1HCJ

Photoproduct of the wild-type Aequorea victoria Green Fluorescent Protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.209 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Phototransformation of Green Fluorescent Protein with Uv and Visible Light Leads to Decarboxylation of Glutamate 222

Van Thor, J.J.Gensch, T.Hellingwerf, K.J.Johnson, L.

(2002) Nat.Struct.Mol.Biol. 9: 37

  • DOI: 10.1038/nsb739

  • PubMed Abstract: 
  • Wild type green fluorescent protein (GFP) from Aequorea victoria absorbs predominantly at 398 nm. Illumination with UV (254 nm) or visible (390 nm) light transforms this state (GFP(398)) into one absorbing at 483 nm (GFP(483)). Here we show that this ...

    Wild type green fluorescent protein (GFP) from Aequorea victoria absorbs predominantly at 398 nm. Illumination with UV (254 nm) or visible (390 nm) light transforms this state (GFP(398)) into one absorbing at 483 nm (GFP(483)). Here we show that this photoconversion of GFP is a one-photon process that is paralleled by decarboxylation of Glu 222. We propose a mechanism in which decarboxylation is due to electron transfer between the gamma-carboxylate of Glu 222 and the p-hydroxybenzylidene-imidazolidinone chromophore of GFP, followed by reverse transfer of an electron and a proton to the remaining carbon side chain atom of Glu 222. Oxidative decarboxylation of a gamma-carboxylate represents a new type of posttranslational modification that may also occur in enzymes with high-potential reaction intermediates.


    Organizational Affiliation

    Laboratory of Molecular Biophysics, University of Oxford, The Rex Richards Building, South Parks Road, Oxford OX1 3QU, UK. jasper@biop.ox.ac.uk




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GREEN FLUORESCENT PROTEIN
A, B, C, D
238Aequorea victoriaGene Names: GFP
Find proteins for P42212 (Aequorea victoria)
Go to UniProtKB:  P42212
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
ABA
Query on ABA
A, B, C, D
L-PEPTIDE LINKINGC4 H9 N O2ALA
GYS
Query on GYS
A, B, C, D
L-PEPTIDE LINKINGC14 H15 N3 O5SER, TYR, GLY
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.209 
  • Space Group: P 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 71.770α = 90.00
b = 65.670β = 103.88
c = 110.500γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
MOLREPphasing
SCALAdata scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-12-07
    Type: Initial release
  • Version 1.1: 2014-03-05
    Type: Atomic model, Database references, Derived calculations, Non-polymer description, Other, Source and taxonomy, Structure summary, Version format compliance