1XYE

T-to-THigh Transitions in Human Hemoglobin: alpha Y42A deoxy low salt

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	batch	7	298	10% PEG 6000, 10 mM potassium phosphate, 100 mM potassium chloride, 3 mM sodium dithionite, 10 mg/ml Hb, pH 7.0, batch, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.57	52.19

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 97	α = 90
b = 99.3	β = 90
c = 66.2	γ = 90

Symmetry
Space Group	P 21 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	298	AREA DETECTOR	SDMS	graphite	1995-11-11	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	2.13		97.9	0.059	5.4	6.7	36379	36379

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)
	2.13	2.29	90.2		0.185	1.3	3.1	6440

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT and Local R-free	pdb entry 1RQ3	2.13	10	31618	31618	3555	97.55	0.19655	0.19156	0.24126	10 mutually exclusive test sets matched to pdb entry 1RQ3	19.671

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]
-0.58			0.94		-0.36

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	17.821
r_scangle_it	4.012
r_dihedral_angle_1_deg	3.951
r_scbond_it	2.514
r_angle_refined_deg	1.967
r_mcangle_it	1.492
r_angle_other_deg	1.189
r_mcbond_it	0.804
r_symmetry_vdw_other	0.279
r_nbd_refined	0.248
r_xyhbond_nbd_refined	0.224
r_nbd_other	0.207
r_xyhbond_nbd_other	0.199
r_symmetry_hbond_refined	0.178
r_symmetry_vdw_refined	0.149
r_chiral_restr	0.104
r_bond_refined_d	0.021
r_gen_planes_refined	0.008
r_gen_planes_other	0.007
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4366
Nucleic Acid Atoms
Solvent Atoms	171
Heterogen Atoms	172

Software

Software
Software Name	Purpose
REFMAC	refinement
SDMS	data reduction
SDMS	data scaling
X-PLOR	phasing