Latest Issue of Science News


News

Bright Idea: Protein relocation helps eyes adapt to light

Long before sunglasses came on the scene, animals had evolved ways, such as shutter-like irises, to deal with the large differences in lighting that their eyes encounter. After all, many animals can see on both a starry night and a sunny day.

Two research teams have now uncovered a novel molecular mechanism that assists animals' vision. Proteins that are central to the complex light-sensing systems of the eye migrate from one part of a retinal cell to another to adjust the cell's sensitivity.

"This is a new theme" in light adaptation, says Vadim Arshavsky of Harvard Medical School in Boston, an author of one of the reports that appear in the March 28 Neuron.

Note: To comment, Science News subscribing members must now establish a separate login relationship with Disqus. Click the Disqus icon below, enter your e-mail and click “forgot password” to reset your password. You may also log into Disqus using Facebook, Twitter or Google.

X
This article is available only to subscribing members. Join SSP today or Log in.