4X1U

The structure of AhpE from Mycobacterium tuberculosis revisited

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.5	291	1.8M sodium malonate pH 5.0, 0.1M sodium acetate pH 4.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.63	53.24

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 147.994	α = 90
b = 147.994	β = 90
c = 33.711	γ = 90

Symmetry
Space Group	I 4

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	113	CCD	ADSC QUANTUM 210		2001-01-01	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.2	1.00000, 0.97937, 0.97918, 0.95370	ALS	5.0.2

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	1.87	46.8	99.59	1.91			28807

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		THROUGHOUT	1.87	46.8	30761	1828	99.59	0.1533	0.1514	0.1832	RANDOM	23.303

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]
-0.52			-0.52		1.03

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.15
r_dihedral_angle_3_deg	11.336
r_dihedral_angle_4_deg	10.199
r_dihedral_angle_1_deg	7.187
r_mcangle_it	3.504
r_mcbond_other	2.495
r_mcbond_it	2.494
r_angle_refined_deg	1.931
r_angle_other_deg	1.32
r_chiral_restr	0.124
r_bond_refined_d	0.02
r_gen_planes_refined	0.011
r_bond_other_d	0.007
r_gen_planes_other	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2462
Nucleic Acid Atoms
Solvent Atoms	239
Heterogen Atoms	30

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
Coot	model building
SOLVE	phasing
SCALEPACK	data scaling
HKL-2000	data reduction