Carboxypeptidase A Protein, Human, Recombinant (His Tag)

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Carboxypeptidase A Protein, Human, Recombinant (His Tag): 製品情報

純度
> 97 % as determined by SDS-PAGE
内毒素
< 1.0 EU per μg of the protein as determined by the LAL method
活性
Measured by its ability to cleave the colorimetric peptide substrate Ac-Phe-Thiaphe-OH in the presence of 5,5'Dithiobis (2-nitrobenzoic acid) (DTNB). The specific activity is >3,500 pmoles/min/μg .
タンパク質の構築
A DNA sequence encoding the human CPA1 precursor (NP_001859.1) (Met 1-Tyr 419) was expressed with a C-terminal polyhistidine tag.
NP No.
発現ホスト
HEK293 Cells
Human
予測N末端
Lys 17
分子量
The secreted recombinant human CPA1 (pro form) consists of 414 amino acids and has a predicted molecular mass of 47 kDa. In SDS-PAGE under reducing conditions, it migrates with the apparent molecular mass of 43 kDa.
バッファー
Lyophilized from sterile PBS, pH 7.4
Please contact us for any concerns or special requirements.
Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization.
Please refer to the specific buffer information in the hard copy of CoA.
配送
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
安定性 & 保存条件
Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃
Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
再構成
A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.

Carboxypeptidase A Protein, Human, Recombinant (His Tag): 画像

Carboxypeptidase A Protein, Human, Recombinant (His Tag): 別名

CPA Protein, Human

Carboxypeptidase A 背景情報

Carboxypeptidase A1 (CPA1)is secreted as a pancreatic procarboxypeptidase, and cleaves the C-terminal amide or ester bond of peptides that have a free C-terminal carboxyl group, with the preference of residues with aromatic or branched aliphatic side chains. CPA1 comprises a signal peptide, a pro region and a mature chain, and can be activated after cleavage of the pro peptide. In contrast to procarboxypeptidase B which was always secreted by the pancreas as a monomer, procarboxypeptidase A occurs as a monomer and/or associated to one or two functionally different proteins, such as zymogen E, and is involved in zymogen inhibition. Three different forms of human pancreatic procarboxypeptidase A have been isolated.
完全な名称
carboxypeptidase A1 (pancreatic)
参考文献
  • Catasus, L. et al., 1992, Biochem. J. 287: 299-303.
  • Moulard, M. et al., 1990, FEBS. Lett. 261: 179-183.
  • Aloy, P. et al., 1998, Biol. Chem. 379: 149-155.
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