3MAY

Crystal structure of a secreted Mycobacterium tuberculosis heme-binding protein

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.76	55.39

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 72.671	α = 90
b = 72.671	β = 90
c = 173.909	γ = 90

Symmetry
Space Group	P 41

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray					2002-06-15	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.2.2	0.9792, 0.9795, 1.04	ALS	8.2.2

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	2.5	100	99.8	0.075	31.8	14.9		31089	1	1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	MAD	THROUGHOUT	2.5	72.68	30856	29261	1595	99.49	0.19776	0.1947	0.2557	RANDOM	58.279

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]
1.69			1.69		-3.39

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	43.086
r_dihedral_angle_3_deg	22.345
r_dihedral_angle_4_deg	12.624
r_dihedral_angle_1_deg	6.756
r_scangle_it	5.987
r_scbond_it	3.927
r_mcangle_it	2.357
r_rigid_bond_restr	2.296
r_angle_refined_deg	1.979
r_mcbond_it	1.445
r_chiral_restr	0.134
r_bond_refined_d	0.02
r_gen_planes_refined	0.011

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5323
Nucleic Acid Atoms
Solvent Atoms	56
Heterogen Atoms

Software

Software
Software Name	Purpose
HKL-2000	data collection
MLPHARE	phasing
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling