Experiment: 4ETR

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3FSE	PDB ENTRY 3FSE, trimmed to the 4 helix module, side chains removed

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	293	19% PEG10K, 100 mM Na-acetate pH 4.6, SrCl2 20mM, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.91	35.61

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 40.576	α = 90
b = 71.219	β = 111.62
c = 48.781	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	110	CCD	ADSC QUANTUM 315r	mirrors	2009-04-17	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1	0.976250	ESRF	ID23-1

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	2.25	45.36	96.8	0.092	0.092	8.5	3.5	12342	11947	2.6	2.6	36.5

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)
1	2.25	2.37	96.2		0.485	0.485	2.6	3.5	1726

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 3FSE, trimmed to the 4 helix module, side chains removed	2.25	45.35	2.6	12342	11347	592	96.74	0.22381	0.22381	0.22079	0.28474	RANDOM	40.997

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]
5.93		3.1	-2.77		-0.88

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.55
r_dihedral_angle_3_deg	18.698
r_dihedral_angle_4_deg	16.455
r_dihedral_angle_1_deg	5.816
r_scangle_it	4.254
r_scbond_it	2.495
r_mcangle_it	1.566
r_angle_refined_deg	1.507
r_mcbond_it	0.816
r_chiral_restr	0.092

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.55
r_dihedral_angle_3_deg	18.698
r_dihedral_angle_4_deg	16.455
r_dihedral_angle_1_deg	5.816
r_scangle_it	4.254
r_scbond_it	2.495
r_mcangle_it	1.566
r_angle_refined_deg	1.507
r_mcbond_it	0.816
r_chiral_restr	0.092
r_bond_refined_d	0.015
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1908
Nucleic Acid Atoms
Solvent Atoms	21
Heterogen Atoms

Software

Software
Software Name	Purpose
ADSC	data collection
PHASER	phasing
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.