Structural highlights
Function
[PHCA_ARTPT] Light-harvesting photosynthetic bile pigment-protein from the phycobiliprotein complex. [PHCB_ARTPT] Light-harvesting photosynthetic bile pigment-protein from the phycobiliprotein complex.
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The crystal structure of C-phycocyanin, a light-harvesting phycobiliprotein from cyanobacteria (blue-green algae) Spirulina platensis has been solved by molecular replacement technique. The crystals belong to space group P2(1) with cell parameters a = 107.20, b = 115.40, c = 183.04 A; beta = 90.2 degrees. The structure has been refined to a crystallographic R factor of 19.2% (R(free) = 23.9%) using the X-ray diffraction data extending up to 2.2 A resolution. The asymmetric unit of the crystal cell consists of two (alphabeta)6-hexamers, each hexamer being the functional unit in the native antenna rod of cyanobacteria. The molecular structure resembles that of other reported C-phycocyanins. However, the unique form of aggregation of two (alphabeta)6-hexamers in the crystal asymmetric unit, suggests additional pathways of energy transfer in lateral direction between the adjacent hexamers involving beta155 phycocyanobilin chromophores.
Crystal structure of a light-harvesting protein C-phycocyanin from Spirulina platensis.,Padyana AK, Bhat VB, Madyastha KM, Rajashankar KR, Ramakumar S Biochem Biophys Res Commun. 2001 Apr 13;282(4):893-8. PMID:11352634[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Padyana AK, Bhat VB, Madyastha KM, Rajashankar KR, Ramakumar S. Crystal structure of a light-harvesting protein C-phycocyanin from Spirulina platensis. Biochem Biophys Res Commun. 2001 Apr 13;282(4):893-8. PMID:11352634 doi:10.1006/bbrc.2001.4663
