1EMA

GREEN FLUORESCENT PROTEIN FROM AEQUOREA VICTORIA

• PDB DOI: https://doi.org/10.2210/pdb1EMA/pdb

• Classification: FLUORESCENT PROTEIN
• Organism(s): Aequorea victoria
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 1996-08-01 Released: 1996-11-08 
• Deposition Author(s): Ormo, M., Remington, S.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å

Literature

Crystal structure of the Aequorea victoria green fluorescent protein.

Ormo, M., Cubitt, A.B., Kallio, K., Gross, L.A., Tsien, R.Y., Remington, S.J.

(1996) Science 273: 1392-1395

• PubMed: 8703075 
• DOI: https://doi.org/10.1126/science.273.5280.1392
• Primary Citation of Related Structures:  
  1EMA


• PubMed Abstract: 
  

  The green fluorescent protein (GFP) from the Pacific Northwest jellyfish Aequorea victoria has generated intense interest as a marker for gene expression and localization of gene products. The chromophore, resulting from the spontaneous cyclization and oxidation of the sequence -Ser65 (or Thr65)-Tyr66-Gly67-, requires the native protein fold for both formation and fluorescence emission. The structure of Thr65 GFP has been determined at 1.9 angstrom resolution. The protein fold consists of an 11-stranded beta barrel with a coaxial helix, with the chromophore forming from the central helix. Directed mutagenesis of one residue adjacent to the chromophore, Thr203, to Tyr or His results in significantly red-shifted excitation and emission maxima.

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Organizational Affiliation: 

Institute of Molecular Biology and Department of Physics, University of Oregon, Eugene, OR 97403-1226, USA.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 27.23 kDa 
• Atom Count: 1,866 
• Modelled Residue Count: 226 
• Deposited Residue Count: 236 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
GREEN FLUORESCENT PROTEIN	A	236	Aequorea victoria	Mutation(s): 1
UniProt
Find proteins for P42212 (Aequorea victoria) Explore P42212  Go to UniProtKB:  P42212

Small Molecules

Modified Residues  2 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CRO	A	L-PEPTIDE LINKING	C15 H17 N3 O5		THR, TYR, GLY
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 51.77	α = 90
b = 62.85	β = 90
c = 70.67	γ = 90

Software Package:

Software Name	Purpose
CCP4	model building
PROTEIN	model building
TNT	refinement
HKL	data reduction
HKL	data scaling
CCP4	phasing
PROTEIN	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1996-11-08 
Deposition Author(s): Ormo, M., Remington, S.J.

Revision History  

• Version 1.0: 1996-11-08
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-06-05
  Changes: Data collection, Database references, Derived calculations, Other
• Version 1.4: 2024-10-23
  Changes: Structure summary