4YDA
Crystal structure of R111K:Y134F:T54V:R132Q:P39Q:R59Y mutant of human cellular retinoic acid binding proteinii with retinal at 1.95 angstrom - after 1hour visible light irradiation - 3rd cycle
Summary for 4YDA
| Entry DOI | 10.2210/pdb4yda/pdb |
| Related | 2G7B 4EEJ 4I9S 4RUU 4YBP 4YBU 4YCE 4YCH 4YDB |
| Descriptor | Cellular retinoic acid-binding protein 2, RETINAL (3 entities in total) |
| Functional Keywords | photo switchable protein, retinal isomerization, pka change of retinal psb, protein engineering, rhodopsin mimic, transport protein |
| Biological source | Homo sapiens (Human) |
| Cellular location | Cytoplasm: P29373 |
| Total number of polymer chains | 1 |
| Total formula weight | 15828.18 |
| Authors | Nosrati, M.,Geiger, J.H. (deposition date: 2015-02-21, release date: 2016-02-24, Last modification date: 2024-11-20) |
| Primary citation | Nosrati, M.,Berbasova, T.,Vasileiou, C.,Borhan, B.,Geiger, J.H. A Photoisomerizing Rhodopsin Mimic Observed at Atomic Resolution. J.Am.Chem.Soc., 138:8802-8808, 2016 Cited by PubMed Abstract: The members of the rhodopsin family of proteins are involved in many essential light-dependent processes in biology. Specific photoisomerization of the protein-bound retinylidene PSB at a specified wavelength range of light is at the heart of all of these systems. Nonetheless, it has been difficult to reproduce in an engineered system. We have developed rhodopsin mimics, using intracellular lipid binding protein family members as scaffolds, to study fundamental aspects of protein/chromophore interactions. Herein we describe a system that specifically isomerizes the retinylidene protonated Schiff base both thermally and photochemically. This isomerization has been characterized at atomic resolution by quantitatively interconverting the isomers in the crystal both thermally and photochemically. This event is accompanied by a large pKa change of the imine similar to the pKa changes observed in bacteriorhodopsin and visual opsins during isomerization. PubMed: 27310917DOI: 10.1021/jacs.6b03681 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (1.951 Å) |
Structure validation
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