Control of Substrates Beyond the Catalyst Active Site

control of the optical properties of nanoparticles by laser fields

در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...

PROBING THE ACTIVE SITE OF RHODANESE WITH DISULFIDE REAGENTS

Mapping the active site of papain with the aid of peptide substrates and inhibitors.

The active site of an enzyme performs the twofold function of binding a substrate and catalysing a reaction. The efficiency of these actions determines the overall activity of the enzyme towards the particular substrate, i.e. determines the specificity of the enzyme. It is therefore possible to obtain information on the active site by the kinetics of the enzyme’s reactions with different substr...

Arrangement of the substrates at the active site of brain pyridoxal kinase.

The distances between enzyme-bound paramagnetic CrATP (a stable, beta, gamma-bidentate complex of Cr3+ and ATP) at the active site of sheep brain pyridoxal kinase and the protons of bound inhibitor 4-dPyr (4-deoxypyridoxine) were determined in the ternary enzyme-CrATP.4-dPyr complex by measuring the paramagnetic effects of Cr3+ on the longitudinal relaxation rates (1/T1p) of the protons of 4-dP...

Mapping the active site of papain with the aid of peptide substrates and inhibitors

The active site of an enzyme performs the twofold function of binding a substrate and catalysing a reaction. The efficiency of these actions determines the overall activity of the enzyme towards the particular substrate, i.e. determines the specificity of the enzyme. It is therefore possible to obtain information on the active site by the kinetics of the enzyme’s reactions with different substr...