کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1317660 976558 2006 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dioxygen affinity in heme proteins investigated by computer simulation
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Dioxygen affinity in heme proteins investigated by computer simulation
چکیده انگلیسی

We present an investigation of the molecular basis of the modulation of oxygen affinity in heme proteins using computer simulation. QM-MM calculations are applied to explore distal and proximal effects on O2 binding to the heme, while classical molecular dynamics simulations are employed to investigate ligand migration across the polypeptide to the active site. Trends in binding energies and in the kinetic constants are illustrated through a number of selected examples highlighting the virtues and the limitations of the applied methodologies. These examples cover a wide range of O2-affinities, and include: the truncated-N and truncated-O hemoglobins from Mycobacterium tuberculosis, the mammalian muscular O2 storage protein: myoglobin, the hemoglobin from the parasitic nematode Ascaris lumbricoides, the oxygen transporter in the root of leguminous plants: leghemoglobin, the Cerebratulus lacteus nerve tissue hemoglobin, and the Alcaligenes xyloxidans cytochrome c′.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Inorganic Biochemistry - Volume 100, Issue 4, April 2006, Pages 761–770
نویسندگان
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