POLR2B Protein (AA 1-1174) (His tag)

Catalog No. ABIN7555269

Recombinant POLR2B protein expressed in HEK-293 Cells.

Quick Overview for POLR2B Protein (AA 1-1174) (His tag) (ABIN7555269)

Target: POLR2B (Polymerase (RNA) II (DNA Directed) Polypeptide B, 140kDa (POLR2B))

Protein Type: Recombinant

Origin: Human

Source: HEK-293 Cells

Purity: > 90 % as determined by Bis-Tris PAGE, anti-tag ELISA, Western Blot and analytical SEC (HPLC)

Grade: custom-made

Product Details

Protein Characteristics: AA 1-1174

Purification tag / Conjugate: This POLR2B protein is labelled with His tag.

Purpose: Predefined custom protein recombinant POLR2B Protein expressed in mammalian cells.

Sequence: MYDADEDMQY DEDDDEITPD LWQEACWIVI SSYFDEKGLV RQQLDSFDEF IQMSVQRIVE DAPPIDLQAE AQHASGEVEE PPRYLLKFEQ IYLSKPTHWE RDGAPSPMMP NEARLRNLTY SAPLYVDITK TVIKEGEEQL QTQHQKTFIG KIPIMLRSTY CLLNGLTDRD LCELNECPLD PGGYFIINGS EKVLIAQEKM ATNTVYVFAK KDSKYAYTGE CRSCLENSSR PTSTIWVSML ARGGQGAKKS AIGQRIVATL PYIKQEVPII IVFRALGFVS DRDILEHIIY DFEDPEMMEM VKPSLDEAFV IQEQNVALNF IGSRGAKPGV TKEKRIKYAK EVLQKEMLPH VGVSDFCETK KAYFLGYMVH RLLLAALGRR ELDDRDHYGN KRLDLAGPLL AFLFRGMFKN LLKEVRIYAQ KFIDRGKDFN LELAIKTRII SDGLKYSLAT GNWGDQKKAH QARAGVSQVL NRLTFASTLS HLRRLNSPIG RDGKLAKPRQ LHNTLWGMVC PAETPEGHAV GLVKNLALMA YISVGSQPSP ILEFLEEWSM ENLEEISPAA IADATKIFVN GCWVGIHKDP EQLMNTLRKL RRQMDIIVSE VSMIRDIRER EIRIYTDAGR ICRPLLIVEK QKLLLKKRHI DQLKEREYNN YSWQDLVASG VVEYIDTLEE ETVMLAMTPD DLQEKEVAYC STYTHCEIHP SMILGVCASI IPFPDHNQSP RNTYQSAMGK QAMGVYITNF HVRMDTLAHV LYYPQKPLVT TRSMEYLRFR ELPAGINSIV AIASYTGYNQ EDSVIMNRSA VDRGFFRSVF YRSYKEQESK KGFDQEEVFE KPTRETCQGM RHAIYDKLDD DGLIAPGVRV SGDDVIIGKT VTLPENEDEL ESTNRRYTKR DCSTFLRTSE TGIVDQVMVT LNQEGYKFCK IRVRSVRIPQ IGDKFASRHG QKGTCGIQYR QEDMPFTCEG ITPDIIINPH AIPSRMTIGH LIECLQGKVS ANKGEIGDAT PFNDAVNVQK ISNLLSDYGY HLRGNEVLYN GFTGRKITSQ IFIGPTYYQR LKHMVDDKIH SRARGPIQIL NRQPMEGRSR DGGLRFGEME RDCQIAHGAA QFLRERLFEA SDPYQVHVCN LCGIMAIANT RTHTYECRGC RNKTQISLVR MPYACKLLFQ ELMSMSIAPR MMSV Sequence without tag. The proposed Strep-Tag is based on experience with the expression system. Our team may suggest an additional tag depending on the complexity of the protein. If you have a special request, please contact us.

Specificity: If you are looking for a specific domain and are interested in a partial protein or a different isoform, please contact us regarding an individual offer.

Characteristics: Key Benefits:

• Predefined custom protein - from design to production - by highly experienced protein experts.
• Protein expressed in mammalian cells and purified in one-step affinity chromatography
• The optimized expression system ensures reliability for intracellular, secreted and transmembrane proteins.
• State-of-the-art algorithm used for plasmid design (Gene synthesis).

