期刊
MICROBIOLOGYOPEN
卷 2, 期 2, 页码 350-364出版社
WILEY
DOI: 10.1002/mbo3.72
关键词
C-terminal reporter; deuterium exchange; membrane protein; oxidative labeling; topology determinants; topology mapping
类别
资金
- Cystic Fibrosis Canada (CFC)
- Canadian Institutes of Health Research (CIHR) [MOP-14687]
Integral membrane proteins with a-helical transmembrane segments (TMS) are known to play important and diverse roles in prokaryotic cell physiology. The net hydrophobicity of TMS directly corresponds to the observed difficulties in expressing and purifying these proteins, let alone producing sufficient yields for structural studies using two-/three-dimensional (2D/3D) crystallographic or nuclear magnetic resonance methods. To gain insight into the function of these integral membrane proteins, topological mapping has become an important tool to identify exposed and membrane-embedded protein domains. This approach has led to the discovery of protein tracts of functional importance and to the proposition of novel mechanistic hypotheses. In this review, we synthesize the various methods available for topological mapping of alpha-helical integral membrane proteins to provide investigators with a comprehensive reference for choosing techniques suited to their particular topological queries and available resources.
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