3HHT

A mutant of the nitrile hydratase from Geobacillus pallidus having enhanced thermostability

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	295	30% PEG400, 100mM magnesium chloride, 100mM MES (2[N-Morpholino]ethanesulfonic acid), 10-40mg/ml protein, pH 6.5, vapor diffusion, hanging drop, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.29	46.29

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 105.832	α = 90
b = 105.832	β = 90
c = 83.723	γ = 90

Symmetry
Space Group	P 41 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	110	CCD	MARMOSAIC 225 mm CCD	mirrors	2007-07-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM14	0.979	ESRF	BM14

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	1.16	26.99	99.6	0.047		5.58		162627

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.16	1.2	100		0.3	4.1	5.41	16139

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	2dpp	1.16	26.99	162458	8144	99.49	0.128	0.127	0.144	RANDOM	15.944

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]
0.01			0.01		-0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.797
r_dihedral_angle_4_deg	17.36
r_sphericity_free	15.306
r_dihedral_angle_3_deg	11.94
r_scangle_it	6.806
r_dihedral_angle_1_deg	6.148
r_sphericity_bonded	5.946
r_scbond_it	5.032
r_mcangle_it	3.467
r_rigid_bond_restr	2.686
r_mcbond_it	2.536
r_angle_refined_deg	1.726
r_mcbond_other	1.324
r_angle_other_deg	0.986
r_chiral_restr	0.113
r_bond_refined_d	0.018
r_gen_planes_refined	0.014
r_gen_planes_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3506
Nucleic Acid Atoms
Solvent Atoms	522
Heterogen Atoms	3

Software

Software
Software Name	Purpose
d*TREK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
MxCuBE	data collection
d*TREK	data reduction