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RNA Polymerase II Peptide

≥85% (SDS-PAGE), recombinant, expressed in E. coli

Synonyme(s) :

POLRA, RPB1, RPO2, RPOL2, hRPB220

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About This Item

Code UNSPSC :
12352202
Nomenclature NACRES :
NA.26

product name

RNA Polymerase II, C-terminal human, recombinant, expressed in E. coli, ≥85% (SDS-PAGE)

Source biologique

human

Produit recombinant

expressed in E. coli

Pureté

≥85% (SDS-PAGE)

Forme

frozen liquid

Poids mol.

~42.2 kDa

Conditionnement

pkg of 10 μg

Conditions de stockage

avoid repeated freeze/thaw cycles

Concentration

400 μg/mL

Couleur

clear colorless

Numéro d'accès NCBI

NM_000937

Numéro d'accès UniProt

P24928

Conditions d'expédition

dry ice

Température de stockage

−70°C

Informations sur le gène

human ... POLR2A(5430)

Catégories apparentées

Description générale

RNA polymerase II (eukaryotic) contains around 10 subunits with a combined molecular weight of 500,000Da. The subunit structure of this enzyme is conserved amongst eukaryotes, and this subunits structure shares similarities with that of RNA pol I and III. The carboxy-terminal repeat domain (CTD) of the largest subunit of RNA pol II contains tandem repeats of a heptapeptide sequence Tyr-Ser-Pro-Thr-Ser-Pro-Ser which is highly conserved among eukaryotic organisms.

Actions biochimiques/physiologiques

The carboxy-terminal repeat domain (CTD) of the largest subunit of RNA pol II contains tandem repeats of a heptapeptide sequence Tyr-Ser-Pro-Thr-Ser-Pro-Ser which is highly conserved among eukaryotic organisms. There are two forms of RNA pol II in vivo, designated IIO, which is extensively phosphorylated at the CTD, and IIA, which is not phosphorylated. The IIA form preferentially enters the pre-initiation complex (PIC), whereas IIO is found in the elongating complex. The kinase activity of TFIIH can mediate CTD phosphorylation, although other kinases, including Cdc2, Ctk1, the Srb10-Srb11 kinase-cyclin pair, and P-TEFb, have also been implicated in CTD phosphorylation. A phosphatase responsible for the dephosphorylation of the CTD has also been identified. CTD phosphatase activity is regulated by TFIIB and TFIIF. The CTD has also been implicated in pre-mRNA processing, most likely functioning as a platform for the recruitment and assembly of factors involved in pre-mRNA processing.

Forme physique

Clear and colorless frozen liquid solution

Notes préparatoires

Use a manual defrost freezer and avoid repeated freeze-thaw cycles. While working, please keep sample on ice.

Code de la classe de stockage

10 - Combustible liquids

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Certificats d'analyse (COA)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

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Consulter la Bibliothèque de documents

RNA polymerase II carboxy-terminal domain kinases: emerging clues to their function.
Prelich G
Eukaryotic Cell, 1(2), 153-162 (2002)
4 Carboxy-terminal Domain of the Largest Subunit of Eukaryotic RNA Polymerase II.
Corden JL and Ingles CJ
Cold Spring Harbor molecular case studies, 81-107 (1992)
Zhiqiang Wu et al.
PloS one, 6(3), e18157-e18157 (2011-04-13)
Nuclear factor κB (NF-κB)-mediated pathways have been widely implicated in cell survival, development and tumor progression. Although the molecular events of determining NF-κB translocation from cytoplasm to nucleus have been extensively documented, the regulatory mechanisms of NF-κB activity inside the
The role of multisite phosphorylation in the regulation of RNA polymerase II activity.
M E Dahmus
Progress in nucleic acid research and molecular biology, 48, 143-179 (1994-01-01)
T O'Brien et al.
Nature, 370(6484), 75-77 (1994-07-07)
The carboxy-terminal domain (CTD) of the large subunit of RNA polymerase II is essential in vivo, and is found in either an unphosphorylated (IIa) or hyperphosphorylated (IIo) form. The Drosophila uninduced hsp70 and hsp26 genes, and the constitutively expressed beta-1
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