T1426

Trypsin from bovine pancreas

TPCK Treated, essentially salt-free, lyophilized powder, ≥10,000 BAEE units/mg protein

• Synonim(y): Serine Protease 1
• Numer CAS: 9002-07-7
• Numer EC enzymu: 3.4.21.4 (BRENDA, IUBMB)
• Numer WE: 232-650-8
• Numer MDL: MFCD00082094
• Kod UNSPSC: 12352204
• NACRES: NA.54

Właściwości

• pochodzenie biologiczne: bovine pancreas
• Poziom jakości: 300
• klasa czystości: Proteomics Grade
• Postać: essentially salt-free, lyophilized powder
• aktywność właściwa: ≥10,000 BAEE units/mg protein
• masa cząsteczkowa: 23.8 kDa
• rozpuszczalność: hydrochloric acid: soluble 1 mM
• Zastosowanie: diagnostic assay manufacturing
• obecność zanieczyszczeń: Chymotrypsin ≤0.1 BTEE units/mg protein
• temp. przechowywania: −20°C

Opis

Zastosowanie

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 digestions. 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.

Działania biochem./fizjol.

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.

Komponenty

Trypsin consists of a single chain polypeptide of 223 amino acid residues, produced by the removal of the N-terminal hexapeptide from trypsinogen which is cleaved at the Lys - lle peptide bond. The sequence of amino acids is cross-linked by 6 disulfide bridges. This is the native form of trypsin, beta-trypsin. BETA-trypsin can be autolyzed, cleaving at the Lys - Ser residue, to produce alpha-trypsin. Trypsin is a member of the serine protease family.

Przestroga

Solutions in 1 mM HCl are stable for 1 year in aliquots and stored at -20°C. The presence of Ca²⁺ will also diminish the self-autolysis of trypsin and maintain its stability in solution. Trypsin will also retain most of its activity in 2.0 M urea, 2.0 M guanidine HCl, or 0.1% (w/v) SDS.

Definicja jednostki

One BAEE unit will produce a A₂₅₃ of 0.001 per minute at pH 7.6 at 25°C using BAEE as a substrate.

Uwaga dotycząca przygotowania

Soluble in 1 mM HCl at 1 mg/mL.
It is also TPCK-treated and dialyzed. Treatment with L-1-Tosylamide-2-phenylethyl chloromethyl ketone (TPCK) reduces the chymotrypsin activity which is usually present in trypsin.

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Informacja o środkach bezpieczeństwa

• Piktogramy: GHS08,GHS07
• Hasło ostrzegawcze: Danger
• Zwroty wskazujące rodzaj zagrożenia: H315,H319,H334,H335
• Zwroty wskazujące środki ostrożności: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Klasyfikacja zagrożeń: Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
• Organy docelowe: Respiratory system
• Kod klasy składowania: 11 - Combustible Solids
• Klasa zagrożenia wodnego (WGK): WGK 1
• Środki ochrony indywidualnej: dust mask type N95 (US), Eyeshields, Faceshields, Gloves