کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5371541 1503956 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Individual contributions of the aromatic chromophores to the near-UV Circular Dichroism in class A β-lactamases: A comparative computational analysis
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Individual contributions of the aromatic chromophores to the near-UV Circular Dichroism in class A β-lactamases: A comparative computational analysis
چکیده انگلیسی

Class A β-lactamases are enzymes which are responsible for the bacterial resistance against antibiotics and therefore are of great importance in rational inhibitor design. In this paper we comparatively analyze all the individual contributions of the aromatic chromophores in three class A β-lactamases (from Staphylococcus aureus, Streptomyces albus and Bacillus licheniformis) to their near-UV Circular Dichroism. The analysis is performed using recently developed procedure based on established theoretical method. We found that in β-lactamase from S. albus the most significant contributions to the total near-UV CD intensity exhibit Y251 and Y229. In the tryptophan-containing β-lactamases from B. licheniformis and S. albus, W229 and W251 express the strongest individual contributions. A comparative analysis of the individual contributions of conservative chromophores in class A enzymes namely W165, W210, W229, W251, Y97 and Y105 is presented.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biophysical Chemistry - Volume 151, Issues 1–2, September 2010, Pages 39-45
نویسندگان
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