Carboxypeptidase A Protein, Mouse, Recombinant (His Tag)

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Carboxypeptidase A Protein, Mouse, Recombinant (His Tag): Product Information

Purity
> 96 % as determined by SDS-PAGE
Endotoxin
< 1.0 EU per μg of the protein as determined by the LAL method
Activity
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 >6,000 pmoles/min/μg .
Protein Construction
A DNA sequence encoding the mouse CPA1 (NP_079626.2) (Met 1-Tyr 419) precusor was expressed with a C-terminal polyhistidine tag.
Accession#
Expressed Host
HEK293 Cells
Species
Mouse
Predicted N Terminal
Asn 17
Molecule Mass
The secreted recombinant pro form of mouse CPA1 comprises 414 amino acids and has a calculated molecular mass of 47 kDa. The recombinant protein migrates as an approximately 42 kDa band in SDS-PAGE under reducing conditions.
Formulation
Lyophilized from sterile 20mM Tris, 150mM NaCl, pH 7.5
1. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
2. Please contact us for any concerns or special requirements.
Please refer to the specific buffer information in the hard copy of CoA.
Shipping
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.
Stability & Storage
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.
Reconstitution
A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.

Carboxypeptidase A Protein, Mouse, Recombinant (His Tag): Images

Carboxypeptidase A Protein, Mouse, Recombinant (His Tag): Alternative Names

0910001L12Rik Protein, Mouse; Cpa Protein, Mouse

Carboxypeptidase A Background Information

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.
Full Name
carboxypeptidase A1 (pancreatic)
References
  • 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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