2BN4

A second FMN-binding site in yeast NADPH-cytochrome P450 reductase suggests a novel mechanism of electron transfer by diflavin reductase


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 2BF4PDB ENTRY 2BF4

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
152931.6 M AMMONIUM SULFATE 100 MM SODIUM CITRATE (PH 5.0) 1 MM FAD 1 MM NADPH T=20 C
Crystal Properties
Matthews coefficientSolvent content
2.5851

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 78.14α = 90
b = 77.843β = 90
c = 261.495γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray110CCDSBC-2MIRRORS2004-03-10MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 19-ID0.97918APS19-ID

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
12.95094.40.1116.95.43385124.8
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)
12.9375.80.5124.7

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 2BF42.9143.41229613292382.10.2330.2330.3RANDOM66.7
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]
31.22-6.19-25.03
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d22.8
c_scangle_it2.45
c_mcangle_it1.99
c_scbond_it1.52
c_angle_deg1.5
c_mcbond_it1.15
c_improper_angle_d0.98
c_bond_d0.008
c_bond_d_na
c_bond_d_prot
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d22.8
c_scangle_it2.45
c_mcangle_it1.99
c_scbond_it1.52
c_angle_deg1.5
c_mcbond_it1.15
c_improper_angle_d0.98
c_bond_d0.008
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms10028
Nucleic Acid Atoms
Solvent Atoms55
Heterogen Atoms248

Software

Software
Software NamePurpose
CNSrefinement
HKL-2000data reduction
SCALEPACKdata scaling
CNSphasing