ISDA

X-RAY DIFFRACTION

Crystallization Details

Method	pH	Temprature	Details
X-RAY DIFFRACTION	5.7	277	Protein solution (15 mg/mL CO-bound trout IV Hemoglobin, 0.025 M Sodium chloride, 0.010 M Tris-HCl pH 8.0) was mixed one to one with carbon monoxide flushed well solution to yield a final concentration of 22.5% PEG 1500 and 0.04-0.06 M MES/Acetate at pH 5.7. The solutions were pH-ed to verify that the crystallization conditions were at pH 5.7 due to the lower buffer molarity. Crystals were cryo-protected with 22.5% PEG 1500, 22.5% Ethylene glycol, 0.04-0.06 M MES/Acetate at pH 5.7 in a single step, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Unit Cell:

a: 57.455 Å b: 63.162 Å c: 78.702 Å α: 90.000° β: 93.100° γ: 90.000°

Symmetry:

Space Group: P 1 21 1

Crystal Properties:

Matthew's Coefficient: 2.2 Solvent Content: 44.7

Refinement Statistics

Diffraction ID	Structure Solution Method	Cross Validation Method	Resolution Limit (High)	Resolution Limit (Low)	Number of Reflections (Observed)	Number of Reflections (R-free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.350	39.294	120109	6037	97.384	0.172	0.212	20.160

Data Collection

Overall

Resolution Limit (High)	Resolution Limit (Low)	Percent Possible (Observed)	R Merge I (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
1.350	39.294	97.400	0.118	?	10.482	7.000	?	120196	?	?	?

Highest Resolution Shell

#	Resolution Limits (Low)	Resolution Limits (High)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.35	1.38	77.80	?	?	2.306	4.20	6375

Diffraction

Diffraction experiment

Crystal ID	Scattering Type	Data Collection Temprature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1		100 K

Radiation Source

Source	Type	Wavelength List	Synchrotron Site	Beamline
SYNCHROTRON	APS BEAMLINE 23-ID-D	0.97935	APS	23-ID-D

Software