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RCPB01 CAS 9025-24-5 Carboxypeptidase B for Mass Spectrometry

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RCPB01 CAS 9025-24-5 Carboxypeptidase B for Mass Spectrometry

RCPB01 CAS 9025-24-5 Carboxypeptidase B for Mass Spectrometry
RCPB01 CAS 9025-24-5 Carboxypeptidase B for Mass Spectrometry

Large Image :  RCPB01 CAS 9025-24-5 Carboxypeptidase B for Mass Spectrometry

Product Details:
Place of Origin: China, Shanghai
Brand Name: YAXINBIO
Certification: NQA ISO 9001:2015
Model Number: RCPB01
Payment & Shipping Terms:
Minimum Order Quantity: 10mg
Price: 150$/10mg
Packaging Details: ice packaging
Delivery Time: 8 days
Payment Terms: T/T
Supply Ability: 1000g per week
Detailed Product Description
Product: Recombinant Carboxypeptidase B Manufacturer: YaxinBio
Source: E. Coli Purified By: HPLC
Physical Form: White Or White-like Lyophilized Powder Additives: Tris Salts, NaCl Salts And Carbohydrates
Protein Content: 35% ~ 50% Specific Activity: Specific Activity
High Light:

staphylococcal protease


C-terminal lysine

RCPB01 CAS 9025-24-5 Carboxypeptidase B for Mass Spectrometry





Carboxypeptidase B catalyzes hydrolysis of the basic amino acids lysine, arginine and histidine from the C-terminal end of polypeptides. The molecular weight is 34,500 daltons, the optimum pH is 8.0, and pI is 6.0. Carboxypeptidase B is competitively inhibited by arginine and lysine. The enzyme is also inhibited by metal chelating agents, e.g., EDTA. Recombinant Carboxypeptidase B is expressed in E.Coli and purified by high pressure liquid chromatography. There is no trace of other enzyme (such as carboxypeptidase A and chymotrypsin) activity. No protease inhibitors such as PMSF are present in the preparation.

CAS: 9025-24-5

Source: Expressed in E. Coli.




Animal origin free:YaxinBio recombinant carboxypeptidase B belongs to the AOF level 3, eliminate the risk of virus presence, or of any other potential adventitious agents found in animal-derived carboxypeptitase B

Stability:A sterile recombinant carboxypeptidase B lyophilized eliminates the risk of contamination and decreases the chances of activity loss in the process of transport and storage.

High purity:

1) Recombinant carboxypeptidase B provides increased specific activity and eliminates contaminating proteases activities found in extracted enzymes with lower purity level.

2) No other contaminating proteases such as chymotrypsin and carboxypeptidase A.

3)Less than 10ppm of recombinant trypsin.


Main Features



E. Coli

Purified by



White or white-like or yellowish lyophilized


Tris salts, NaCl salts and carbohydrates

Protein content

35% ~ 60%

Specific activity

 ≥170 units/mg pro.


Single main band on SDS-PAGE



Contaminant activity

Less than 10 ppm of recombinant trypsin.

Unit Definition:One Unit of carboxypeptidase B activity hydrolyzes one micromole of   

                   hippuryl-L-arginine per minute at 25℃, pH 7.65.


Recommend Usage


To 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 7-9.


Storage Instructions


Recommend recombinant carboxypeptidase B lyophilized should be stored under 2℃-8℃ in sealed container. It is stable within 24 months.After dissolved, it should be stored under -20℃, It is stable within 24 months and above 90% activity remained after 10 times repeated freezing and thawing.


Web:http://www.yaxinbio.com     Email:Zhaozhi@yaxinbio.com


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Tel: +8613482039151

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