5ui2 | pdb_00005ui2

CRYSTAL STRUCTURE OF ORANGE CAROTENOID PROTEIN

spinqualitylabelsall models 5ui2, resolution 2.10Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5ui2 is a 2 chain structure with sequence from Limnospira maxima. This structure supersedes the now removed PDB entry 1m98. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.1Å Ligands: CL, EQ3, FRU, GLC, PRD_900003 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function OCP_LIMMA Acts as a blue-light photoreceptor and photo-protectant. Essential for inhibiting damaged induced by excess blue-green light via a process known as non-photochemical quenching (NPQ). Binding carotenoids improves OCP's intrinsic photoprotectant activity by broadening its absorption spectrum and facilitating the dissipation of absorbed energy (PubMed:15751975). In the dark or dim light the stable inactive form (OCP-O) is orange, upon illumination with blue-green light it converts to a metastable active red form (OCP-R), inducing energy dissipation, quenching cellular fluorescence via NPQ (By similarity).[UniProtKB:P74102]

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