C7762

αα-Chymotrypsin aus Rinderpankreas

Type I-S, essentially salt-free, lyophilized powder

• Synonym(e): α-chymotrypsin A and B, alpha-chymotrypsin
• CAS Number: 9004-07-3
• EG-Nummer: 3.4.21.1 (BRENDA, IUBMB)
• EG-Nummer: 232-671-2
• MDL-Nummer: MFCD00130481
• UNSPSC-Code: 12352204
• eCl@ss: 42010112
• NACRES: NA.54

Eigenschaften

• Typ: Type I-S
• Qualitätsniveau: 200
• Form: essentially salt-free, lyophilized powder
• Spezifische Aktivität: ≥40 units/mg protein
• Mol-Gew.: 25 kDa
• Aufgereinigt durch: 3× crystallization
• Löslichkeit: 1 mM HCl: soluble 2.0 mg/mL, clear
• UniProt-Hinterlegungsnummer: P00767
• Lagertemp.: −20°C
• Angaben zum Gen: cow ... CTRB1(618826)

Beschreibung

Anwendung

α-Chymotrypsin from bovine pancreas has been used in a study to investigate protein extraction by Winsor-III microemulsion systems. α-Chymotrypsin from bovine pancreas has also been used in a study to investigate a new specific fullerene-based fluorescent probe for trypsin.

The product has been used to investigate the inhibitory effect of several ether oligomers against the enzyme. It has also been used to cleave pro-phenoloxidase in order to estimate total phenoloxidase in haemolymph. Furthermore, the enzyme has been used as a positive control in chymotrypsin assays using salivary gland and anterior midgut extracts of Deraeocoris nigritulus.

Biochem./physiol. Wirkung

Ein Serin-Protease, die Peptidbindungen mit aromatischen oder großen hydrophoben Seitenketten (Tyr, Trp, Phe, Met, Leu) am Carboxylende der Bindung hydrolysiert.

α-Chymotrypsin is a serine peptidase and has 241 amino acid residues contained in three polypeptide chains (A chain-13 residues, B chain-131 residues, and C chain-97 residues) linked by disulfide bridges. Molecular weight of this enzyme is found to be 25 kDa. The pI is 8.75. It selectively hydrolyzes peptide bonds on the C-terminal side of tyrosine, phenylalanine, tryptophan, and leucine. Ca²⁺ activates and stabilizes the enzyme. The enzyme is inhibited by diisopropyl fluorophosphate (DFP), phenylmethanesulfonyl fluoride (PMSF), N-p-tosyl-L-phenylalanine chloromethyl ketone (TPCK), chymostatin, aprotinin, α1-antitrypsin, and α2-macroglobulin, as well as 10 mM of Cu²⁺ and Hg²⁺.

Einheitendefinition

Eine Einheit hydrolysiert 1.0 μmol BTEE pro min bei pH 7.8 und 25 °C.

Angaben zur Herstellung

Prepared free of autolysis products and low molecular weight contaminants.

The powder may be reconstituted in 1 mM HCl at 2 mg/mL concentration to form a clear solution.

Hinweis zur Analyse

Minimum 85% protein

Protein determined by E1%/280

Sonstige Hinweise

Finden Sie mehr Informationen zu Chymotrypsin auf unserer 'Enzyme-Explorer'-Webseite.

Sicherheitshinweise

• Piktogramme: GHS08,GHS07,GHS09
• Signalwort: Danger
• H-Sätze: H302,H315,H319,H334,H335,H400
• P-Sätze: P261 - P264 - P273 - P301 + P312 - P302 + P352 - P305 + P351 + P338
• Gefahreneinstufungen: Acute Tox. 4 Oral - Aquatic Acute 1 - Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
• Zielorgane: Respiratory system
• Lagerklassenschlüssel: 11 - Combustible Solids
• WGK: WGK 1
• Persönliche Schutzausrüstung: dust mask type N95 (US), Eyeshields, Faceshields, Gloves