منابع مشابه
Skin Care with Herbal Exfoliants
Exfoliation is the process of removal of removing the old, dead skin cells that cling to the skin’s outermost surface. The two types of exfoliation are mechanical and chemical. People’s opportunities for seeking dermatological assistance for a myriad of conditions, including acne, rosacea, striae, photodamage, and skin cancers have increased in recent years. Chronological aging is a process of ...
متن کاملQuantum Chemistry as a Tool in Asymmetric Biocatalysis: Limonene Epoxide Hydrolase Test Case**
Cluster model: Large active-site models (see figure) are used to investigate the selectivity of limonene epoxide hydrolase, both the wild type and mutants optimized through directed evolution. Good agreement is found between theory and the experimental data, thus demonstrating that the quantum chemical cluster approach can be a powerful tool in the field of asymmetric biocatalysis.
متن کاملLiver microsomal epoxide hydrase.
1. The substrate specificity of membrane-bound and purified epoxide hydrase from rat liver microsomes has been studied. Both enzyme preparations catalyzed the hydration of a variety of alkene oxidase as well as arene oxides of several polycyclic aromatic hydrocarbons. 2. Unlike the membrane-bound enzyme, the rate of hydration for most of the substrates catalyzed by the purified epoxide hydrase ...
متن کاملHeptachlor and Heptachlor Epoxide
9. REFERENCES ACGIH. 1986. Documentation of the threshold limit valves and biological exposure indices. 5th ed. Cincinnati, OH: American Conference of Governmental Industrial Hygienists, 296. ACGIH. 2004. Threshold limit values for chemical substances and physical agents and biological exposure indices. Cincinnati, OH: American Conference of Governmental Industrial Hygienists. Adeshina F, Todd ...
متن کاملHepatic Microsomal Epoxide Hydrase
The effects of a wide variety of chemical modification reagents on the activity of purified rat liver microsomal epoxide hydrase have been investigated. Alkylating agents, such as the phenacyl bromides and benzyl bromide are potent inhibitors of epoxide hydrase. Z-Bromo-4’-nitroacetophenone @-nitrophenacyl bromide) specifically and irreversibly inactivates epoxide hydrase. Pseudo-first order ki...
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ژورنال
عنوان ژورنال: Science
سال: 2008
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.320.5874.291a