Recombinant Human DNA-directed RNA polymerase II subunit RPB1(POLR2A) ,partial

Product Type Recombinant Protein
Uniprot No. P24928
Species Homo sapiens (Human)
Gene Names POLR2A
Protein Names Recommended name: DNA-directed RNA polymerase II subunit RPB1 Short name= RNA polymerase II subunit B1 EC= 2.7.7.6 Alternative name(s): DNA-directed RNA polymerase II subunit A DNA-directed RNA polymerase III largest subunit
Storage Store at -20°C, for extended storage, conserve at -20°C or -80°C.
Notes Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Target Details 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.
HGNC 9187
RGD 1587326
MGI 98086
References
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. Regulation of gene expression levels depends on the balance between methylation and acetylation levels of tha CTD-lysines (By similarity). Initiation or early elongation steps of transcription of growth-factors-induced immediate early genes are regulated by the acetylation status of the CTD
Subcellular Location Nucleus, Cytoplasm
Protein Families RNA polymerase beta' chain family
Database Links

HGNC: 9187

OMIM: 180660

KEGG: hsa:5430

STRING: 9606.ENSP00000314949

UniGene: Hs.270017

Product Details for Different Expression Systems

Product Name Recombinant Human DNA-directed RNA polymerase II subunit RPB1(POLR2A) ,partial,Yeast
Code CSB-YP018327HU
Size Pls inquiry other sizes
Source Yeast
Purity >85% (SDS-PAGE)
Tag Info The following tags are available.
N-terminal His-tagged
Tag-Free
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Storage Buffer Tris-based buffer,50% glycerol
Still Have Questions? Leave a Message or Start an on-line Chat
Product Name Recombinant Human DNA-directed RNA polymerase II subunit RPB1(POLR2A) ,partial,E.coli
Code CSB-EP018327HU
Size Pls inquiry other sizes
Source E.coli
Purity >85% (SDS-PAGE)
Tag Info The following tags are available.
N-terminal His-tagged and C-terminal Myc-tagged
N-terminal His-SUMO-tagged and C-terminal Myc-tagged
N-terminal His-B2M-tagged and C-terminal Myc-tagged
N-terminal His-GST-tagged and C-terminal Myc-tagged
N-terminal His-tagged
N-terminal His-SUMO-tagged
N-terminal His-B2M-tagged
N-terminal His-GST-tagged
N-terminal GST-tagged
Tag-Free
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Storage Buffer Tris-based buffer,50% glycerol
Still Have Questions? Leave a Message or Start an on-line Chat
Product Name Recombinant Human DNA-directed RNA polymerase II subunit RPB1(POLR2A) ,partial,Baculovirus
Code CSB-BP018327HU
Size Pls inquiry other sizes
Source Baculovirus
Purity >85% (SDS-PAGE)
Tag Info The following tags are available.
N-terminal His-tagged and C-terminal Myc-tagged
N-terminal His-tagged
Tag-Free
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Storage Buffer Tris-based buffer,50% glycerol
Still Have Questions? Leave a Message or Start an on-line Chat
Product Name Recombinant Human DNA-directed RNA polymerase II subunit RPB1(POLR2A) ,partial,Mammalian cell
Code CSB-MP018327HU
Size Pls inquiry other sizes
Source Mammalian cell
Purity >85% (SDS-PAGE)
Tag Info The following tags are available.
N-terminal His-tagged and C-terminal Myc-tagged
N-terminal His-tagged
Tag-Free
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Storage Buffer Tris-based buffer,50% glycerol
Still Have Questions? Leave a Message or Start an on-line Chat

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