6mqy

Crystal Structure of the 13-cis Product of All-trans Retinal-Bound R111K:Y134F:T54V:R132Q:P39Y:R59Y:L121E Mutant of Human Cellular Retinoic Acid Binding Protein II Irradiated with 400 nm Laser (30 seconds) at 1.9 Angstrom

spinqualitylabelsall models 6mqy, resolution 1.90Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6mqy is a 1 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: GOL, RET Gene: CRABP2 (HUMAN) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [RABP2_HUMAN] Transports retinoic acid to the nucleus. Regulates the access of retinoic acid to the nuclear retinoic acid receptors. Publication Abstract from PubMed Bacteriorhodopsin represents the simplest, and possibly most abundant, phototropic system requiring only a retinal-bound transmem-brane protein to convert photons of light to an energy-generating proton gradient. The creation and interrogation of a microbial rhodop-sin mimic, based on an orthogonal protein system, would illuminate the design elements required to generate new photoactive proteins with novel function. Described is a microbial rhodopsin mimic, created using a small soluble protein as template, that specifically photo-isomerizes all-trans to 13-cis retinal followed by thermal relaxation to the all-trans isomer, mimicking the bacteriorhodopsin photocycle, in a single crystal. The key element for selective isomerization is a tuned steric interaction between chromophore and protein, similar to that seen in the microbial rhodopsins. It is further demonstrated that a single mutation converts the system into a protein photo-switch without chromophore photoisomerization or conformational change. Mimicking Microbial Rhodopsin Isomerization in a Single Crystal.,Ghanbarpour A, Nairat M, Nosrati M, Santos EM, Vasileiou C, Dantus M, Borhan B, Geiger JH J Am Chem Soc. 2018 Dec 22. doi: 10.1021/jacs.8b12493. PMID:30580520 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Cellular retinoic acid-binding protein 3D structures

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