2j96
From Proteopedia
|
THE E-CONFIGURATION OF ALFA-PHYCOERYTHROCYANIN
Overview
Phycobiliproteins and phytochromes are light-harvesting and light-sensing, proteins containing linear tetrapyrroles, so-called bile chromophores. The, chromophores in certain biliproteins, including the phytochromes, isomerize reversibly from a stable Z-configuration to a stable, E-configuration when irradiated with light of the appropriate wavelength., Here, we report the crystal structure of alpha-phycoerythrocyanin with its, chromophore in the E-configuration, compare it with the Z-configuration, found in trimeric phycoerythrocyanin, and reveal the structural bases of, the isomerization. The geometric changes of the chromophore account for, the large spectral shift, which characterizes the overall transition., Interactions of the chromophore A and D pyrrole rings with flexible, protein ... [(full description)]
About this Structure
2J96 is a [Single protein] structure of sequence from [Mastigocladus laminosus] with PVN as [ligand]. Full crystallographic information is available from [OCA].
Reference
Structural basis for the photochemistry of alpha-phycoerythrocyanin., Schmidt M, Patel A, Zhao Y, Reuter W, Biochemistry. 2007 Jan 16;46(2):416-23. PMID:17209552
Page seeded by OCA on Mon Oct 29 17:20:31 2007
