2pox
From Proteopedia
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|PDB= 2pox |SIZE=350|CAPTION= <scene name='initialview01'>2pox</scene>, resolution 1.946Å | |PDB= 2pox |SIZE=350|CAPTION= <scene name='initialview01'>2pox</scene>, resolution 1.946Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= | + | |LIGAND= <scene name='pdbligand=GYC:[(4Z)-2-[(1R)-1-AMINO-2-MERCAPTOETHYL]-4-(4-HYDROXYBENZYLIDENE)-5-OXO-4,5-DIHYDRO-1H-IMIDAZOL-1-YL]ACETIC+ACID'>GYC</scene> |
|ACTIVITY= | |ACTIVITY= | ||
|GENE= Dronpa ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=301887 Echinophyllia sp. SC22]) | |GENE= Dronpa ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=301887 Echinophyllia sp. SC22]) | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY=[[2iov|2IOV]], [[2ie2|2IE2]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2pox FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pox OCA], [http://www.ebi.ac.uk/pdbsum/2pox PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2pox RCSB]</span> | ||
}} | }} | ||
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[[Category: Wahl, M C.]] | [[Category: Wahl, M C.]] | ||
[[Category: Weber, G.]] | [[Category: Weber, G.]] | ||
| - | [[Category: | + | [[Category: green-fluorescent protein-like protein]] |
| + | [[Category: luminescent protein]] | ||
| + | [[Category: reversibly switchable fluorescent protein]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 04:38:57 2008'' |
Revision as of 01:38, 31 March 2008
| |||||||
| , resolution 1.946Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | |||||||
| Gene: | Dronpa (Echinophyllia sp. SC22) | ||||||
| Related: | 2IOV, 2IE2
| ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Dark state structure of the reversibly switchable fluorescent protein Dronpa
Overview
Dronpa is a novel GFP-like fluorescent protein with exceptional light-controlled switching properties. It may be reversibly switched between a fluorescent on-state and a nonfluorescent off-state by irradiation with light. To elucidate the molecular basis of the switching mechanism, we generated reversibly switchable Dronpa protein crystals. Using these crystals we determined the elusive dark-state structure of Dronpa at 1.95-A resolution. We found that the photoswitching results in a cis-trans isomerization of the chromophore accompanied by complex structural rearrangements of four nearby amino acid residues. Because of this cascade of intramolecular events, the chromophore is exposed to distinct electrostatic surface potentials, which are likely to influence the protonation equilibria at the chromophore. We suggest a comprehensive model for the light-induced switching mechanism, connecting a cascade of structural rearrangements with different protonation states of the chromophore.
About this Structure
2POX is a Single protein structure of sequence from Echinophyllia sp. sc22. Full crystallographic information is available from OCA.
Reference
Structural basis for reversible photoswitching in Dronpa., Andresen M, Stiel AC, Trowitzsch S, Weber G, Eggeling C, Wahl MC, Hell SW, Jakobs S, Proc Natl Acad Sci U S A. 2007 Aug 7;104(32):13005-9. Epub 2007 Jul 23. PMID:17646653
Page seeded by OCA on Mon Mar 31 04:38:57 2008
