3LLO

Crystal structure of the STAS domain of motor protein prestin (anion transporter SLC26A5)

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	6.5	293	1.8 M Ammonium sulfate, 4.5% (v/v) PEG 400, 0.1% (w/v) octyl-beta-D-glucopyranoside, 0.09 M MES, pH 6.5, VAPOR DIFFUSION, temperature 293.0K

Crystal Properties
Matthews coefficient	Solvent content
2.33	47.24

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 61.59	α = 90
b = 61.59	β = 90
c = 67.13	γ = 120

Symmetry
Space Group	P 31 2 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	CCD	ADSC QUANTUM 210		2009-09-08	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1	0.93	ESRF	ID14-1

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	1.57	28.408	99.3	0.055	0.055	8.5	11.3	20860	20860			21.4

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)
	1.57	1.65	97.6		0.496	0.496	3.9	10.1	2931

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	1.57	25	20831	20831	1062	99.143	0.156	0.156	0.154	0.196	RANDOM	25.149

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]
0.32	0.16		0.32		-0.47

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.989
r_dihedral_angle_4_deg	13.635
r_dihedral_angle_3_deg	11.167
r_scangle_it	8.556
r_dihedral_angle_1_deg	5.761
r_scbond_it	5.736
r_mcangle_it	3.902
r_rigid_bond_restr	2.949
r_mcbond_it	2.551
r_angle_refined_deg	2.108

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.989
r_dihedral_angle_4_deg	13.635
r_dihedral_angle_3_deg	11.167
r_scangle_it	8.556
r_dihedral_angle_1_deg	5.761
r_scbond_it	5.736
r_mcangle_it	3.902
r_rigid_bond_restr	2.949
r_mcbond_it	2.551
r_angle_refined_deg	2.108
r_chiral_restr	0.165
r_bond_refined_d	0.027
r_gen_planes_refined	0.011

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1031
Nucleic Acid Atoms
Solvent Atoms	103
Heterogen Atoms	10

Software

Software
Software Name	Purpose
SCALA	data scaling
PHASER	phasing
SHELX	phasing
DM	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
ADSC	data collection
MOSFLM	data reduction
SHELXD	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.