3QQR

Crystal structure of Parasponia hemoglobin; Differential Heme Coordination is Linked to Quaternary Structure

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	298	1.6M Ammonium sulfate, 10% Dioxane, 0.1M MES, 0.1 M phenol, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.4	48.85

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 55.04	α = 90
b = 72.04	β = 90
c = 88.32	γ = 90

Symmetry
Space Group	P 21 21 21

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		2007-03-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200	1.5418

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	2.16	39.19	99	0.043	20.6	5.94		18471

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)
1	2.16	2.215	92		0.307	1.28	4.9

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-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 3QQQ	2.16	39.19	17535	936	94.84	0.22752	0.22443	0.28564	RANDOM	41.583

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]
			-0.03		0.03

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.788
r_dihedral_angle_3_deg	17.635
r_dihedral_angle_4_deg	16.208
r_dihedral_angle_1_deg	4.939
r_scangle_it	3.378
r_scbond_it	1.981
r_angle_refined_deg	1.468
r_mcangle_it	1.423
r_mcbond_it	0.752
r_symmetry_vdw_refined	0.324
r_nbtor_refined	0.31
r_xyhbond_nbd_refined	0.28
r_nbd_refined	0.273
r_symmetry_hbond_refined	0.208
r_chiral_restr	0.093
r_metal_ion_refined	0.058
r_bond_refined_d	0.013
r_gen_planes_refined	0.007
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2342
Nucleic Acid Atoms
Solvent Atoms	141
Heterogen Atoms	116

Software

Software
Software Name	Purpose
CrystalClear	data collection
AMoRE	phasing
REFMAC	refinement
d*TREK	data reduction
d*TREK	data scaling