This protein is a predefined protein and will be made for the first time for your order. Our experts in the lab try to ensure that you receive soluble protein.

If you are not interested in a full length protein, please contact us for individual protein fragments.

The big advantage of ordering our predefined custom proteins in comparison to ordering custom-made proteins from other companies is that there is no financial obligation in case the protein cannot be expressed or purified.

Application Details

Application Notes: We expect the protein to work for functional studies. As the protein has not been tested for functional studies yet we cannot offer a guarantee though.

Restrictions: For Research Use only

Handling

Format: Liquid

Buffer: The buffer composition is at the discretion of the manufacturer.

Handling Advice: Avoid repeated freeze-thaw cycles.

Storage: -80 °C

Storage Comment: Store at -80°C.

Expiry Date: 12 months

Target Details

Target: POLR2B (Polymerase (RNA) II (DNA Directed) Polypeptide B, 140kDa (POLR2B))

Alternative Name: POLR2B

Background: DNA-directed RNA polymerase II subunit RPB2 (EC 2.7.7.6) (3'-5' exoribonuclease) (EC 3.1.13.-) (DNA-directed RNA polymerase II 140 kDa polypeptide) (DNA-directed RNA polymerase II subunit B) (RNA polymerase II subunit 2) (RNA polymerase II subunit B2) (RNA-directed RNA polymerase II subunit RPB2) (EC 2.7.7.48),FUNCTION: Catalytic core component of RNA polymerase II (Pol II), a DNA-dependent RNA polymerase which synthesizes mRNA precursors and many functional non-coding RNAs using the four ribonucleoside triphosphates as substrates (PubMed:9852112, PubMed:27193682, PubMed:30190596) (By similarity). Pol II-mediated transcription cycle proceeds through transcription initiation, transcription elongation and transcription termination stages. During transcription initiation, Pol II pre-initiation complex (PIC) is recruited to DNA promoters, with focused-type promoters containing either the initiator (Inr) element, or the TATA-box found in cell-type specific genes and dispersed-type promoters that often contain hypomethylated CpG islands usually found in housekeeping genes. Once the polymerase has escaped from the promoter it enters the elongation phase during which RNA is actively polymerized, based on complementarity with the template DNA strand. Transcription termination involves the release of the RNA transcript and polymerase from the DNA (PubMed:9852112, PubMed:27193682, PubMed:30190596). Forms Pol II active center together with the largest subunit POLR2A/RPB1. Appends one nucleotide at a time to the 3' end of the nascent RNA, with POLR2A/RPB1 most likely contributing a Mg(2+)-coordinating DxDGD motif, and POLR2A/RPB1 most likely contributing a Mg(2+)-coordinating DxDGD motif, and POLR2B/RPB2 participating in the coordination of a second Mg(2+) ion and providing lysine residues believed to facilitate Watson-Crick base pairing between the incoming nucleotide and template base. Typically, Mg(2+) ions direct a 5' nucleoside triphosphate to form a phosphodiester bond with the 3' hydroxyl of the preceding nucleotide of the nascent RNA, with the elimination of pyrophosphate. The reversible pyrophosphorolysis can occur at high pyrophosphate concentrations (PubMed:9852112, PubMed:30190596) (By similarity). Can proofread the nascent RNA transcript by means of a 3' -> 5' exonuclease activity. If a ribonucleotide is mis-incorporated, backtracks along the template DNA and cleaves the phosphodiester bond releasing the mis-incorporated 5'-ribonucleotide (PubMed:8381534) (By similarity). {ECO:0000250|UniProtKB:A5PJW8, ECO:0000269|PubMed:27193682, ECO:0000269|PubMed:30190596, ECO:0000269|PubMed:8381534, ECO:0000269|PubMed:9852112}., FUNCTION: RNA-dependent RNA polymerase that catalyzes the extension of a non-coding RNA (ncRNA) at the 3'-end using the four ribonucleoside triphosphates as substrates. An internal ncRNA sequence near the 3'-end serves as a template in a single-round Pol II-mediated RNA polymerization reaction. May decrease the stability of ncRNAs that repress Pol II-mediated gene transcription. {ECO:0000269|PubMed:23395899}.

Molecular Weight: 133.9 kDa

UniProt: P30876

AlphaFold: P30876

Pathways: Regulatory RNA Pathways, DNA Damage Repair