Trypsin from porcine pancreas

Name: Trypsin from porcine pancreas
Brand: SIGMA

~1500 U/mg

로그인조직 및 계약 가격 보기

모든 사진(1)

About This Item

CAS Number:

9002-07-7

EC 번호:

3.4.21.4 (BRENDA, IUBMB)

EC Number:

232-650-8

MDL number:

MFCD00082094

UNSPSC 코드:

12352204

NACRES:

NA.54

양식

powder

특이 활성도

~1500 U/mg

분자량

23.8 kDa

외래 활성

chymotrypsin ≤0.1%

저장 온도

2-8°C

유사한 제품을 찾으십니까? 방문 제품 비교 안내

애플리케이션

For trypsin digestion of peptides, use a ratio of about 1:100 to 1:20 for trypsin:peptide. The typical use for this product is in removing adherent cells from a culture surface. The concentration of trypsin necessary to dislodge cells from their substrate is dependent primarily on the cell type and the age of the culture. Trypsins have also been used for the re-suspension of cells during cell culture, in proteomics research for digestion of proteins and in various in-gel digestionsns†. Additional applications include assessing crystallization by membrane-based techniques and in a study to determine that protein folding rates and yields can be limited by the presence of kinetic traps.

생화학적/생리학적 작용

Trypsin cleaves peptides on the C-terminal side of lysine and arginine residues. The rate of hydrolysis of this reaction is slowed if an acidic residue is on either side of the cleavage site and hydrolysis is stopped if a proline residue is on the carboxyl side of the cleavage site. The optimal pH for trypsin activity is 7-9. Trypsin can also act to cleave ester and amide linkages of synthetic derivatives of amino acids. EDTA is added to trypsin solutions as a chelating agent that neutralizes calcium and magnesium ions that obscure the peptide bonds on which trypsin acts. Removing these ions increases the enzymatic activity.

Serine protease inhibitors, including DFP, TLCK, APMSF, AEBSEF, and aprotinin, amongst others, will inhibit Trypsin.

단위 정의

1 U corresponds to the amount of enzyme which increases the absorbance at 253 nm by 0.001 per minute at pH 7.6 and 25°C (N-benzoyl-L-arginine ethyl ester, Cat. No. 12880, as substrate)

One BAEE unit will produce a ΔA₂₅₃ of 0.001 per min at pH 7.6 at 25° C using BAEE as substrate. One BTEE unit = 320 ATEE units. Reaction volume = 3.2 mL (1 cm light path).