2OLP

Structure and ligand selection of hemoglobin II from Lucina pectinata

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	COUNTER-DIFFUSION	7	298	Reactor: 0.2 mm inner diameter capillary with a three layer configuration (6 microL/ 3 microL/ 30 microL). Protein chamber: 30 mg/ml in 50 mM BIS-TRIS propane pH 7.0, 0.5 mM EDTA, agarose 0.08% (w/v). Precipitant chamber: Ammonium sulphate 2.0 M., Counter-diffusion, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3.05	59.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 73.918	α = 90
b = 73.918	β = 90
c = 152.355	γ = 90

Symmetry
Space Group	P 42 21 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	CCD	MAR CCD 165 mm		2004-07-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM16	0.97749	ESRF	BM16

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	1.93	20	99.6	0.05	28.81	10.5		32364			27.64

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	1.93	1.96	100	94	0.336	7	10.6	1587

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 (All)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1EBT	1.932	19.838	32318	1643	99.593	0.166	0.165	0.1932	RANDOM	30.42

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]
0.038			0.038		-0.076

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.756
r_dihedral_angle_4_deg	20.129
r_dihedral_angle_3_deg	13.33
r_dihedral_angle_1_deg	5.322
r_scangle_it	3.023
r_mcangle_it	2.641
r_scbond_it	2.343
r_mcbond_it	2.149
r_angle_refined_deg	1.841
r_nbtor_refined	0.307
r_metal_ion_refined	0.276
r_symmetry_vdw_refined	0.264
r_chiral_restr	0.247
r_symmetry_hbond_refined	0.226
r_nbd_refined	0.222
r_xyhbond_nbd_refined	0.194
r_bond_refined_d	0.013
r_gen_planes_refined	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2381
Nucleic Acid Atoms
Solvent Atoms	248
Heterogen Atoms	100

Software

Software
Software Name	Purpose
REFMAC	refinement
CNS	refinement
SCALEPACK	data scaling
PDB_EXTRACT	data extraction
DENZO	data reduction
CNS	phasing