期刊
CURRENT OPINION IN STRUCTURAL BIOLOGY
卷 16, 期 2, 页码 260-265出版社
CURRENT BIOLOGY LTD
DOI: 10.1016/j.sbi.2006.03.007
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资金
- NIGMS NIH HHS [GM0-31299] Funding Source: Medline
Despite the difficulties associated with determining atomic-level structures for materials that are fibrous, structural biologists are making headway in understanding the architecture of amyloid-like fibrils. It has long been recognized that these fibrils contain a cross-beta spine, with beta-strands perpendicular to the fibril axis. Recently, atomic structures have been determined for some of these cross-beta spines, revealing a pair of beta-sheets mated closely together by intermeshing sidechains in what has been termed a steric zipper. To explain the conversion of proteins from soluble to fibrous forms, several types of models have been proposed: refolding, natively disordered and gain of interaction. The gain-of-interaction models may additionally be subdivided into direct stacking, cross-beta spine, three-dimensional domain swapping and three-dimensional domain swapping with a cross-beta spine.
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