Experiment: 1YZI

A novel quaternary structure of human carbonmonoxy hemoglobin

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1HHO	PDB entry 1HHO

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	SMALL TUBES	7.1	298	sodium/potassium phosphate, toluene, pH 7.1, SMALL TUBES, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.56	51

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 61.464	α = 90
b = 61.464	β = 90
c = 174.75	γ = 90

Symmetry
Space Group	P 41 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	120	IMAGE PLATE	RIGAKU RAXIS II	mirrors	2002-04-26	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	2.07	58	95.2	0.067	13.1	5.6	20310	21330			29

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)
	2.07	2.2	76.7		0.253	2	2.7	2522

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 1HHO	2.07	58	20310	20310	1043	100	0.224	0.208	0.208	0.2027	0.257	0.2497	RANDOM	47.4

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]
3.03			3.03		-6.07

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	20.2
c_angle_deg	2.2
c_improper_angle_d	1.81
c_bond_d	0.018

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2192
Nucleic Acid Atoms
Solvent Atoms	136
Heterogen Atoms	111

Software

Software
Software Name	Purpose
CNS	refinement
bioteX	data reduction
CCP4	data scaling
AMoRE	phasing