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- PDB-1qxt: Crystal structure of precyclized intermediate for the green fluor... -

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Basic information

Entry
Database: PDB / ID: 1qxt
TitleCrystal structure of precyclized intermediate for the green fluorescent protein R96A variant (A)
Componentsgreen-fluorescent protein
KeywordsLUMINESCENT PROTEIN / beta barrel / trapped intermediate / chromophore
Function / homology
Function and homology information


bioluminescence / generation of precursor metabolites and energy
Similarity search - Function
Green Fluorescent Protein / Green fluorescent protein / Green fluorescent protein, GFP / Green fluorescent protein-related / Green fluorescent protein / Green fluorescent protein / Beta Barrel / Mainly Beta
Similarity search - Domain/homology
Green fluorescent protein
Similarity search - Component
Biological speciesAequorea victoria (jellyfish)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2 Å
AuthorsBarondeau, D.P. / Putnam, C.D. / Kassmann, C.J. / Tainer, J.A. / Getzoff, E.D.
CitationJournal: Proc.Natl.Acad.Sci.USA
Title: Mechanism and energetics of green fluorescent protein chromophore synthesis revealed by trapped intermediate structures
Authors: Barondeau, D.P. / Putnam, C.D. / Kassmann, C.J. / Tainer, J.A. / Getzoff, E.D.
History
DepositionSep 8, 2003Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 23, 2003Provider: repository / Type: Initial release
Revision 1.1Apr 29, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 27, 2021Group: Database references / Category: database_2 / struct_ref_seq_dif
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ref_seq_dif.details
Revision 1.4Aug 23, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: green-fluorescent protein


Theoretical massNumber of molelcules
Total (without water)25,6921
Polymers25,6921
Non-polymers00
Water2,576143
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)51.928, 61.571, 69.832
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein green-fluorescent protein


Mass: 25691.842 Da / Num. of mol.: 1 / Fragment: residues 1-229 / Mutation: R96A F99S M153T V163A F64L S65T
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Aequorea victoria (jellyfish) / Gene: GFP / Production host: Escherichia coli (E. coli) / Strain (production host): JM109 / References: UniProt: P42212
#2: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 143 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.17 Å3/Da / Density % sol: 43.36 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 8
Details: PEG 4000, MAGNESIUM CHLORIDE, HEPES, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal grow
*PLUS
Method: vapor diffusion, hanging drop
Details: used microseeding., Barondeau, D.P., (2002) J.Am.Chem.Soc., 124, 3522.
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetailsChemical formula
110-15 mg/mlprotein1drop
250 mMHEPES1reservoirpH8.0
350 mM1reservoirMgCl2
419 %PEG40001reservoir

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL9-1 / Wavelength: 0.78 Å
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Mar 29, 1999
RadiationMonochromator: CURVED CRYSTAL / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.78 Å / Relative weight: 1
ReflectionResolution: 2→20 Å / Num. all: 15708 / Num. obs: 15550 / % possible obs: 99 % / Observed criterion σ(F): -3 / Observed criterion σ(I): -3 / Redundancy: 3.53 % / Biso Wilson estimate: 13.8 Å2 / Rsym value: 0.066 / Net I/σ(I): 18.2
Reflection shellResolution: 2→2.07 Å / Mean I/σ(I) obs: 3.3 / Rsym value: 0.372 / % possible all: 99.8
Reflection
*PLUS
Highest resolution: 2 Å / Num. measured all: 54856 / Rmerge(I) obs: 0.066
Reflection shell
*PLUS
% possible obs: 99.8 % / Rmerge(I) obs: 0.372

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Processing

Software
NameVersionClassification
CNS1refinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 1ema

1ema


Resolution: 2→19.74 Å / Rfactor Rfree error: 0.01 / Data cutoff high absF: 606673.23 / Data cutoff high rms absF: 606673.23 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.257 728 4.9 %RANDOM
Rwork0.218 ---
all0.218 15708 --
obs0.218 14709 93.9 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 26.5548 Å2 / ksol: 0.385569 e/Å3
Displacement parametersBiso mean: 28.2 Å2
Baniso -1Baniso -2Baniso -3
1--8.72 Å20 Å20 Å2
2---0.09 Å20 Å2
3---8.81 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.31 Å0.24 Å
Luzzati d res low-5 Å
Luzzati sigma a0.27 Å0.21 Å
Refinement stepCycle: LAST / Resolution: 2→19.74 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1782 0 0 143 1925
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.012
X-RAY DIFFRACTIONc_bond_d_na
X-RAY DIFFRACTIONc_bond_d_prot
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_d_na
X-RAY DIFFRACTIONc_angle_d_prot
X-RAY DIFFRACTIONc_angle_deg1.6
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d28.2
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d1.36
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it1.261.5
X-RAY DIFFRACTIONc_mcangle_it1.942
X-RAY DIFFRACTIONc_scbond_it2.112
X-RAY DIFFRACTIONc_scangle_it3.182.5
LS refinement shellResolution: 2→2.13 Å / Rfactor Rfree error: 0.032 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.356 125 5.4 %
Rwork0.271 2172 -
obs--89.4 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN.GFP.PARAMPROTEIN.GFP.TOP
X-RAY DIFFRACTION2WATER_REP.PARAMWATER.TOP
Refinement
*PLUS
Lowest resolution: 20 Å / Rfactor Rfree: 0.258
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg28.2
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg1.36

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