Imaging Protein Statistical Substate Occupancy in a Spectrum-Function Phase Space

被引：0

作者：

DeWitt, W. ^{[1
]}

Chu, K. ^{[1
]}

机构：

[1] Univ Vermont, Dept Phys, Burlington, VT 05405 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 09期

关键词：

MOLECULAR-DYNAMICS; CARBONMONOXY MYOGLOBIN; ELECTRIC-FIELDS; RECONSTRUCTION; SPECTROSCOPY; CARBONYL; ENTROPY;

D O I：

10.1103/PhysRevLett.105.098101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Hemeprotein ligand rebinding studies reveal varying IR absorbance and rebinding functions across a cryogenic ensemble. Since IR-active vibrations and rebinding barriers couple to structural coordinates, spectral and functional heterogeneity arise from conformational heterogeneity. Modeling rebinding data as a spectrally resolved superposition of first-order rate processes and employing maximum entropy regularization, protein heterogeneity is imaged as an ensemble occupancy of a spectrum-function phase space. Results from myoglobin rebinding carbon monoxide are discussed.

引用

页数：4

共 11 条

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