1HQ2

CRYSTAL STRUCTURE OF A TERNARY COMPLEX OF E.COLI HPPK(R82A) WITH MGAMPCPP AND 6-HYDROXYMETHYL-7,8-DIHYDROPTERIN AT 1.25 ANGSTROM RESOLUTION


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1EQO 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP4.6292PEG4000, MAGNESIUM CHLORIDE, ACETATE, GLYCEROL , pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 292.0K
Crystal Properties
Matthews coefficientSolvent content
1.9233.45

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 73.372α = 90
b = 37.843β = 117.18
c = 58.018γ = 90
Symmetry
Space GroupC 1 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 4MIRROR2000-11-12MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS BEAMLINE X9B0.96394NSLSX9B

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
11.253099.60.09212.28753.211393453934512.3
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
1.251.29990.5711.6783.0793863

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (I)Cut-off Sigma (F)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (All)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTFREE R1EQO1.2530243725226465193294.60.13370.09680.10660.1319RANDOM15.307
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
Coordinate Error
Structure Solution MethodRefinement High ResolutionRefinement Low Resolution
912971644.5
RMS Deviations
KeyRefinement Restraint Deviation
s_anti_bump_dis_restr0.199
s_zero_chiral_vol0.156
s_non_zero_chiral_vol0.143
s_approx_iso_adps0.079
s_similar_adp_cmpnt0.044
s_from_restr_planes0.031
s_angle_d0.027
s_rigid_bond_adp_cmpnt0.016
s_bond_d0.011
s_similar_dist
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1287
Nucleic Acid Atoms
Solvent Atoms333
Heterogen Atoms64

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
SHELXL-97refinement