1ARZ

ESCHERICHIA COLI DIHYDRODIPICOLINATE REDUCTASE IN COMPLEX WITH NADH AND 2,6 PYRIDINE DICARBOXYLATE

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.5		PROTEIN WAS CRYSTALLIZED FROM 23-26% PEG 8000, IN 160-180 MM POTASSIUM PHOSPHATE, 100 MM SODIUM CACODYLATE PH 7.5

Crystal Properties
Matthews coefficient	Solvent content
2.42	50

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 137.6	α = 90
b = 123.8	β = 90
c = 66.6	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	294	AREA DETECTOR	SIEMENS		1996-08-01	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RUH2R

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.6	25	90	0.04	0.081	15.9	3.7		32245		0.5

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.6	2.76	74		0.126	0.269	2	1.8

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 1DIH	2.6	20	32222		89.9	0.214	0.214	0.297	RANDOM	33.7

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]
2.99			-0.71		-2.28

RMS Deviations
Key	Refinement Restraint Deviation
x_dihedral_angle_d	25
x_angle_deg	1.9
x_improper_angle_d	1.7
x_bond_d	0.016
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7878
Nucleic Acid Atoms
Solvent Atoms	179
Heterogen Atoms	175

Software

Software
Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
XENGEN	data reduction
XENGEN	data scaling
X-PLOR	phasing