1S5T

Crystal Structure Analysis of a mutant of DIHYDRODIPICOLINATE SYNTHASE--residue thr44 to val44

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1DHP	PDB ENTRY 1DHP

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	10	277	Drop contains: potassium phosphate (0.0012ml, 1.8M, pH10), N-octyl-beta-R-glucopyrandoside (0.0006ml, 6% w/v), VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
3.62	65.72

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 121.059	α = 90
b = 121.059	β = 90
c = 110.882	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	110	IMAGE PLATE	MARRESEARCH		2002-11-10	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)	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	50	94.3	0.093				39811

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)
	2.3	2.38	87.7		0.32

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1DHP	2.3	20.99	37720	1994	100	0.17966	0.17966	0.17788	0.21343	RANDOM	25.302

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]
-0.35	-0.17		-0.35		0.52

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.22
r_scangle_it	2.467
r_scbond_it	1.419
r_angle_refined_deg	1.38
r_angle_other_deg	0.893
r_mcangle_it	0.884
r_mcbond_it	0.459
r_nbd_other	0.239
r_symmetry_vdw_other	0.208
r_nbd_refined	0.199
r_nbtor_other	0.153
r_symmetry_vdw_refined	0.148
r_xyhbond_nbd_refined	0.14
r_symmetry_hbond_refined	0.14
r_chiral_restr	0.079
r_bond_refined_d	0.011
r_gen_planes_other	0.006
r_gen_planes_refined	0.005
r_bond_other_d	0.002
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_deg
r_nbtor_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4312
Nucleic Acid Atoms
Solvent Atoms	321
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling