1GS3

High resolution crystal structure of PI delta-5-3-Ketosteroid Isomerase mutants Y30F/Y55F/Y115F/D38N (Y32F/Y57F/Y119F/D40N, PI numbering)complexed with equilenin at 2.1 A resolution


X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
pH 4.6
Details pH 4.60

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 36.32 α = 90
b = 96.24 β = 90
c = 74.43 γ = 90
Symmetry
Space Group C 2 2 21

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 298
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MACSCIENCE -- --
Diffraction Radiation
Monochromator Protocol
GRAPHITE SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE M18XHF -- -- --

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
2.1 30 92.4 -- 0.143 -- 3.0 -- 121141 -- 1.0 --
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)
2.1 2.18 90.2 -- 0.314 2.6 1.5 --

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 2.1 30.0 -- 1.0 -- 121141 -- 92.4 -- 0.2129 0.2129 0.2753 RANDOM
RMS Deviations
Key Refinement Restraint Deviation
c_angle_deg 1.25064
c_bond_d 0.007485
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 957
Nucleic Acid Atoms 0
Heterogen Atoms 20
Solvent Atoms 38

Software

Software
Software Name Purpose
CNS refinement version: 1.1
DENZO data reduction
SCALEPACK data scaling
AMoRE phasing