中文名 | FLAG Peptide |
英文名 | DYKDDDDK Peptide |
别名 | DDDDK肽 FLAG PEPTIDE 试剂 化合物FLAG PEPTIDE |
英文别名 | PEPTIDE FLAG Peptide DYKDDDDK Peptide FLAG tag Peptide L-LYSINE, L-Α-ASPARTYL-L-TYROSYL-L-LYSYL-L-Α-ASPARTYL-L-Α-ASPARTYL-L-Α-ASPARTYL-L-Α-ASPARTYL- (2S)-6-amino-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-6-amino-2-[[(2S)-2-[[(2S)-2-amino-3-carboxypropanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]hexanoyl]amino]-3-carboxypropanoyl]amino]-3-carboxypropanoyl]amino]-3-carboxypropanoyl]amino]-3-carboxypropanoyl]amino]hexanoic acid |
CAS | 98849-88-8 |
化学式 | C41H60N10O20 |
分子量 | 1012.97 |
密度 | 1.470±0.06 g/cm3 (20 ºC 760 Torr) |
溶解度 | H2O: 50 mg/mL母液保存:分装冻存,避免反复冻融;-20℃,1个月;-80℃,6个月 |
存储条件 | Keep in dark place,Sealed in dry,Store in freezer, under -20°C |
外观 | 冻干粉 |
体外研究 | Fusion protein technology has become an important tool for solving numerous problems linked to recombinant protein production. The properties of the additional tag facilitate identification and provide a one-step purification procedure of the fusion protein by passing cell extracts or supernatants through columns of an appropriate matrix. FLAG peptide allows elution under non-denaturing conditions. Several antibodies against FLAG peptide have been developed. One antibody, M1, binds the peptide in the presence of bivalent metal cations, preferably Ca 2+ . Elution is effected by chelating agents. Another strategy is competitive elution with excess of free FLAGe peptide. Antibodies M2 and M5 are applied in this procedure. The Flag-tag is first described as a calcium-dependent epitope of a monoclonal antibody. It is a highly acidic octapeptide which can be N-terminally fused to the protein of interest. As a very hydrophilic peptide the Flag–tag has a high surface probability. Flag-fusion proteins can be captured by an immunoaffinity column in the presence of Ca 2+ and eluted byEDTA at low concentrations, neutral pH and thus, nearly physiological conditions. |
参考资料 展开查看 | 1. Einhauer A, et al. The FLAG peptide, a versatile fusion tag for the purification of recombinant proteins. J Biochem Biophys Methods. 2001 Oct 30;49(1-3):455-65.2. Schuster M, et al. Protein expression in yeast; comparison of two expression strategies regarding proteinmaturation. J Biotechnol. 2000 Dec 28;84(3):237-48. |
1mg | 5mg | 10mg | |
---|---|---|---|
1 mM | 0.987 ml | 4.936 ml | 9.872 ml |
5 mM | 0.197 ml | 0.987 ml | 1.974 ml |
10 mM | 0.099 ml | 0.494 ml | 0.987 ml |
5 mM | 0.02 ml | 0.099 ml | 0.197 ml |
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