1DTZ

STRUCTURE OF CAMEL APO-LACTOFERRIN DEMONSTRATES ITS DUAL ROLE IN SEQUESTERING AND TRANSPORTING FERRIC IONS SIMULTANEOUSLY:CRYSTAL STRUCTURE OF CAMEL APO-LACTOFERRIN AT 2.6A RESOLUTION.


X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Microdialysis
pH 8
Temperature 277.0
Details TRIS HCl ETHANOL TRISODIUM CITRATE, pH 8.0, MICRODIALYSIS, temperature 277K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 175.84 α = 90
b = 80.92 β = 92.35
c = 56.35 γ = 90
Symmetry
Space Group C 1 2 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 293
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 1999-06-29
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE RIGAKU RU200 -- -- --

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
2.6 20 98.0 0.11 -- -- 2.98 67416 22549 -- -3.0 42.1
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)
2.6 2.7 91.0 0.201 -- -- 2.2 2057

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
-- 2.65 11.94 -- 0.0 67416 22397 1087 98.0 0.216 0.198 0.198 0.266 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 2.65 2.81 -- 161 3349 0.347 0.37 0.029 92.9
Temperature Factor Modeling
Temperature Factor Value
Isotropic Thermal Model RESTRAINED
Mean Isotropic B 52.6
Anisotropic B[1][1] 0.56
Anisotropic B[1][2] 0.0
Anisotropic B[1][3] -2.46
Anisotropic B[2][2] -0.95
Anisotropic B[2][3] 0.0
Anisotropic B[3][3] 0.4
RMS Deviations
Key Refinement Restraint Deviation
c_bond_d 0.013
c_mcangle_it 3.49
c_scbond_it 2.76
c_angle_deg 2.5
c_mcbond_it 2.04
c_improper_angle_d 1.78
c_scangle_it 4.3
c_dihedral_angle_d 23.3
Coordinate Error
Parameter Value
Luzzati ESD (Observed) 0.34
Luzzati Sigma A (Observed) 0.53
Luzzati Resolution Cutoff (Low) 5.0
Luzzati ESD (R-Free Set) 0.45
Luzzati Sigma A (R-Free Set) 0.54
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 5284
Nucleic Acid Atoms 0
Heterogen Atoms 0
Solvent Atoms 227

Software

Software
Software Name Purpose
DENZO data reduction
SCALEPACK data scaling
AMoRE phasing
CNS refinement version: 0.9