2ZFO

Structure of the partially unliganded met state of 400 kDa hemoglobin: Insights into ligand-induced structural changes of giant hemoglobins

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	293	7% PEG 10000, 0.2M Tris-HCl (pH 8.0), VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.64	53.49

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 110.96	α = 90
b = 110.96	β = 90
c = 271.58	γ = 120

Symmetry
Space Group	H 3 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	90	CCD	RIGAKU JUPITER 210	Rh-coated cylindrical bending mirror	2006-06-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL26B1	1.0000	SPring-8	BL26B1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.95	50	99.7	0.061	32.8	9.2	47042	47042		-3	22.9

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.95	2.02	99.4		0.337	5.8	7.2	4642

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-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 2D2M	1.95	39.22	46892	2332	99.2	0.169	0.202	RANDOM	29.5

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]
4.57			4.57		-9.14

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	18.6
c_scangle_it	2.84
c_scbond_it	2.03
c_mcangle_it	1.84
c_angle_deg	1.3
c_mcbond_it	1.26
c_improper_angle_d	0.95
c_bond_d	0.01
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4339
Nucleic Acid Atoms
Solvent Atoms	523
Heterogen Atoms	186

Software

Software
Software Name	Purpose
CNS	refinement
BSS	data collection
HKL-2000	data reduction
SCALEPACK	data scaling
MOLREP	phasing