3NQ8

Optimization of the in silico designed Kemp eliminase KE70 by computational design and directed evolution R4 8/5A

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.3	292	0.1M Ammonium Nitrat, 20% PEG 3350, pH 6.3, VAPOR DIFFUSION, SITTING DROP, temperature 292K

Crystal Properties
Matthews coefficient	Solvent content
1.88	34.45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.756	α = 90
b = 52.756	β = 90
c = 153.694	γ = 90

Symmetry
Space Group	P 43 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray		CCD			2008-12-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4	0.939	ESRF	ID14-4

Data Collection

Overall
ID #	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
1	1.4	50	97.9	0.058	0.053	57.28	20.5	43950	43027			14.63

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.4	1.42	100		0.243	0.211	13.6	23.1	2163

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1JCJ	1.4	49.88	40785	2155	97.88	0.17492	0.17408	0.1903	RANDOM	14.627

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]
0.25			0.25		-0.5

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.174
r_dihedral_angle_4_deg	14.869
r_dihedral_angle_3_deg	10.883
r_dihedral_angle_1_deg	5.928
r_sphericity_free	3.946
r_scangle_it	3.176
r_sphericity_bonded	2.384
r_scbond_it	2.123
r_mcangle_it	1.354
r_rigid_bond_restr	1.244
r_angle_refined_deg	1.133
r_mcbond_it	0.824
r_chiral_restr	0.071
r_bond_refined_d	0.007
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1801
Nucleic Acid Atoms
Solvent Atoms	166
Heterogen Atoms	17

Software

Software
Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling