3SEX

Ni-mediated Dimer of Maltose-binding Protein A216H/K220H by Synthetic Symmetrization (Form II)

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	290	0.2M SODIUM IODIDE, 2.2M AMMONIUM SULFATE, pH 8.0, vapor diffusion, hanging drop, temperature 290K

Crystal Properties
Matthews coefficient	Solvent content
2.4	48.83

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 60.56	α = 90
b = 67.5	β = 90
c = 191.44	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 315		2010-12-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-C	0.9792	APS	24-ID-C

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	1.95	63.659	96.2	0.144	10.09			56472		-3	21.774

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	1.95	2.05	89		0.385	2.28

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	1.95	63.659	1.99	56472	2822	97.1	0.1923	0.1898	0.2383	14.8124

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]
-0.6784			-3.1408		3.8192

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	11.54
f_angle_d	1.021
f_chiral_restr	0.068
f_bond_d	0.007
f_plane_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5664
Nucleic Acid Atoms
Solvent Atoms	531
Heterogen Atoms	74

Software

Software
Software Name	Purpose
XSCALE	data scaling
PHASER	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.