1O5K

Crystal structure of Dihydrodipicolinate synthase (TM1521) from Thermotoga maritima at 1.80 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION,SITTING DROP,NANODROP	7.5	293	28% PEG-400, 0.1M Sodium HEPES pH 7.5, 0.2M Calcium chloride dihydrate, VAPOR DIFFUSION,SITTING DROP,NANODROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.12	41.42

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 54.672	α = 90
b = 140.768	β = 90
c = 155.943	γ = 90

Symmetry
Space Group	C 2 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 4	bent conical Si-mirror (Rh coating)	2003-04-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 14-BM-C		APS	14-BM-C

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.61	50	100	0.096	12.18	4.25	68682	68682			30.5

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.61	1.67	65.47		0.712	1.04	1.74	5042

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	1DHP	1.8	35.61	49783	2656	93.33	0.14174	0.13941	0.18593	RANDOM	25.358

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]
1.84			-0.51		-1.32

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.241
r_dihedral_angle_4_deg	20.002
r_dihedral_angle_3_deg	13.619
r_scangle_it	7.692
r_dihedral_angle_1_deg	6.139
r_scbond_it	5.534
r_mcangle_it	3.014
r_mcbond_it	2.275
r_angle_refined_deg	1.608
r_angle_other_deg	0.857
r_symmetry_vdw_other	0.342
r_symmetry_hbond_refined	0.248
r_symmetry_vdw_refined	0.226
r_nbd_refined	0.221
r_nbd_other	0.184
r_xyhbond_nbd_refined	0.158
r_chiral_restr	0.099
r_nbtor_other	0.087
r_bond_refined_d	0.017
r_gen_planes_refined	0.007
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4539
Nucleic Acid Atoms
Solvent Atoms	508
Heterogen Atoms	1

Software

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