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Sequencing Grade Carboxypeptidase B
Sequencing Grade Carboxypeptidase B
Origin of place China
Model sequencing grade,sequence analysis,proteomics grade,
Supplier ShangHai YaXin Biotechnology Company
Price 590RMB/mg
Hits 987
Update 2/11/2018
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Sequencing Grade Carboxypeptidase B

Catalog Number:SRCPB01


Storage temperature: 2-8鈩

Source: Sequencing grade recombinant carboxypeptidase B is a genetically engineered protein expressed in E.coli 

Protein Sequence:The amino acid sequence of recombinant carboxypeptidase B is identical to rat carboxypeptidase B



Carboxypeptidase B catalyzes hydrolysis of the basic amino acids lysine, arginine and histidine from the C-terminal end of polypeptides. The molecular weight is 33.8kD, pI is 6.0 and the optimum pH is 7.5-9.0. Carboxypeptidase B is competitively inhibited by arginine and lysine. The enzyme is also inhibited by metal chelating agents, e.g., EDTA.




Recombinant E. coli


White or off white, or yellowish powder

Specific activity

≥200 units/mg pro.


Single major band

Molecular Weight(SDS-PAGE)

 33.8±3.4 kDa


≥ 95%



Prepare 1-10mg/ml carboxypeptidase B with sterile water or 25mM Tris-HCl pH 7.65. The ratio to aimed protein is 1:50 to 1:1000 (w/w), the optimum pH is pH 7.5-9.0. 



Stability of storage: Sequencing grade carboxypeptidase B lyophilized should be stored under 2-8鈩 in sealed container.

It is stable within 24 months.

After dissolved with sterile water or 25mM Tris-HCl, it should be stored under -20鈩. 

Avoid repeated freezing and thawing.

Stability of transport: The product is stable by blue ice insulation transport.



  1. Sequence grade recombinant protein: high specificity,good stability.
  2. Animal origin free: Sequencing grade carboxypeptidase B is no exogenous virus contamination,and any animal origin material is not used in the production process.
  3. Stable quality: Mass production can ensure stable and continuous batch production.It is no difference between the batch and the product quality is stable.
  4. High purity: Higher specific activity.Host protein residues is less than the limits of biological products.
  5. Lyophilized powder: The product is lyophilized powder and is easy to store and transport.
  6. Compliance with regulatory requirements: Production equipment and production environment comply with relevant regulatory requirements, and the production process is in full compliance with NSF ISO 9001: 2008 quality system and GMP guidelines.
  7. Complete quality documents: we can provide relevant regular support files in according to customers’ requirement.



1) Determination of protein C-terminal basic amino acids such as arginine, lysine and histidine.

2) detection of antibody basic peak.


Shanghai Yaxin Biotechnology Co. Ltd. is a biotech company founded in 2008 that focuses on the research and the production of recombinant proteins. Shanghai YaxinBio,located in Shanghai Juke Biotech Park, is ISO 9001 registered company since 2009.

Our main products are Animal Origin Free recombinant carboxypeptidase B and recombinant trypsin, which are of high importance for the production of human recombinant insulin.YaxinBio recombinant carboxypeptidase B and recombinant trypsin have no trace of other contaminating enzyme activities or enzyme inhibitors. They have been successfully used in the production process of recombinant insulin by several companies. Recombinant Trypsin can also be used in the process of cell culture.

Shanghai YaxinBio continuously strives to bring to its worldwide customers the best recombinant protein products. We will continue strengthen our product management and our internal system to meet the demands of biotech companies and scientists in the field of life sciences.

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