Experiment: 4NI1

Quaternary R CO-liganded hemoglobin structure in complex with a thiol containing compound

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1LJW	PDB ENTRY 1LJW

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	LIQUID DIFFUSION	6.4	298	20-30mg/mL protein, 3.0-3.4 M sodium/potassium phosphate, pH 6.4, LIQUID DIFFUSION, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.18	43.65

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.12	α = 90
b = 53.12	β = 90
c = 192.1	γ = 90

Symmetry
Space Group	P 41 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	IMAGE PLATE	RIGAKU RAXIS IV++		2013-09-07	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007	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	1.9	29.6	92.2	0.068	14.5	7.6	20987	20987			31.4

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	1.9	1.97	92.4		0.389	5.4	8.1

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	FOURIER SYNTHESIS	THROUGHOUT	PDB ENTRY 1LJW	1.9	29.59	20911	20911	1067	92.1	0.218	0.207	0.207	0.2032	0.259	0.2497	RANDOM	38.7

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]
1.76			1.76		-3.51

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	18.5
c_angle_deg	2
c_improper_angle_d	1.44
c_bond_d	0.014

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2169
Nucleic Acid Atoms
Solvent Atoms	233
Heterogen Atoms	168

Software

Software
Software Name	Purpose
CrystalClear	data collection
CNS	refinement
d*TREK	data reduction
d*TREK	data scaling
CNS	phasing