Biological Assembly 1  

 3D View: Structure | Electron Density

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 106951.84 
• Atom Count: 7180 
• Residue Count: 944 
• Unique protein chains: 1

1B9C

Green Fluorescent Protein Mutant F99S, M153T and V163A

• DOI: 10.2210/pdb1B9C/pdb

• Classification: LUMINESCENT PROTEIN
• Organism(s): Aequorea victoria
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): 4 


• Deposited: 1999-02-09 Released: 2000-11-17 
• Deposition Author(s): Battistutta, R., Negro, A., Zanotti, G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.4 Å
• R-Value Free: 0.280 
• R-Value Work: 0.204 

Literature

Crystal structure and refolding properties of the mutant F99S/M153T/V163A of the green fluorescent protein.

Battistutta, R., Negro, A., Zanotti, G.

(2000) Proteins 41: 429-437

• PubMed: 11056031 


• PubMed Abstract: 
  

The mutant F99S/M153T/V163A of the Green Fluorescent Protein (c3-GFP) has spectral characteristics similar to the wild-type GFP, but it is 42-fold more fluorescent in vivo. Here, we report the crystal structure and the refolding properties of c3-GFP and compare them with those of the less fluorescent wt-GFP and S65T mutant. The topology and the overall structure of c3-GFP is similar to the wild-type GFP. The three mutated residues, Ser99, Thr153, and Ala163, lie on the surface of the protein in three different beta-strands. The side chains of Ser99 and Thr153 are exposed to the solvent, whereas that of Ala163 points toward the interior of the protein. No significant deviation from the structure of the wild-type molecule is found around these positions, and there is not clear evidence of any distortion in the position of the chromophore or of the surrounding residues induced by the mutated amino acids. In vitro refolding experiments on urea-denatured c3-GFP reveal a renaturation behavior similar to that of the S65T molecule, with kinetic constants of the same order of magnitude. We conclude that the higher fluorescence activity of c3-GFP can be attributed neither to particular structural features nor to a faster folding process, as previously proposed.

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Related Citations: 

• The Molecular Structure of Green Fluorescent Protein
  Yang, F.,Moss, L.G.,Phillips Jr., G.N.
  (1996) Nat.Biotechnol. 14: 1246
• 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




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Organizational Affiliation: 

Dipartimento di Chimica Organica and Centro Studi sui Biopolimeri, Università di Padova, Padova, Italy. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
PROTEIN (GREEN FLUORESCENT PROTEIN)	A, B, C, D	238	Aequorea victoria	Mutation(s): 4  Gene Names: GFP
Find proteins for P42212 (Aequorea victoria) Go to UniProtKB:  P42212

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CRO	A, B, C, D	L-PEPTIDE LINKING	C15 H17 N3 O5		THR, TYR, GLY

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.4 Å
• R-Value Free: 0.280 
• R-Value Work: 0.204 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 83.480	α = 90.00
b = 85.370	β = 90.00
c = 140.060	γ = 90.00

Software Package:

Software Name	Purpose
X-PLOR	refinement
CCP4	data scaling
MOSFLM	data reduction
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1999-02-09 
• Released Date: 2000-11-17 
• Deposition Author(s): Battistutta, R., Negro, A., Zanotti, G.

Revision History 

• Version 1.0: 2000-11-17
  Type: Initial release
• Version 1.1: 2008-04-26
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance
• Version 1.3: 2018-03-14
  Type: Database references