6MOP

Crystal Structure of the All-trans Retinal-Bound R111K:Y134F:T54V:R132Q:P39Y:R59Y:L121E Mutant of Human Cellular Retinoic Acid Binding Protein II in the Dark at 1.9 Angstrom Resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Mimicking Microbial Rhodopsin Isomerization in a Single Crystal.

Ghanbarpour, A.Nairat, M.Nosrati, M.Santos, E.M.Vasileiou, C.Dantus, M.Borhan, B.Geiger, J.H.

(2018) J. Am. Chem. Soc. --: --

  • DOI: 10.1021/jacs.8b12493
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • 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 m ...

    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.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cellular retinoic acid-binding protein 2
A
137Homo sapiensMutation(s): 7 
Gene Names: CRABP2
Find proteins for P29373 (Homo sapiens)
Go to Gene View: CRABP2
Go to UniProtKB:  P29373
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
RET
Query on RET

Download SDF File 
Download CCD File 
A
RETINAL
C20 H28 O
NCYCYZXNIZJOKI-OVSJKPMPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.195 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 58.986α = 90.00
b = 58.986β = 90.00
c = 100.314γ = 120.00
Software Package:
Software NamePurpose
PHENIXphasing
PHENIXrefinement
HKL-2000data scaling
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Human Genome Research InstituteUnited StatesGM101353

Revision History 

  • Version 1.0: 2019-01-09
    Type: Initial release