1ayr | pdb_00001ayr
ARRESTIN FROM BOVINE ROD OUTER SEGMENTS
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| 1ayr, resolution 3.3Å | |||||||||||||
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
Overview
Retinal arrestin is the essential protein for the termination of the light response in vertebrate rod outer segments. It plays an important role in quenching the light-induced enzyme cascade by its ability to bind to phosphorylated light-activated rhodopsin (P-Rh*). Arrestins are found in various G-protein-coupled amplification cascades. Here we report on the three-dimensional structure of bovine arrestin (relative molecular mass, 45,300) at 3.3 A resolution. The crystal structure comprises two domains of antiparallel beta-sheets connected through a hinge region and one short alpha-helix on the back of the amino-terminal fold. The binding region for phosphorylated light-activated rhodopsin is located at the N-terminal domain, as indicated by the docking of the photoreceptor to the three-dimensional structure of arrestin. This agrees with the interpretation of binding studies on partially digested and mutated arrestin.
About this Structure
1AYR is a Single protein structure of sequence from Bos taurus. Full crystallographic information is available from OCA.
Reference
X-ray crystal structure of arrestin from bovine rod outer segments., Granzin J, Wilden U, Choe HW, Labahn J, Krafft B, Buldt G, Nature. 1998 Feb 26;391(6670):918-21. PMID:9495348
Page seeded by OCA on Sun Mar 30 18:50:08 2008
