1LUW

CATALYTIC AND STRUCTURAL EFFECTS OF AMINO-ACID SUBSTITUTION AT HIS 30 IN HUMAN MANGANESE SUPEROXIDE DISMUTASE: INSERTION OF VAL CGAMMA INTO THE SUBSTRATE ACCESS CHANNEL


X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 8
Temperature 294.0
Details 50 mM imidazole/malate, 2.5 M ammonium sulfate, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 294K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 79.36 α = 90
b = 79.36 β = 90
c = 242.58 γ = 120
Symmetry
Space Group P 61 2 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 272
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1999-10-31
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE SIEMENS 1.5418 -- --

Data Collection

Overall
Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) R Sym I (Observed) Net I Over Average Sigma (I) Redundancy Number Reflections (All) Number Reflections (Observed) Observed Criterion Sigma (F) Observed Criterion Sigma (I) B (Isotropic) From Wilson Plot
2.3 17 93.4 -- 0.075 -- 2.06 -- 19640 -- -3.0 31.2
High Resolution Shell
Resolution (High) Resolution (Low) Percent Possible (All) R Merge I (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All)
2.3 2.34 91.3 -- 0.334 2.55 1.45 648

Refinement

Statistics
Structure Solution Method Refinement High Resolution Refinement Low Resolution Cut-off Sigma (I) Cut-off Sigma (F) Number of Reflections (All) Number of Reflections (Observed) Number of Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work R-Free R-Free Selection Details
MOLECULAR REPLACEMENT 2.3 16.81 -- 0.0 19640 19618 1932 93.5 -- 0.239 0.239 0.282 RANDOM
High Resolution Shell
Refinement method Shell Resolution (High) Shell Resolution (Low) # of Reflections (Observed) # of Reflections (R-Free) # of Reflections (R-Work) R-Factor (R-Work) R-Factor (R-Free) R-Factor (R-Free Error) Percent Reflections (Observed)
X Ray Diffraction 2.3 2.44 -- 291 2845 0.28 0.313 0.018 92.5
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 32.1
Anisotropic B[1][1] 2.9
Anisotropic B[1][2] 4.1
Anisotropic B[1][3] 0.0
Anisotropic B[2][2] 2.9
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] -5.79
RMS Deviations
Key Refinement Restraint Deviation
c_improper_angle_d 0.83
c_dihedral_angle_d 21.3
c_angle_deg 1.3
c_bond_d 0.008
Coordinate Error
Parameter Value
Luzzati ESD (R-Free Set) 0.39
Luzzati Sigma A (R-Free Set) 0.34
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 3144
Nucleic Acid Atoms 0
Heterogen Atoms 12
Solvent Atoms 195

Software

Computing
Computing Package Purpose
MAR Data Reduction (intensity integration)
SCALEPACK Data Reduction (data scaling)
CNS Structure Solution
CNS 1.0 Structure Refinement
Software
Software Name Purpose
CNS version: 1.0 refinement
CNS model building
SCALEPACK data reduction
MAR data collection