เข้าสู่ระบบ สมัครสมาชิก

lens proteins การใช้

ประโยคมือถือ
  • In a hypermature or Morgagnian cataract, the lens proteins have become liquid.
  • And cataracts form when the lens protein alpha-crystallin becomes crosslinked, possibly by copper-generated superoxide.
  • An immature cataract has some transparent protein, but with a mature cataract, all the lens protein is opaque.
  • Instead of evolving a new lens protein to make a lens-like structure in the photophore, the squid simply reached into its existing bag of tricks.
  • Found in great quantities in the lens and perfectly arranged to focus light, crystallins were long thought to be highly specialized lens proteins that evolved solely to allow animals to see.
  • Many scientists think that the most important factors are the age-related changes that take place within the lens proteins, making the lens harder and less elastic with the years.
  • Dr . Hubbell's research also includes structure and function relationships in water-soluble proteins such as the lens protein, a-crystallin, and the retinoid carrying proteins which transport vitamin A throughout photoreceptor cells.
  • Expression studies in non-lens cells showed that the ?B-crystallin, other than being a functional lens protein, is a functional small heat shock protein . ?B-crystallin is induced by heat and other physiological stresses, and it can protect the cells from elevated temperatures and hypertonic stress . ?B-crystallin is also overexpressed in many pathologies, including neurodegenerative diseases, fibroblasts of patients with Werner's disease showing premature senescence, and growth abnormalities.