4HEY

Activity Enhancers of H64A Variant of Human Carbonic Anhydrase II Possess Multiple Binding Sites within and around the Enzyme Structure

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	CHESS BEAMLINE F1
Synchrotron site	CHESS
Beamline	F1
Temperature [K]	100
Detector technology	CCD
Collection date	2011-10-31
Detector	ADSC QUANTUM 270
Wavelength(s)	0.9
Spacegroup name	P 1 21 1
Unit cell lengths	42.418, 41.334, 71.958
Unit cell angles	90.00, 104.44, 90.00

Refinement procedure

Resolution	19.965 - 1.450
R-factor	0.1453
Rwork	0.143
R-free	0.18440
Structure solution method	MOLECULAR REPLACEMENT
RMSD bond length	0.009
RMSD bond angle	1.270
Data reduction software	DENZO
Data scaling software	SCALEPACK
Phasing software	PHENIX
Refinement software	PHENIX (1.7.2_869)

Data quality characteristics

	Overall
Low resolution limit [Å]	19.965
High resolution limit [Å]	1.450
Number of reflections	40399

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	8	298	Drops of 10 uL (0.3 mM protein; 100 mM small imidazole; 0.8 M sodium citrate; 50 mM Tris-HCl; pH 8.0) were equilibrated against the precipitant solution (1.6 M sodium citrate; 50 mM Tris-HCl; pH 8.0), VAPOR DIFFUSION, HANGING DROP, temperature 298K