It is recommended to reconstitute Product No. C3142 in 1 mM hydrochloric acid containing 2 mM calcium chloride. The calcium functions as both a stabilizer (and possibly an activator) of the enzyme.
C3142
α-Chymotrypsin from bovine pancreas
(TLCK treated to inactivate residual tryspin activity), Type VII, essentially salt-free, lyophilized powder, ≥40 units/mg protein
Synonyma:
TLCK-Chymotrypsin
Přihlásit pro zobrazení organizačních a smluvních cen.
Vybrat velikost
Změnit zobrazení
| Velikost balení | Skladová položka | Dostupnost | Cena |
|---|---|---|---|
| 10 mg | Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti. | 1 840,00 Kč | |
| 25 mg | Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti. | 3 050,00 Kč | |
| 100 mg | Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti. | 9 190,00 Kč |
O této položce
Číslo CAS:
UNSPSC Code:
12352204
eCl@ss:
42010112
EC Number:
232-671-2
NACRES:
NA.54
MDL number:
Specific activity:
≥40 units/mg protein
1 840,00 Kč
Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti.
Technický servis
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Dovolte nám, abychom vám pomohliQuality Level
type
Type VII
form
essentially salt-free, lyophilized powder
specific activity
≥40 units/mg protein
mol wt
25 kDa
solubility
1 mM HCl: soluble 10 mg/mL, clear
UniProt accession no.
storage temp.
−20°C
Gene Information
cow ... CTRB1(618826)
Application
α-Chymotrypsin from Sigma has been used to determine the crystal structures of two homologous inhibitors (pars intercerebralis major peptide-C and pars intercerebralis major peptide-D2v) from the insect Locusta migratoria by forming a complex with the enzyme.[1]
Biochem/physiol Actions
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. Its 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, α2-macroglobulin, 10 mM Cu2+ and Hg2+.
A serine protease that hydrolyzes peptide bonds with aromatic or large hydrophobic side chains (Tyr, Trp, Phe, Met, Leu) on the carboxyl end of the bond.
Preparation Note
TLCK treatment inactivates trypsin which may be present in chymotrypsin, without affecting the chymotrypsin activity.
Analysis Note
Protein determined by A1%/280
Other Notes
One unit will hydrolyze 1.0 μmole of BTEE per min at pH 7.8 at 25 °C.
View more information on chymotrypsin at www.sigma-aldrich.com/enzymeexplorer
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Tato položka | |||
|---|---|---|---|
| Gene Information cow ... CTRB1(618826) | Gene Information cow ... CTRB1(618826) | Gene Information cow ... CTRB1(618826) | Gene Information cow ... CTRB1(618826) |
| 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 lyophilized powder | form essentially salt-free, lyophilized powder | form salt-free, lyophilized powder |
| storage temp. −20°C | storage temp. −20°C | storage temp. −20°C | storage temp. 2-8°C |
| UniProt accession no. | UniProt accession no. | UniProt accession no. | UniProt accession no. |
| solubility 1 mM HCl: soluble 10 mg/mL, clear | solubility - | solubility 1 mM HCl: soluble 2.0 mg/mL, clear | solubility - |
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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
Skladovací třída
11 - Combustible Solids
wgk
WGK 1
ppe
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
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Protokoly
Follow our procedure for the determination of a chymotrypsin activity. This enzymatic assay of alpha chymotrypsin guides you through the entire process and necessary calculations.
Sortimentní položky
Analytický enzym chymotrypsin: Chymotrypsin je produkován v acinárních buňkách slinivky břišní jako neaktivní prekurzor, chymotrypsinogen.
Související obsah
Analytical Enzyme Chymotrypsin: Chymotrypsin is produced in the acinar cells of the pancreas as the inactive precursor, chymotrypsinogen.
Product Information Sheet
M Gestin et al.
Digestive diseases and sciences, 42(6), 1302-1311 (1997-06-01)
A specific method for pancreatic elastase II activity analysis was developed. True elastase II activity could be discriminated from that of elastase I and chymotrypsin. The postnatal development of four pancreatic proteases in the duodenal juice of children and in
Zhenyao Luo et al.
FEBS letters, 592(13), 2341-2350 (2018-06-02)
The bacterium Streptococcus pneumoniae (the pneumococcus) is a major human pathogen that requires Zn2+ for its survival and virulence in the host environment. Polyhistidine triad protein D (PhtD) has a known role in pneumococcal Zn2+ homeostasis. However, the mechanistic basis
Tommi Kotila et al.
Nature communications, 13(1), 3442-3442 (2022-06-16)
Actin polymerization generates forces for cellular processes throughout the eukaryotic kingdom, but our understanding of the 'ancient' actin turnover machineries is limited. We show that, despite > 1 billion years of evolution, pathogenic Leishmania major parasite and mammalian actins share the same
Globální číslo obchodní položky
| Skladová položka | GTIN |
|---|---|
| C3142-25MG | 04061833485460 |
| C3142-100MG | 04061833485446 |
| C3142-10MG | 04061833485453 |
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How do you recommend preparing a solution of Product No. C3142?
1 answer-
Helpful?
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What is the molecular weight of alpha-chymotrypsin from bovine pancreas (Product No. C3142)?
1 answer-
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) at our website.
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How can solutions of alpha-chymotrypsin (Product No. C3142) be stored?
1 answer-
Stock solutions prepared in 1 mM HCl, containing 2 mM calcium chloride, can be stored at -20 ° for about one week.
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What is the Department of Transportation shipping information for this product?
1 answer-
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.
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What is the pH optimum for the enzyme, Product No. C3142?
1 answer-
The pH optimum for alpha-chymotrypsin is between pH 7.5-8.5. Please see the following reference: Wilcox, P.E., Chymotrypsingogens-chymotrypsins, Methods in Enzymology, 19, 64-80 (1970).
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