C0887
Chloroperoxidase from Caldariomyces fumago
buffered aqueous suspension, 1,000-2,000 units/mg protein (E1%/280)
Synonyme(s) :
Chloride Peroxidase, Chloride:hydrogen-peroxide oxidoreductase
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About This Item
Numéro CAS:
Numéro MDL:
Code UNSPSC :
12352204
Nomenclature NACRES :
NA.54
Produits recommandés
Source biologique
fungus (Caldariomyces fumago)
Niveau de qualité
Forme
buffered aqueous suspension
Activité spécifique
1,000-2,000 units/mg protein (E1%/280)
Poids mol.
42 kDa
Rapport des absorbances
RZ ~1.0
Température de stockage
2-8°C
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Application
A useful alternative to lactoperoxidase for 131I ion labeling studies, for bromination of proteins, and for 36Cl labeling of macromolecules in long-term isolation procedures.
Actions biochimiques/physiologiques
Chloroperoxidase (CPO) is a 42,000 Da extracellular heme glycoenzyme containing ferriprotoporphyrin IX as the prosthetic group. CPO is secreted from fungus and exhibits a broad spectrum of chemical reactivities. It is a peroxide-dependent chlorinating enzyme. It also catalyzes peroxidase-, catalase- and cytochrome P450-type reactions of dehydrogenation, H2O2 decomposition and oxygen insertion, respectively. The enzyme has magnetic and spectroscopic properties similar to that of cyctochrome P-450. CPO from the fungus Caldariomyces fumago has the capacity to chlorinate aromatic hydrocarbons, including polycyclic aromatic hydrocarbons (PAHs).
Définition de l'unité
One unit will catalyze the conversion of 1.0 μmole of monochlorodimedon to dichlorodimedon per min at pH 2.75 at 25 °C in the presence of potassium chloride and H2O2.
Forme physique
Purified suspension in 0.1 M sodium phosphate solution, pH approx. 4.5
Inhibiteur
Réf. du produit
Description
Tarif
Code de la classe de stockage
12 - Non Combustible Liquids
Classe de danger pour l'eau (WGK)
WGK 1
Point d'éclair (°F)
Not applicable
Point d'éclair (°C)
Not applicable
Équipement de protection individuelle
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
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R Vázquez-Duhalt et al.
Phytochemistry, 58(6), 929-933 (2001-10-31)
Chloroperoxidase from Caldariomyces fumago was able to chlorinate 17 of 20 aromatic hydrocarbons assayed in the presence of hydrogen peroxide and chloride ions. Reaction rates varied from 0.6 min(-1) for naphthalene to 758 min(-1) for 9-methylanthracene. Mono-, di- and tri-chlorinated
Daniel Andrew et al.
Biochemical and biophysical research communications, 415(4), 646-649 (2011-11-15)
Azide is a well-known inhibitor of heme-enzymes. Herein, we report the counter-intuitive observation that at some concentration regimes, incorporation of azide in the reaction medium enhances chloroperoxidase (CPO, a heme-enzyme) mediated one-electron abstractions from several substrates. A diffusible azidyl radical
Sudeep Kumar Gade et al.
Biochemical and biophysical research communications, 419(2), 211-214 (2012-02-22)
We report that incorporation of very low concentrations of redox protein cytochrome c and redox active small molecule vitamin C impacted the outcome of one-electron oxidations mediated by structurally distinct plant/fungal heme peroxidases. Evidence suggests that cytochrome c and vitamin
Marcela Ayala et al.
Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry, 16(1), 63-68 (2010-09-14)
Heme peroxidases are subject to a mechanism-based oxidative inactivation. During the catalytic cycle, the heme group is activated to form highly oxidizing species, which may extract electrons from the protein itself. In this work, we analyze changes in residues prone
Adam C Chamberlin et al.
The journal of physical chemistry. B, 115(13), 3642-3647 (2011-03-18)
OLYP/TZP calculations on two symmetrized model complexes [Fe(TPP)(py)(2)](2+) and [Fe(TPP)(PhNC)(2)](2+) (TPP = meso-tetraphenylporphyrin, py = pyridine, PhNC = phenylisocyanide) reveal dense manifolds of low-energy electronic states. For the latter complex, broken-symmetry calculations successfully reproduce the unique S = 0 ground
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