Experiment: 1NWI

Crystal structure of CO-HbI transformed to an unligated state

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3SDH	PDB entry 3SDH

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	SMALL TUBES	7.5	296	Sodium and Potassium phosphate, pH 7.5, SMALL TUBES, temperature 296K

Crystal Properties
Matthews coefficient	Solvent content
2.18	43.06

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 83.81	α = 90
b = 44.21	β = 115.38
c = 87.12	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	298	IMAGE PLATE	RIGAKU RAXIS IIC	Yale Mirrors	2001-01-29	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)	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	2.5	40	95.3	0.077	0.077	11.5	3.8	19646	19646	1	1	25.7

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.5	2.59	85.6		0.239	0.239

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 (All)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 3SDH	2.5	30.95	19623	19623	949	96.2	0.197	0.194	0.194	0.1889	0.218	0.2118	RANDOM	27.9

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]
0.52		0.26	-1.59		1.08

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	17.6
c_angle_deg	1.1
c_improper_angle_d	1.09
c_bond_d	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4464
Nucleic Acid Atoms
Solvent Atoms	148
Heterogen Atoms	172

Software

Software
Software Name	Purpose
CNS	refinement
SCALEPACK	data scaling
EPMR	phasing