Biochemical Properties of a Penicillinase fromEscherichia coliCarrying Rms 298

Origin and function of penicillinase: a problem in biochemical evolution.

The title of this lecture is intentionally provocative. It is well known that there are many varieties of the enzyme that can split the /3-lactam bond of penicillins and/or cephalosporins (Fig. 1)-the specific reaction referred to generally as "peni-cillinase." And their physiological role in the life history of the bacteria which produce them is still a matter of controversy. But the case I wi...

Properties of penicillinase from Bacillus cereus 569.

Penicillinase from Bacillus cereu.s 569 was purified and examined for homogeneity by sedimentation analysis, aminoterminal analysis, and vertical acrylamide gel electrophoresis. The enzyme preparation was shown to contain three distinct species of extracellular penicillinase which could be separated easily by gel electrophoresis. Kinetic studies failed to reveal any significant differences in t...

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...

Immunological specificity of Staphylococal penicillinase

some properties of fuzzy hilbert spaces and norm of operators

in this thesis, at first we investigate the bounded inverse theorem on fuzzy normed linear spaces and study the set of all compact operators on these spaces. then we introduce the notions of fuzzy boundedness and investigate a new norm operators and the relationship between continuity and boundedness. and, we show that the space of all fuzzy bounded operators is complete. finally, we define...