Biological Assembly 1  

 3D View: Structure | Electron Density

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 26906.35 
• Atom Count: 1800 
• Residue Count: 236 
• Unique protein chains: 1

2DUG

crystal structure of a green fluorescent protein S65T/H148N at pH 5

• DOI: 10.2210/pdb2DUG/pdb

• Classification: LUMINESCENT PROTEIN
• Organism(s): Aequorea victoria
• Expression System: Escherichia coli
• Mutation(s): 2 


• Deposited: 2006-07-23 Released: 2007-07-10 
• Deposition Author(s): Shu, X., Remington, S.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.4 Å
• R-Value Free: 0.241 
• R-Value Work: 0.177 

Literature

Ultrafast excited-state dynamics in the green fluorescent protein variant S65T/H148D. 1. Mutagenesis and structural studies.

Shu, X., Kallio, K., Shi, X., Abbyad, P., Kanchanawong, P., Childs, W., Boxer, S.G., Remington, S.J.

(2007) Biochemistry 46: 12005-12013

• PubMed: 17918959 
• DOI: 10.1021/bi7009037
• Primary Citation of Related Structures:  
  2DUI, 2DUH, 2DUF, 2DUE


• PubMed Abstract: 
  

Wild type green fluorescent protein (wt-GFP) and the variant S65T/H148D each exhibit two absorption bands, A and B, which are associated with the protonated and deprotonated chromophores, respectively. Excitation of either band leads to green emission. In wt-GFP, excitation of band A ( approximately 395 nm) leads to green emission with a rise time of 10-15 ps, due to excited-state proton transfer (ESPT) from the chromophore hydroxyl group to an acceptor. This process produces an anionic excited-state intermediate I* that subsequently emits a green photon. In the variant S65T/H148D, the A band absorbance maximum is red-shifted to approximately 415 nm, and as detailed in the accompanying papers, when the A band is excited, green fluorescence appears with a rise time shorter than the instrument time resolution ( approximately 170 fs). On the basis of the steady-state spectroscopy and high-resolution crystal structures of several variants described herein, it is proposed that in S65T/H148D, the red shift of absorption band A and the ultrafast appearance of green fluorescence upon excitation of band A are due to a very short (

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Organizational Affiliation: 

Institute of Molecular Biology and Department of Physics, University of Oregon, Eugene, Oregon 97403-1229, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Green fluorescent protein	A	238	Aequorea victoria	Mutation(s): 2  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
C12	A	L-PEPTIDE LINKING	C15 H18 N3 O4		THR, TYR, GLY

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.4 Å
• R-Value Free: 0.241 
• R-Value Work: 0.177 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 51.072	α = 90.00
b = 62.524	β = 90.00
c = 69.072	γ = 90.00

Software Package:

Software Name	Purpose
TNT	phasing
d*TREK	data scaling
TNT	refinement
d*TREK	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-07-23 
• Released Date: 2007-07-10 
• Deposition Author(s): Shu, X., Remington, S.J.

Revision History 

• Version 1.0: 2007-07-10
  Type: Initial release
• Version 1.1: 2008-04-30
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance