5ltq

Structure of the Yellow Fluorescent Protein lanYFP from Branchiostoma lanceolatum at pH 7.5

spinqualitylabelsall models 5ltq, resolution 2.05Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5ltq is a 16 chain structure with sequence from Branchiostoma lanceolatum. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.05Å Ligands: CL, CR2 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function B1PNC0_BRALA Publication Abstract from PubMed Until recently, genes coding for homologues of the autofluorescent protein GFP had only been identified in marine organisms from the phyla Cnidaria and Arthropoda. New fluorescent-protein genes have now been found in the phylum Chordata, coding for particularly bright oligomeric fluorescent proteins such as the tetrameric yellow fluorescent protein lanYFP from Branchiostoma lanceolatum. A successful monomerization attempt led to the development of the bright yellow-green fluorescent protein mNeonGreen. The structures of lanYFP and mNeonGreen have been determined and compared in order to rationalize the directed evolution process leading from a bright, tetrameric to a still bright, monomeric fluorescent protein. An unusual discolouration of crystals of mNeonGreen was observed after X-ray data collection, which was investigated using a combination of X-ray crystallography and UV-visible absorption and Raman spectroscopies, revealing the effects of specific radiation damage in the chromophore cavity. It is shown that X-rays rapidly lead to the protonation of the phenolate O atom of the chromophore and to the loss of its planarity at the methylene bridge. Structural analysis of the bright monomeric yellow-green fluorescent protein mNeonGreen obtained by directed evolution.,Clavel D, Gotthard G, von Stetten D, De Sanctis D, Pasquier H, Lambert GG, Shaner NC, Royant A Acta Crystallogr D Struct Biol. 2016 Dec 1;72(Pt 12):1298-1307. Epub 2016 Nov 30. PMID:27917830 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Green Fluorescent Protein 3D structures

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