歡迎進入菲律宾新利官网开户!
產品展示
首頁 > 產品展示 > > TriLink BioTechnologies > ARCA (Anti Reverse Cap Analog)

ARCA (Anti Reverse Cap Analog)

描述:體(ti) 外實驗的初始階段,絕大多數真核生物 mRNA 5' 端 m7G 帽結構可促進翻譯。對於(yu) 絕大多數 RNA,帽結構都可提高 RNA 的穩定性,降低其對核酸外切酶降解的敏感性,並促進 mRNA 起始複合體(ti) 的形成。一些具有 5' 端帽結構的原核 mRNA 也可以像真核 mRNA 一樣,能在真核生物無細胞蛋白合成體(ti) 係中獲得高效翻譯。另外,還發現在真核生物靶 RNA 的剪切過程同樣需要帽結構。

更新時間:2018-03-03
訪問次數:5492
廠商性質:代理商
詳情介紹

*也被稱為(wei) Anti-reverse Cap Analog (ARCA) ,即抗-反向帽類似物。

概述

體(ti) 外實驗的初始階段,絕大多數真核生物 mRNA 5' 端 m7G 帽結構可促進翻譯。對於(yu) 絕大多數 RNA,帽結構都可提高 RNA 的穩定性,降低其對核酸外切酶降解的敏感性,並促進 mRNA 起始複合體(ti) 的形成。一些具有 5' 端帽結構的原核 mRNA 也可以像真核 mRNA 一樣,能在真核生物無細胞蛋白合成體(ti) 係中獲得高效翻譯。另外,還發現在真核生物靶 RNA 的剪切過程同樣需要帽結構。
 

用 7 甲基 G 帽結構類似物,m7G(5' )ppp(5' )G (NEB#S1404) 作為(wei) 引物能在 SP6 RNA 聚合酶、T7 RNA 聚合酶和 T3 RNA 聚合酶作用下,轉錄出更多的帶帽RNA。因為(wei) 轉錄時,T7 RNA 聚合酶摻入的*個(ge) 堿基是 G,所以用 #S1405 或 #S1406 轉錄出帶有 A-帽結構的 RNA,就不能夠翻譯,但這對於(yu) 轉染和顯微注射實驗有很好的穩定性。Contrease 等已經建立了一套方法,以 m7G(5' )ppp(5' )G (NEB #S1404)或 m7G(5' )ppp(5' )A (NEB #S1405) 為(wei) 引物,利用 E. coli RNA 聚合酶,在體(ti) 外有效合成帶帽 RNA。


帽類似物有兩(liang) 個(ge) 3' 羥基基團使得它們(men) 可從(cong) 任一方向結合到 RNA 上。而抗-反向帽類似物(ARCA)3' OMethyl-m7G(5' )ppp(5' )G (NEB #S1411) 的一個(ge) 羥基被甲基化,隻能以 m7G 作為(wei) *個(ge) 堿基與(yu) RNA 結合,而這個(ge) 方向可以增強體(ti) 外翻譯。
 

 N-7003
ARCA (Anti Reverse Cap Analog)

 

key step in cellular mRNA processing is the addition of a 5’ cap structure, which is a 5'-5' triphosphate linkage between the 5' end of the RNA and a guanosine nucleotide. The cap is methylated enzymatically at the N-7 position of the guanosine to form mature mCAP.

 
When preparing synthetic mRNA, the cap is often added prior to use in order to stabilize the mRNA and significantly enhance translation. Using a 4:1 mixture of a cap analog to GTP in transcription reactions will cap 80% of the resulting mRNAs. If mCAP (pre-methylated CAP) is used, only half of the asymmetrical mCAP will insert in the functional orientation. ARCA can only insert in the correct orientation, resulting in mRNAs that are translated twice as efficiently. TriLink is the least expensive source of high quality ARCA. We also offer CAP and mCAP for more traditional capping reactions.
 
 

Anderson, B.R., Muramatsu, H., Jha, B.K., Silverman, R.H., Weissman, D., Kariko, K. Nucleoside modifications in RNA limit activation of 2'-5'-oligoadenylate synthetase and increase resistance to cleavage by RNase L (2011) Nucleic Acids Research, EPub Aug
         
Warren et al., Highly Efficient Reprogramming to Pluripotency and Directed Differentiation of Human Cells with Synthetic Modified mRNA, Cell Stem Cell (2010), doi:10.1016/j.stem.2010.08.012.
         
Anderson, B., Muramatsu, H., Nallagatla, S.R., Bevilacqua, P.C., Sansing, L.H., Weissman, D. & Kariko, K. Incorporation of pseudouridine into mRNA enhances translation by dimishing PKR activation (2010) Nucleic Acids Research, 38(17): 5884-5892.
         
Kariko, K., Buckstein, M., Ni, H. & Weissman, D. Suppression of RNA Recognition by Toll-like Receptors: The Impact of Nucleoside Modifiation and the Evolutionary Origin of RNA (2005). Immunity, 23(2), 165-175.
         
Peng ZH, Sharma V, Singleton SF, Gershon PD. Synthesis and application of a chain-terminating dinucleotide mRNA cap analog. (2002) Organic Letters. 4(2):161-4.
         
Konarska MM, Padgett RA, Sharp PA. Recognition of cap structure in splicing in vitro of mRNA precursors. (1984) Cell. 38(3):731-6.
         
Miura K. The cap structure in eukaryotic messenger RNA as a mark of a strand carrying protein information. (1981) Adv Biophys. 14:205-38.
         
Banerjee AK. 5'-terminal cap structure in eucaryotic messenger ribonucleic acids. (1980) Microbiol Rev. 44(2):175-205.
         
Rosenberg M, Paterson BM. Efficient cap-dependent translation of polycistronic prokaryotic mRNAs is restricted to the first gene in the operon. (1979) Nature. 21;279(5715):696-701.
         
Filipowicz W. Functions of the 5,-terminal m7G cap in eukaryotic mRNA. (1978) FEBS Lett. 96(1):1-11.
         
Zan-Kowalczewska M, Bretner M, Sierakowska H, Szczesna E, Filipowicz W, Shatkin AJ. Removal of 5'-terminal m7G from eukaryotic mRNAs by potato nucleotide pyrophosphatase and its effect on translation. (1977) Nucleic Acids Res. 4(9):3065-81.

 

N-7003-1 ARCA 1umole
N-7003-10 ARCA 10umoles
N-7003-5 ARCA 5umoles

留言框

  • 產品:

  • 您的單位:

  • 您的姓名:

  • 聯係電話:

  • 常用郵箱:

  • 省份:

  • 詳細地址:

  • 補充說明:

  • 驗證碼:

    請輸入計算結果(填寫阿拉伯數字),如:三加四=7