Applications of high-speed atomic force microscopy to real-time visualization of dynamic biomolecular processes.
Biochim Biophys Acta Gen Subj
; 1862(2): 229-240, 2018 Feb.
Article
em En
| MEDLINE
| ID: mdl-28716648
ABSTRACT
BACKGROUND:
Many biological processes in a living cell are consequences of sequential and hierarchical dynamic events of biological macromolecules such as molecular interactions and conformational changes. Hence, knowledge of structures, assembly and dynamics of proteins is the foundation for understanding how biological molecules work. Among several techniques to analyze dynamics of proteins, high-speed atomic force microscopy (HS-AFM) is unique to provide direct information about both structure and dynamics of single proteins at work. SCOPE OF REVIEW The scope of this review is overviewing recent progresses of HS-AFM for studying dynamic processes of biomolecular systems. In the technical descriptions, key developments enabling fast and non-invasive imaging of biological samples are briefly mentioned. Then recent successful applications of HS-AFM are overviewed to showcase the power of HS-AFM in biological research. MAJORCONCLUSIONS:
We discuss examples where HS-AFM movies captured important dynamic biological processes, including conformational dynamics of membrane proteins, processive movements of enzymes, assembly and disassembly processes of protein supramolecular structures, and dynamics in a two-dimensional protein crystal. These examples demonstrate the usability of HS-AFM to reveal biomolecular processes at high spatiotemporal (nanometer and subsecond) resolution. GENERALSIGNIFICANCE:
Real-time movies of unlabeled proteins at work captured by HS-AFM allowed us to directly gain insights into mechanisms of molecular actions. Together with further functional extensions, HS-AFM will enable researchers to investigate more complex biological systems involving multiple proteins and will become an indispensable technique for life science. This article is part of a Special Issue entitled "Biophysical Exploration of Dynamical Ordering of Biomolecular Systems" Guest Editor Dr., Professor Koichi Kato.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteínas
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Microscopia de Força Atômica
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Biologia Computacional
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Simulação de Dinâmica Molecular
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Modelos Biológicos
Limite:
Animals
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Humans
Idioma:
En
Revista:
Biochim Biophys Acta Gen Subj
Ano de publicação:
2018
Tipo de documento:
Article