Membrane proteins are an important class of proteins. They are essential components for cellular functions and processes; they play important roles as ion channels, transporters, enzymes and receptors. Their normal functions are fundamental to our health, and many impaired membrane proteins have been linked to serious diseases. Recent advances in the field of structural biology have enabled us to have better understanding of membrane protein structures. The three-dimensional atomic resolution structural information of membrane proteins is critical to understand their function and mechanism.
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