2QU1

Crystal Structure of a Cyclized GFP Variant

• PDB DOI: https://doi.org/10.2210/pdb2QU1/pdb

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


• Deposited: 2007-08-03 Released: 2007-09-11 
• Deposition Author(s): Bailey, L.J., McCoy, J.G., Bitto, E., Bingman, C.A., Fox, B.G., Wesenberg, G.E., Phillips Jr., G.N., Center for Eukaryotic Structural Genomics (CESG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.220 
• R-Value Work: 0.168 
• R-Value Observed: 0.171 

Literature

Crystal Structure of a Cyclized GFP Variant.

Bailey, L.J., McCoy, J.G., Bitto, E., Bingman, C.A., Fox, B.G., Wesenberg, G.E., Phillips Jr., G.N.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 27.29 kDa 
• Atom Count: 2,293 
• Modelled Residue Count: 232 
• Deposited Residue Count: 239 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Green fluorescent protein	A	239	Aequorea victoria	Mutation(s): 5  Gene Names: GFP
UniProt
Find proteins for P42212 (Aequorea victoria) Explore P42212  Go to UniProtKB:  P42212

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	B [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

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: 1.70 Å
• R-Value Free: 0.220 
• R-Value Work: 0.168 
• R-Value Observed: 0.171 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 51.46	α = 90
b = 61.99	β = 90
c = 70.02	γ = 90

Software Package:

Software Name	Purpose
SAINT	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
PROTEUM PLUS	data collection
SAINT	data reduction
SADABS	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-09-11 
Deposition Author(s): Bailey, L.J., McCoy, J.G., Bitto, E., Bingman, C.A., Fox, B.G., Wesenberg, G.E., Phillips Jr., G.N., Center for Eukaryotic Structural Genomics (CESG)

Revision History  

• Version 1.0: 2007-09-11
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2021-10-20
  Changes: Database references, Derived calculations
• Version 1.3: 2023-08-30
  Changes: Data collection, Refinement description
• Version 1.4: 2023-11-15
  Changes: Data collection