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C7762

αα-Chymotrypsin aus Rinderpankreas

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

Synonym(e):

α-chymotrypsin A and B, alpha-chymotrypsin

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Ihnen/SKUVerfügbarkeitPreis
5 mg
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€ 55,50
25 mg
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€ 81,70
100 mg
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€ 239,00

Über diesen Artikel

CAS-Nummer:
UNSPSC Code:
12352204
eCl@ss:
42010112
EC Number:
232-671-2
NACRES:
NA.54
MDL number:
EG-Nummer:
Specific activity:
≥40 units/mg protein

€ 55,50


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type

Type I-S

Quality Segment

form

essentially salt-free, lyophilized powder

specific activity

≥40 units/mg protein

mol wt

25 kDa

purified by

3× crystallization

solubility

1 mM HCl: soluble 2.0 mg/mL, clear

UniProt accession no.

storage temp.

−20°C

Gene Information

cow ... CTRB1(618826)

Application

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.[1] It has also been used to cleave pro-phenoloxidase in order to estimate total phenoloxidase in haemolymph.[2] 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 Actions

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+.

Preparation Note

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.

Analysis Note

Minimum 85% protein
Protein determined by E1%/280

Other Notes

Eine Einheit hydrolysiert 1.0 μmol BTEE pro min bei pH 7.8 und 25 °C.
Finden Sie mehr Informationen zu Chymotrypsin auf unserer 'Enzyme-Explorer'-Webseite.

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Dieser Artikel
C3142C41291134007
Gene Information

cow ... CTRB1(618826)

Gene Information

cow ... CTRB1(618826)

Gene Information

cow ... CTRB1(618826)

Gene Information

-

specific activity

≥40 units/mg protein

specific activity

≥40 units/mg protein

specific activity

≥40 units/mg protein

specific activity

-

form

essentially salt-free, lyophilized powder

form

essentially salt-free, lyophilized powder

form

lyophilized powder

form

liquid

UniProt accession no.

P00767

UniProt accession no.

P00767

UniProt accession no.

P00767

UniProt accession no.

-

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

-

mol wt

25 kDa

mol wt

25 kDa

mol wt

25 kDa

mol wt

-


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signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Lagerklasse

11 - Combustible Solids

wgk

WGK 1

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves



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Questions

1–5 of 5 Questions  
  1. What is the Department of Transportation shipping information for this product?

    1 answer
    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

      Helpful?

  2. How can solutions of  α-Chymotrypsin, Product C7762, be stored?

    1 answer
    1. Stock solutions prepared in 1 mM HCl, containing 2 mM calcium chloride can be stored at -20 °C for about one week.

      Helpful?

  3. What is the molecular weight of alpha-chymotrypsin from bovine pancreas (Product No. C7762)?

    1 answer
    1. The molecular weight of alpha chymotrypsin, reported in the literature, is approximately 25 kDa.  This information and the basic structure description of the enzyme can be found on our product information sheet (under Documents, above).

      Helpful?

  4. What is the pH optimum for the enzyme, α-Chymotrypsin, Product C7762?

    1 answer
    1. The pH optimum is between pH 7.5-8.5.

      Helpful?

  5. How should I prepare a solution of α-Chymotrypsin, Product C7762?

    1 answer
    1. It is recommended to reconstitute product C7762 in 1 mM hydrochloric acid containing 2 mM calcium chloride. The calcium functions as both a stabilizer (and possibly an activator) of the enzyme.

      Helpful?

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