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1mou

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Revision as of 10:46, 20 March 2008 by OCA (Talk | contribs)
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Image:1mou.gif


PDB ID 1mou

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, resolution 2.2Å
Ligands:
Coordinates: save as pdb, mmCIF, xml



Crystal structure of Coral pigment


Overview

Reef-building corals contain host pigments, termed pocilloporins, that function to regulate the light environment of their resident microalgae by acting as a photoprotectant in excessive sunlight. We have determined the crystal structure of an intensely blue, nonfluorescent pocilloporin to 2.2 A resolution and a genetically engineered fluorescent variant to 2.4 A resolution. The pocilloporin chromophore structure adopts a markedly different conformation in comparison with the DsRed chromophore, despite the chromophore sequences (Gln-Tyr-Gly) being identical; the tyrosine ring of the pocilloporin chromophore is noncoplanar and in the trans configuration. Furthermore, the fluorescent variant adopted a noncoplanar chromophore conformation. The data presented here demonstrates that the conformation of the chromophore is highly dependent on its immediate environment.

About this Structure

1MOU is a Single protein structure of sequence from Montipora efflorescens. Full crystallographic information is available from OCA.

Reference

The 2.2 A crystal structure of a pocilloporin pigment reveals a nonplanar chromophore conformation., Prescott M, Ling M, Beddoe T, Oakley AJ, Dove S, Hoegh-Guldberg O, Devenish RJ, Rossjohn J, Structure. 2003 Mar;11(3):275-84. PMID:12623015

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