Structural and functional aspects of domain motions in proteins.
CRC CRITICAL REVIEWS IN BIOCHEMISTRY 1984;
15:291-384. [PMID:
6325088 DOI:
10.3109/10409238409117796]
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Abstract
Three distinct categories of large-scale flexibility in proteins have been documented by single-crystal X-ray diffraction studies: the relatively free movement of essentially rigid globular domains that are connected by a flexible segment of polypeptide, the reorientation of essentially rigid domains among a few distinct conformations, and the concerted transition of a contiguous region of the surface of a protein from a disordered state to an ordered state. In a number of examples, well-defined functions can be assigned to these large-scale structural changes. The occurrence of such motions in proteins of known structure is reviewed, and the best-studied examples are discussed in detail to allow a critical evaluation of the methods used to identify and study these motions.
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