X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Temperature 277.0
Details THIS IS THE HIGH-ACTIVITY ERYTHROCYTIC FORM OF HUMAN CARBONIC ANHYDRASE, CARBONIC ANHYDRASE II, OR CAII. CRYSTALLIZED IN 50 MM TRIS-HCL 2.4 M AMMONIUM SULFATE PH 8.5 AND 1 MM HGCL2 AT 4 DEG C (TILANDER, B., STRANDBERG, B. AND FRIDBORG, K. (1965). CRYSTAL STRUCTURE ON HUMAN ERYTHROCYTIC CARBONIC ANHYDRASE C. J. MOL. BIOL. 12, 740-760.) THE MERCURY IS SUBSEQUENTLY REMOVED BY MERCAPTOETHANOL. THE CRYSTAL IS SOAKED IN 0.6M KNO3 80 MM CITRATE 3M AMMONIUM SULFATE PH 6.0., temperature 277K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 42.7 α = 90
b = 41.7 β = 104.6
c = 73 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline

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
-- 1.9 -- -- -- -- -- -- -- -- 0.141 -- -- --
RMS Deviations
Key Refinement Restraint Deviation
t_bond_d 0.021
t_angle_deg 3.4
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2088
Nucleic Acid Atoms 0
Heterogen Atoms 6
Solvent Atoms 231

Software

Software
Software Name Purpose
TNT refinement