 µg/mL of this antibody detected RNA polymerase II subunit B1 on 10 µg of HeLa nuclear extract.使用声明 - Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
储存和货运信息 存储条件 Stable for 1 year at 2-8°C from date of receipt. 包装信息 数量 100 µg
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