Cold stability of intrinsically disordered proteins

被引:42
作者
Tantos, Agnes [1 ]
Friedrich, Peter [1 ]
Tompa, Peter [1 ]
机构
[1] Hungarian Acad Sci, Inst Enzymol, Biol Res Ctr, H-1113 Budapest, Hungary
基金
匈牙利科学研究基金会;
关键词
Cold denaturation; Cold shock protein; LEA; Intrinsically disordered protein; Chaperone; Stability; UNSTRUCTURED PROTEINS; ARABIDOPSIS-THALIANA; STRUCTURAL DISORDER; MOLECULAR-BASIS; CALPASTATIN; ADAPTATION; CALPAIN; STRESS; DENATURATION; CHAPERONES;
D O I
10.1016/j.febslet.2008.12.054
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Contrary to globular proteins, intrinsically disordered proteins (IDPs) lack a folded structure and they do not lose solubility at elevated temperatures. Although this should also be true at low temperatures, cold stability of IDPs has not been addressed in any scientific work so far. As direct characterization of cold-denaturation is difficult, we approached the problem through a freezing-induced loss-of-function model of globular-disordered functional protein pairs (m-calpain-calpastatin, tubulin-Map2c, Hsp90-ERD14). Our results affirm that in contrast with globular proteins IDPs are resistant to cold treatment. The theoretical and functional aspects of this observation are discussed. (C) 2009 Federation of European Biochemical Societies. Published by Elsevier B. V. All rights reserved.
引用
收藏
页码:465 / 469
页数:5
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