Experiment: 1YRL

Escherichia coli ketol-acid reductoisomerase

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1QMG	PDB entry 1QMG

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	9	291	ammonium sulfate, sodium bicine, pH 9.0, VAPOR DIFFUSION, HANGING DROP, temperature 291.0K

Crystal Properties
Matthews coefficient	Solvent content
3.7	66.9

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 226.882	α = 90
b = 226.882	β = 90
c = 118.853	γ = 120

Symmetry
Space Group	P 63

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	RIGAKU RAXIS IV	mirrors	2003-09-26	M	SINGLE WAVELENGTH

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

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	32.48	99.8	0.074	0.074	20.9	8.6	106858	106858

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)
	2.6	2.69	98.5		0.3	0.3	5.1	5.9	10653

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 1QMG	2.6	32.48	106782	106858	10702	99.8	0.227	0.227	0.223	0.2211	0.266	0.2628	Random	35.8

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]
3.538	-6.854		3.538		-7.077

RMS Deviations
Key	Refinement Restraint Deviation
c_angle_deg	1.22
c_bond_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	14443
Nucleic Acid Atoms
Solvent Atoms	416
Heterogen Atoms	45

Software

Software
Software Name	Purpose
CrystalClear	data reduction
AMoRE	phasing
CNS	refinement
CrystalClear	data scaling