2A6L

Dihydrodipicolinate synthase (E. coli)- mutant R138H

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	10	285	protein solution (~5 mg/ml in Tris.HCl 20 mM, pH 8, 2.5 uL), precipitant (K2HPO4 1.8 M, pH 10, 1.2 uL), and N-octyl- -R-glucopyranoside (6% w/v, 0.6 uL), VAPOR DIFFUSION, temperature 12K

Crystal Properties
Matthews coefficient	Solvent content
3.76	67.32

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 121.016	α = 90
b = 121.016	β = 90
c = 111.414	γ = 120

Symmetry
Space Group	P 31 2 1

Diffraction

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

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.05	33.3	99.7				59240

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)
	2.05	33.3	99.7		0.087	10.4	4.2	59240

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	2.05	32.27	56283	2951	100	0.184	0.18252	0.2128	RANDOM	23.345

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	-0.12		-0.25		0.37

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.763
r_dihedral_angle_4_deg	14.627
r_dihedral_angle_3_deg	14.349
r_dihedral_angle_1_deg	5.893
r_scangle_it	1.87
r_scbond_it	1.11
r_angle_refined_deg	1.106
r_angle_other_deg	0.799
r_mcangle_it	0.685
r_mcbond_it	0.356
r_symmetry_vdw_other	0.219
r_nbd_refined	0.213
r_nbd_other	0.173
r_nbtor_refined	0.16
r_xyhbond_nbd_refined	0.12
r_symmetry_hbond_refined	0.111
r_symmetry_vdw_refined	0.09
r_nbtor_other	0.086
r_metal_ion_refined	0.082
r_chiral_restr	0.065
r_mcbond_other	0.052
r_bond_refined_d	0.007
r_gen_planes_refined	0.003
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4323
Nucleic Acid Atoms
Solvent Atoms	534
Heterogen Atoms	2

Software

Software
Software Name	Purpose
REFMAC	refinement
AMoRE	phasing