Journal
IUBMB LIFE
Volume 61, Issue 5, Pages 485-495Publisher
WILEY
DOI: 10.1002/iub.176
Keywords
alpha-crystallin; chaperone-like activity; modulation of chaperone function; prevention of cataract
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Funding
- Department of Science and Technology
- Department of Biotechnology
- Indian Council of Medical Research, Government of India
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Cataract, loss of eye lens transparency, is the leading cause of blindness worldwide. alpha-Crystallin, initially known as one of the major structural proteins of the eye lens', is composed of two homologous subunits alpha A- and alpha B-crystallins. It is convincingly established now that alpha-crystallin functions like a chaperone and plays a decisive role in the maintenance of eye lens transparency. The functional ability of alpha-crystallin subunits is to act in cooperation as molecular chaperones to prevent the cellular aggregation and/or inactivation of client proteins under variety of stress conditions. However, chaperone-like activity of alpha-crystallin could be deteriorated or lost during aging or under certain clinical conditions because of various genetic and environmental factors. This review will focus specifically on relevance of alpha-crystallin chaperone function to lens transparency. In particular, we reviewed the studies that demonstrate the modulation of alpha-crystallin chaperone-like activity and discussed the possibility of chaperone-like activity of alpha-crystallin as a potential target to prevent or delay the cataractogenesis. (C) 2009 IUBMB IUBMB Life, 61(5): 485-495, 2009
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