Evidence that alpha-crystallin prevents non-specific protein aggregation in the intact eye lens.

@article{Rao1995EvidenceTA,
  title={Evidence that alpha-crystallin prevents non-specific protein aggregation in the intact eye lens.},
  author={Padmanabhuni Venkata Nageswara Rao and Qing Ling Huang and Joseph Horwitz and J. Samuel Zigler},
  journal={Biochimica et biophysica acta},
  year={1995},
  volume={1245 3},
  pages={439-47}
}
The ocular lens is a transparent organ comprised of a highly concentrated and highly ordered matrix of structural proteins, called crystallins, which are probably the longest lived proteins of the body. Lens transparency is dependent upon maintenance of the short range order of the crystallin matrix. This transparency must be maintained for decades in the absence of normal protein synthesis or repair capacity. We present evidence here that alpha-crystallin, one of the major lens proteins, plays… CONTINUE READING

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We present evidence here that alpha - crystallin , one of the major lens proteins , plays a central role in vivo in stabilizing the other crystallins and preventing uncontrolled aggregation of these progressively modified and aging molecules .
We present evidence here that alpha - crystallin , one of the major lens proteins , plays a central role in vivo in stabilizing the other crystallins and preventing uncontrolled aggregation of these progressively modified and aging molecules .
Our studies using soluble homogenates of monkey lenses demonstrate a strong resistance to heat induced non - specific aggregation when the complete complement of crystallins is present ; in contrast , if alpha - crystallin is selectively removed prior to heating , the remaining crystallins undergo extensive non - specific aggregation as indicated by light scattering .
Our studies using soluble homogenates of monkey lenses demonstrate a strong resistance to heat induced non - specific aggregation when the complete complement of crystallins is present ; in contrast , if alpha - crystallin is selectively removed prior to heating , the remaining crystallins undergo extensive non - specific aggregation as indicated by light scattering .
These findings suggest that the soluble HMW protein present in the human lens is the product of the chaperone - like function of alpha - crystallin and that under physiological conditions alpha - crystallin inhibits the uncontrolled aggregation of damaged proteins , thereby preventing the formation of light scattering centers and opacification of the lens .
These findings suggest that the soluble HMW protein present in the human lens is the product of the chaperone - like function of alpha - crystallin and that under physiological conditions alpha - crystallin inhibits the uncontrolled aggregation of damaged proteins , thereby preventing the formation of light scattering centers and opacification of the lens .
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