HA Peptide TFA

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HA Peptide TFA  纯度: 99.21%

HA Peptide (TFA) 是来自人类流感血凝素 (HA) 的由九个氨基酸组成的多肽。HA Peptide (TFA) 广泛用于细胞生物学和生物化学中分离，纯化，检测和追踪目标蛋白。

HA Peptide TFA 

HA Peptide TFA Chemical Structure

规格 价格 是否有货 数量
5 mg ￥900 In-stock
10 mg ￥1500 In-stock
50 mg   询价  
100 mg   询价  

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HA Peptide TFA 相关产品

•相关化合物库:

  • Bioactive Compound Library Plus
  • Immunology/Inflammation Compound Library
  • Peptide Library

生物活性

HA Peptide (TFA) is a nine amino acids peptide derived from the human influenza hemagglutinin (HA). HA Peptide (TFA) is extensively used to isolate, purify, detect, and track the protein of interest in cell biology and biochemistry[1][2][3].

体外研究
(In Vitro)

HA Peptide is a highly immunoreactive tag generally used for the separation of tagged proteins from cell culture supernatants and cell lysate under neutral pH conditions and thus are handy tools for coimmunoprecipitation but are also easily detected via western blot. HA Peptide is small and thus unlikely to interfere with the bioactivity and function of the fusion partner proteins. HA Peptide comes from human influenza hemagglutinin (HA) corresponding to amino acids 98-106 and is a strong immunoreactive epitope making it popular to isolate, purify, detect, and track the protein of interest. The recombinant HA-tagged proteins can be separated by highly specific anti-HA monoclonal antibody that is covalently immobilized on resin. The HA-tagged proteins can be eluted by mild elution approach with HA epitope at 1 mg/mL in TBS. On the other hand, three chemical elution options are available: 0.1 M glycine (pH 2-2.8), 3 M NaSCN, or 50 mM NaOH[1]. The nucleotide sequences encoding an N-terminal HA Peptide in the mammalian expression vectors is an essential element for the T7 promoter-driven expression in E. coli even without trans-acting T7 RNAP[2]. Research results suggest that HA Peptide is cleaved by caspase 3/7, and HA Peptide cleavage results in a total loss of immunoreactivity. Observations indicate that the use of HA to tag proteins and constructs to study cell death–related and apoptotic mechanisms can result in serious artifacts[3].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
分子量

1216.19

Formula

C55H68F3N9O19
Sequence Shortening

YPYDVPDYA
运输条件

Room temperature in continental US; may vary elsewhere.
储存方式

Sealed storage, away from moisture

Powder -80°C 2 years
-20°C 1 year

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
Solvent & Solubility
In Vitro: 

H2O

Peptide Solubility and Storage Guidelines:

1.  Calculate the length of the peptide.

2.  Calculate the overall charge of the entire peptide according to the following table:

  Contents Assign value
Acidic amino acid Asp (D), Glu (E), and the C-terminal -COOH. -1
Basic amino acid Arg (R), Lys (K), His (H), and the N-terminal -NH2 +1
Neutral amino acid Gly (G), Ala (A), Leu (L), Ile (I), Val (V), Cys (C), Met (M), Thr (T), Ser (S), Phe (F), Tyr (Y), Trp (W), Pro (P), Asn (N), Gln (Q) 0

3.  Recommended solution:

Overall charge of peptide Details
Negative (<0) 1.  Try to dissolve the peptide in water first.
2.  If water fails, add NH4OH (<50 μL).
3.  If the peptide still does not dissolve, add DMSO (50-100 μL) to solubilize the peptide.
Positive (>0) 1.  Try to dissolve the peptide in water first.
2.  If water fails, try dissolving the peptide in a 10%-30% acetic acid solution.
3.  If the peptide still does not dissolve, try dissolving the peptide in a small amount of DMSO.
Zero (=0) 1.  Try to dissolve the peptide in organic solvent (acetonitrile, methanol, etc.) first.
2.  For very hydrophobic peptides, try dissolving the peptide in a small amount of DMSO, and then dilute the solution with water to the desired concentration.
参考文献

  • [1]. Zhao X, et, al. Several affinity tags commonly used in chromatographic purification. J Anal Methods Chem. 2013;2013:581093.

    [2]. Moon JM, et, al. A new idea for simple and rapid monitoring of gene expression: requirement of nucleotide sequences encoding an N-terminal HA tag in the T7 promoter-driven expression in E. coli. Biotechnol Lett. 2012 Oct;34(10):1841-6.

    [3]. Schembri L, et, al. The HA tag is cleaved and loses immunoreactivity during apoptosis. Nat Methods. 2007 Feb;4(2):107-8.

  • [1]. Zhao X, et, al. Several affinity tags commonly used in chromatographic purification. J Anal Methods Chem. 2013;2013:581093.

    [2]. Moon JM, et, al. A new idea for simple and rapid monitoring of gene expression: requirement of nucleotide sequences encoding an N-terminal HA tag in the T7 promoter-driven expression in E. coli. Biotechnol Lett. 2012 Oct;34(10):1841-6.

    [3]. Schembri L, et, al. The HA tag is cleaved and loses immunoreactivity during apoptosis. Nat Methods. 2007 Feb;4(2):107-8.