1XPY

Structural Basis for Catalytic Racemization and Substrate Specificity of an N-Acylamino Acid Racemase Homologue from Deinococcus radiodurans

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	8	298	lithium sulfate, PEG 4000, pH 8.0, VAPOR DIFFUSION, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.47	50.27

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 116.159	α = 90
b = 116.159	β = 90
c = 120.426	γ = 90

Symmetry
Space Group	P 4

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	113	IMAGE PLATE	RIGAKU RAXIS		2003-11-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL12B2	0.8	SPring-8	BL12B2

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	2.3	30	98.3	0.096	8.6		1416552	66037

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.3	2.38	99.2

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	PDB ENTRY 1R0M	2.3	30	66037	3511	98.29	0.17399	0.17121	0.22742	RANDOM	23.881

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]
0.49			0.49		-0.97

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.449
r_scangle_it	1.694
r_mcangle_it	1.692
r_angle_refined_deg	1.321
r_mcbond_it	0.995
r_scbond_it	0.991
r_angle_other_deg	0.745
r_symmetry_vdw_other	0.268
r_nbd_other	0.262
r_symmetry_hbond_refined	0.23
r_nbd_refined	0.228
r_xyhbond_nbd_refined	0.215
r_nbtor_other	0.089
r_symmetry_vdw_refined	0.082
r_chiral_restr	0.076
r_bond_refined_d	0.012
r_gen_planes_refined	0.005
r_gen_planes_other	0.003
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	11236
Nucleic Acid Atoms
Solvent Atoms	842
Heterogen Atoms	30

Software

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