Experiment: 6IAH

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
other		Generic Helix

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6	295	0.2 M Magnesium chloride hexahydrate, 25% w/v Polyethyleneglycol 3350, 0.1 M Tris pH 8.5

Crystal Properties
Matthews coefficient	Solvent content
2.36	47.88

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.33	α = 90
b = 117	β = 90
c = 33.83	γ = 90

Symmetry
Space Group	P 21 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	PIXEL	DECTRIS PILATUS 6M		2017-11-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	BESSY BEAMLINE 14.1	0.9184	BESSY	14.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	CC (Half)	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	1.75	43.87	99.9	0.057	0.061	0.999	18.39	7.185		27374			29.416

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.75	1.8	99.7		0.473	0.51	0.964	3.63	7.134

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	Generic Helix	1.75	43.87	26033	1340	99.88	0.1874	0.1854	0.2255	RANDOM	31.558

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]
-3.32			-2.88		6.2

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.026
r_dihedral_angle_4_deg	18.782
r_dihedral_angle_3_deg	13.537
r_dihedral_angle_1_deg	5.947
r_angle_refined_deg	1.669
r_angle_other_deg	0.972
r_chiral_restr	0.108
r_bond_refined_d	0.017
r_gen_planes_refined	0.009
r_bond_other_d	0.002

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.026
r_dihedral_angle_4_deg	18.782
r_dihedral_angle_3_deg	13.537
r_dihedral_angle_1_deg	5.947
r_angle_refined_deg	1.669
r_angle_other_deg	0.972
r_chiral_restr	0.108
r_bond_refined_d	0.017
r_gen_planes_refined	0.009
r_bond_other_d	0.002
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1967
Nucleic Acid Atoms
Solvent Atoms	231
Heterogen Atoms	10

Software

Software
Software Name	Purpose
XDS	data reduction
XSCALE	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
Arcimboldo	phasing

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.