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  4. Recombinant Escherichia coli Peptide chain release factor 2 (prfB)

Recombinant Escherichia coli Peptide chain release factor 2 (prfB)

  • 中文名稱：
    大腸桿菌prfB重組蛋白
  • 貨號：
    CSB-YP362014ENV
  • 規格：
  • 來源：
    Yeast
  • 其他：
  • 中文名稱：
    大腸桿菌prfB重組蛋白
  • 貨號：
    CSB-EP362014ENV-B
  • 規格：
  • 來源：
    E.coli
  • 共軛：
    Avi-tag Biotinylated

    E. coli biotin ligase (BirA) is highly specific in covalently attaching biotin to the 15 amino acid AviTag peptide. This recombinant protein was biotinylated in vivo by AviTag-BirA technology, which method is BriA catalyzes amide linkage between the biotin and the specific lysine of the AviTag.

  • 其他：
  • 中文名稱：
    大腸桿菌prfB重組蛋白
  • 貨號：
    CSB-BP362014ENV
  • 規格：
  • 來源：
    Baculovirus
  • 其他：
  • 中文名稱：
    大腸桿菌prfB重組蛋白
  • 貨號：
    CSB-MP362014ENV
  • 規格：
  • 來源：
    Mammalian cell
  • 其他：

產品詳情

  • 純度：
    >85% (SDS-PAGE)
  • 基因名：
    prfB
  • Uniprot No.：
  • 別名：
    prfB; supK; b2891; JW5847; Peptide chain release factor RF2; RF-2
  • 種屬：
    Escherichia coli (strain K12)
  • 蛋白長度：
    full length protein
  • 表達區域：
    1-365
  • 氨基酸序列
    MFEINPVNNR IQDLTERSDV LRGYLDYDAK KERLEEVNAE LEQPDVWNEP ERAQALGKER SSLEAVVDTL DQMKQGLEDV SGLLELAVEA DDEETFNEAV AELDALEEKL AQLEFRRMFS GEYDSADCYL DIQAGSGGTE AQDWASMLER MYLRWAESRG FKTEIIEESE GEVAGIKSVT IKISGDYAYG WLRTETGVHR LVRKSPFDSG GRRHTSFSSA FVYPEVDDDI DIEINPADLR IDVYRTSGAG GQHVNRTESA VRITHIPTGI VTQCQNDRSQ HKNKDQAMKQ MKAKLYELEM QKKNAEKQAM EDNKSDIGWG SQIRSYVLDD SRIKDLRTGV ETRNTQAVLD GSLDQFIEAS LKAGL
  • 蛋白標簽：
    Tag?type?will?be?determined?during?the?manufacturing?process.
    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.
  • 產品提供形式：
    Lyophilized powder
    Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
  • 復溶：
    We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
  • 儲存條件：
    Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
  • 保質期：
    The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
    Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
  • 貨期：
    Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
    Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
  • 注意事項：
    Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
  • Datasheet ：
    Please contact us to get it.

產品評價

靶點詳情

  • 功能：
    Peptide chain release factor 2 directs the termination of translation in response to the peptide chain termination codons UGA and UAA. Acts as a peptidyl-tRNA hydrolase. In the presence of truncated mRNA in the 70S ribosome, ArfA and RF2 interact such that the GGQ peptide hydrolysis motif of RF2 rises into the peptidyl-transferase center and releases the ribosome. Recruited by ArfA to rescue stalled ribosomes in the absence of a normal stop codon.
  • 基因功能參考文獻：
    1. both RF1 binding and RF2 binding are sufficient to shift the population of posthydrolysis ribosome complexes from primarily the rotated to the nonrotated state only when a cognate stop codon is present in the A-site. PMID: 29499110
    2. The structures demonstrate how ArfA 'senses' the vacant mRNA tunnel and activates RF2 to mediate peptide release without a stop codon, allowing stalled ribosomes to be recycled. PMID: 28300532
    3. The authors characterized the ArfA pathway of non-productive translation complexe resolution in vitro and identified RF2 as a factor that cooperates with ArfA to hydrolyse peptidyl-tRNAs located in the P-site of the stalled ribosome. PMID: 22857598
    4. RF2 binds to stalled ribosomes only in the presence of ArfA, demonstrating that ArfA recruits RF2 into the A site of the ribosome to facilitate peptidyl-tRNA hydrolysis. PMID: 22922063
    5. Mutations at the two positions on 23S rRNA did not affect aminoacyl-tRNA (aa-tRNA) accommodation, peptide bond formation, or the fidelity of aa-tRNA selection, but impaired RF2-catalyzed peptide release. PMID: 20668033
    6. prfB encoding RF2 is a new member of the polyamine modulon PMID: 16476727
    7. L11 mutations located on the surface of two domains of L11 affect the interaction of L11 with RF1 and RF2 thereby leading to an altered translation termination. PMID: 16556224
    8. All cognate ribosomal E-site duplex interactions are adequate for any translational role, including effects on reading frame maintenance during RF-2 programmed frameshifting. PMID: 17660276
    9. RF1 and RF2 are methylated on the Gln residue of a universally conserved tripeptide motif GGQ, which interacts with the peptidyl transferase center of the large ribosomal subunit, triggering hydrolysis of the ester bond in peptidyl-tRNA PMID: 17932046
    10. analysis of the direct relationship between cumulative signal phase and reading frame of prfB in E. coli PMID: 17946637

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  • 亞細胞定位：
    Cytoplasm.
  • 蛋白家族：
    Prokaryotic/mitochondrial release factor family
  • 數據庫鏈接：


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