6yqg

Crystal structure of native Phycocyanin in spacegroup P63 at 1.45 Angstroms.

spinqualitylabelsall models 6yqg, resolution 1.45Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6yqg is a 2 chain structure with sequence from Thermosynechococcus vestitus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.45Å Ligands: CYC, MEN, TE4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function PHCA_THEVB Light-harvesting photosynthetic bile pigment-protein from the phycobiliprotein complex (phycobilisome, PBS). Phycocyanin is the major phycobiliprotein in the PBS rod. Publication Abstract from PubMed The unique crystallization properties of the antenna protein C-phycocyanin (C-PC) from the thermophilic cyanobacterium Thermosynechococcus elongatus are reported and discussed. C-PC crystallizes in hundreds of significantly different conditions within a broad pH range and in the presence of a wide variety of precipitants and additives. Remarkably, the crystal dimensions vary from a few micrometres, as used in serial crystallography, to several hundred micrometres, with a very diverse crystal morphology. More than 100 unique single-crystal X-ray diffraction data sets were collected from randomly selected crystals and analysed. The addition of small-molecule additives revealed three new crystal packings of C-PC, which are discussed in detail. The high propensity of this protein to crystallize, combined with its natural blue colour and its fluorescence characteristics, make it an excellent candidate as a superior and highly adaptable model system in crystallography. C-PC can be used in technical and methods development approaches for X-ray and neutron diffraction techniques, and as a system for comprehending the fundamental principles of protein crystallography. C-phycocyanin as a highly attractive model system in protein crystallography: unique crystallization properties and packing-diversity screening.,Sarrou I, Feiler CG, Falke S, Peard N, Yefanov O, Chapman H Acta Crystallogr D Struct Biol. 2021 Feb 1;77(Pt 2):224-236. doi: , 10.1107/S2059798320016071. Epub 2021 Jan 26. PMID:33559611 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Phycocyanin

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