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Anti-POLR2A antibody [A5F4] LM800061M

WB: 1:500-1:2,000 IHC-P: 1:100-1:500 FC: 1:100-1:500

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Anti-POLR2A antibody [A5F4] 

产品描述

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. Regulation of gene expression levels depends on the balance between methylation and acetylation levels of tha CTD-lysines. Initiation or early elongation steps of transcription of growth-factors-induced immediate early genes are regulated by the acetylation status of the CTD. Methylation and dimethylation have a repressive effect on target genes expression.

产品名称Anti-POLR2A antibody [A5F4]

分子量217 kDa

种属反应性Human,Mouse,Rat

验证应用WB,IHC-P,FC

抗体类型小鼠单抗

免疫原Recombinant protein within human POLR2A aa 751-950 / 1,970.

偶联Non-conjugated

性能

形态Liquid

浓度2 mg/mL.

存放说明Store at +4℃ after thawing. Aliquot store at -20℃. Avoid repeated freeze / thaw cycles.

存储缓冲液1*TBS (pH7.4), 0.2% BSA, 50% Glycerol. Preservative: 0.05% Sodium Azide.

亚型IgG1

纯化方式Protein G affinity purified.

亚细胞定位Cytoplasm, Nucleus, Chromosome.

数据链接SwissProt: P24928 Human

SwissProt: P08775 Mouse

SwissProt: D4A5A6 Rat

其它名称

DNA directed RNA polymerase II A antibody

DNA-directed RNA polymerase II largest subunit RNA polymerase II 220 kd subunit antibody

DNA-directed RNA polymerase II subunit A antibody

more

应用

  • WB: 1:500-1:2,000
    IHC-P: 1:100-1:500
    FC: 1:100-1:500

  • Fig1: Western blot analysis of POLR2A on MCF-7 cell lysates. Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (, 1/500) was used in 5% NFDM/TBST at room temperature for 2 hours. Goat Anti-Mouse IgG - HRP Secondary Antibody (HA1006) at 1:20,000 dilution was used for 1 hour at room temperature.

    Fig2: Western blot analysis of POLR2A on mouse lung tissue lysates. Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (, 1/500) was used in 5% NFDM/TBST at room temperature for 2 hours. Goat Anti-Mouse IgG - HRP Secondary Antibody (HA1006) at 1:20,000 dilution was used for 1 hour at room temperature.

    Fig3: Immunohistochemical analysis of paraffin-embedded rat bladder tissue using anti-POLR2A antibody. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH 6.0) for 20 minutes. The tissues were blocked in 1% BSA for 30 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (, 1/400) for 30 minutes at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.

    Fig4: Flow cytometric analysis of POLR2A was done on SH-SY5Y cells. The cells were fixed, permeabilized and stained with the primary antibody (, 1ug/ml) (red) compared with Mouse IgG, monoclonal - Isotype Control ( green). After incubation of the primary antibody at room temperature for an hour, the cells were stained with a Alexa Fluor®488 conjugate-Goat anti-Mouse IgG Secondary antibody at 1/1000 dilution for 30 minutes.Unlabelled sample was used as a control (cells without incubation with primary antibody; black).


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