Experiment: 7A0X

Structure of dimeric sodium proton antiporter NhaA, at pH 6.0, crystallized with chimeric Fab antibodies

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	7A0W

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.2	292	100 mM Tris-HCl pH 8.2, 50 mM BaCl2, 50 mM CaCl2, 33 % PEG400, soaked at pH 6.0

Crystal Properties
Matthews coefficient	Solvent content
4.1	66.77

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 113.01	α = 90
b = 91.713	β = 109.798
c = 139.997	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	100	PIXEL	DECTRIS PILATUS 6M-F		2017-10-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PETRA III, EMBL c/o DESY BEAMLINE P13 (MX1)	0.976	PETRA III, EMBL c/o DESY	P13 (MX1)

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	2.37	24.9	94.4	0.16	0.999	17.8	20.4		69454			62.04

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.37	2.68	64.3		2.75	0.509	1.7	18.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	7A0W	2.37	24.9	1.35	69423	2219	63.14	0.206	0.2048	0.2045	0.2412	0.2401	77.87

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	10.3291
f_angle_d	0.5071
f_chiral_restr	0.0402
f_plane_restr	0.0036
f_bond_d	0.0018

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	11849
Nucleic Acid Atoms
Solvent Atoms	177
Heterogen Atoms	222

Software

Software
Software Name	Purpose
MxCuBE	data collection
PHENIX	refinement
STARANISO	data scaling
XDS	data reduction
PHASER	phasing
Coot	model building