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Více informací o knize CHEMICAL MECHANISM OF HOMOCITRATE SYNTHASE FROM Saccharomyces cerevisiae

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Anotace knihy

Homocitrate synthase (HCS1) (acetyl-coenzyme A:§2-ketoglutarate C-transferase; E.C. 2.3.3.14)§catalyzes the first and regulated step in the§a-aminoadipate pathway for lysine synthesis. §The pH dependence of the kinetic parameters, isotope§effects, and dissociation constants for competitive§inhibitors are used to probe the chemical mechanism§of HCS. A general acid-base chemical mechanism is§proposed. site-directed mutagenesis was used to§change the three active site residues of HCS, and the§resulting mutant enzymes were characterized using§initial velocity studies, the pH dependence of the§kinetic parameters and isotope effects. Data§combined with a constant pH molecular dynamics§simulation study suggest a catalytic dyad, comprised§of Glu-155 and His-309, functions as a general base§to deprotonate the methyl group of AcCoA.

Parametry knihy

• Plný název: CHEMICAL MECHANISM OF HOMOCITRATE SYNTHASE FROM Saccharomyces cerevisiae
• Autor: Jinghua Qian
• Jazyk: Angličtina
• Vazba: Brožovaná
• Počet stran: 164
• EAN: 9783639161557
• ID: 06824583
• Nakladatelství: VDM Verlag Dr. Müller
• Hmotnost: 261 g
• Rozměry: 220 × 150 × 10 mm
• Rok vydání: 2009

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