1NGK

Crystallographic Structure of Mycobacterium tuberculosis Hemoglobin O

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.25	277	ammonium sulphate, pH 7.25, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.84	56.38

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 187.034	α = 90
b = 187.034	β = 90
c = 274.861	γ = 90

Symmetry
Space Group	I 41 2 2

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	MAR scanner 345 mm plate		2001-08-07	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	MARRESEARCH		2002-02-21	M	MAD
3	1	100	CCD	MARRESEARCH		2002-02-21
4	1	100	CCD	MARRESEARCH		2002-02-21

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE BW7B		EMBL/DESY, Hamburg	BW7B
2	SYNCHROTRON	ESRF BEAMLINE ID29	1.7387	ESRF	ID29
3	SYNCHROTRON	ESRF BEAMLINE ID29	1.7404	ESRF	ID29
4	SYNCHROTRON	ESRF BEAMLINE ID29	0.9801	ESRF	ID29

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	2.11	50	99.67	0.081	16	3	131238	131238

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.11	2.15	97.5		0.489	2.8	1.5

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	2.11	50	131238	131238	6934	99.67	0.18768	0.18768	0.18567	0.22586	RANDOM	25.363

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]
0.09			0.09		-0.19

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	4.565
r_scangle_it	3.608
r_scbond_it	2.531
r_mcangle_it	1.985
r_angle_refined_deg	1.25
r_mcbond_it	1.07
r_xyhbond_nbd_refined	0.145
r_symmetry_hbond_refined	0.139
r_chiral_restr	0.086
r_gen_planes_refined	0.011
r_bond_refined_d	0.01
r_bond_other_d
r_angle_other_deg
r_dihedral_angle_2_deg
r_gen_planes_other
r_nbd_refined
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	12856
Nucleic Acid Atoms
Solvent Atoms	1618
Heterogen Atoms	630

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
SOLVE	phasing