期刊
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
卷 447, 期 2, 页码 244-249出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bbrc.2014.03.119
关键词
beta B2-crystallin; Inherited mutation; Autosomal dominant congenital nuclear cataract; Protein aggregation; Protein fibrillization; Acid denaturation
资金
- Ministry of Science and Technology of China [2010CB912402, 2012BAIO8B01]
- National Natural Science Foundation of China [81371001]
- Zhejiang Key Innovation Team Project of China [2009R50039]
- Zhejiang Key Laboratory Fund of China [2011E10006]
Cataract is characterized by the formation of light-scattering protein aggregates in the lens.beta/gamma-Crystallins are the predominant structural proteins in the cytosol of lens fiber cells, and more than fifty beta/gamma-crystallin mutations have been linked to autosomal dominant congenital cataract. However, the structural role of these mutations in the formation of the core structures of amorphous aggregates or amyloid-like fibrils has not been elucidated yet. In this research, we studied the effects of the VI87M and RI88H mutations on the aggregation and fibrillization of beta B2-crystallin during acid denaturation. The behavior of Vi 87M was the same as the WT protein, suggesting that the residue at position 187 contributed little to the aggregation/fibrillization process. R188H promoted the formation of amorphous aggregates at pH above 3 and accelerated fibrillization at pH 3. The distinct behaviors of the mutants suggested that the residue at position 188 might play a regulatory role in beta B2-crystallin aggregation/fibrillization but not reside in the core of the aggregates/fibrils. (C) 2014 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据