1UIS

The 2.0 crystal structure of eqFP611, a far-red fluorescent protein from the sea anemone Entacmaea quadricolor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.253 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

The 2.0A crystal structure of eqFP611, a far-red fluorescent protein from the sea anemone Entacmaea quadricolor

Petersen, J.Wilmann, P.G.Beddoe, T.Oakley, A.J.Devenish, R.J.Prescott, M.Rossjohn, J.

(2003) J Biol Chem 278: 44626-44631

  • DOI: https://doi.org/10.1074/jbc.M307896200
  • Primary Citation of Related Structures:  
    1UIS

  • PubMed Abstract: 

    We have crystallized and subsequently determined to 2.0-A resolution the crystal structure of eqFP611, a far red fluorescent protein from the sea anemone Entacmaea quadricolor. The structure of the protomer, which adopts a beta-can topology, is similar to that of the related monomeric green fluorescent protein (GFP). The quaternary structure of eqFP611, a tetramer exhibiting 222 symmetry, is similar to that observed for the more closely related red fluorescent protein DsRed and the chromoprotein Rtms5. The unique chromophore sequence (Met63-Tyr64-Gly65) of eqFP611, adopts a coplanar and trans conformation within the interior of the beta-can fold. Accordingly, the eqFP611 chromophore adopts a significantly different conformation in comparison to the chromophore conformation observed in GFP, DsRed, and Rtms5. The coplanar chromophore conformation and its immediate environment provide a structural basis for the far red, highly fluorescent nature of eqFP611. The eqFP611 structure extends our knowledge on the range of conformations a chromophore can adopt within closely related members of the green fluorescent protein family.


  • Organizational Affiliation

    The Protein Crystallography Unit, School of Biomedical Sciences, Monash University, Victoria, Australia.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
red fluorescent protein FP611
A, B
231Entacmaea quadricolorMutation(s): 1 
UniProt
Find proteins for Q8ISF8 (Entacmaea quadricolor)
Go to UniProtKB:  Q8ISF8
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.253 
  • Space Group: P 65 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 77.935α = 90
b = 77.935β = 90
c = 327.472γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-10-21
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-12-27
    Changes: Data collection, Database references, Derived calculations