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大鼠 CLPS / Colipase 基因全長cDNA ORF克隆 (表達載體), N-Myc 標籤

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Rat CLPS cDNA Clone產品資訊
註冊碼:NM_013139.1
cDNA基因長度:339bp
cDNA基因描述:Full length Clone DNA of Rattus norvegicus colipase, pancreatic with N terminal Myc tag.
基因別名:COLQ
分子種屬:Rat
載體:pCMV3-SP-N-Myc
Plasmid:
限制性酶切位點:
Tag序列:Myc Tag Sequence: GAGCAGAAACTCATCTCAGAAGAGGATCTG
序列資訊:
Sequencing primers:T7(TAATACGACTCACTATAGGG) BGH(TAGAAGGCACAGTCGAGG)
Promoter:Enhanced CMV mammalian cell promoter
Application:Stable or Transient mammalian expression
Antibiotic in E.coli:Kanamycin
Antibiotic in mammalian cell:Hygromycin
運輸條件:Each tube contains lyophilized plasmid.
儲存方法:The lyophilized plasmid can be stored at room temperature for three months.
Myc Tag Info

A myc tag can be used in many different assays that require recognition by an antibody. If there is no antibody against the studied protein, adding a myc-tag allows one to follow the protein with an antibody against the Myc epitope. Examples are cellular localization studies by immunofluorescence or detection by Western blotting.

The peptide sequence of the myc-tag is: N-EQKLISEEDL-C (1202 Da). It can be fused to the C-terminus and the N-terminus of a protein. It is advisable not to fuse the tag directly behind the signal peptide of a secretory protein, since it can interfere with translocation into the secretory pathway.

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研究背景

Colipase belongs to the colipase family. Structural studies of the complex and of colipase alone have revealed the functionality of its architecture. It is a small protein with five conserved disulphide bonds. Structural analogies have been recognised between a developmental protein, the pancreatic lipase C-terminal domain, the N-terminal domains of lipoxygenases and the C-terminal domain of alpha-toxin. Colipase can only be detected in pancreatic acinar cells, suggesting regulation of expression by tissue-specific elements. Colipase allows lipase to anchor noncovalently to the surface of lipid micelles, counteracting the destabilizing influence of intestinal bile salts. Without colipase the enzyme is washed off by bile salts, which have an inhibitory effect on the lipase. Colipase is a cofactor needed by pancreatic lipase for efficient dietary lipid hydrolysis. It binds to the C-terminal, non-catalytic domain of lipase, thereby stabilising as active conformation and considerably increasing the overall hydrophobic binding site.

參考資料
  • Davis RC, et al. (1991) Assignment of the human pancreatic colipase gene to chromosome 6p21.1 to pter. Genomics. 10(1):262-5.
  • Lowe ME. (1997) Structure and function of pancreatic lipase and colipase. Annu Rev Nutr. 17: 141-58.
  • Verger R, et al. (1999) Colipase: structure and interaction with pancreatic lipase. Biochim Biophys Acta. 1441(2-3):173-84.
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    貨號: RG80729-NM
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