2HT2

Structure of the Escherichia coli ClC chloride channel Y445H mutant and Fab complex

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	293	38% peg 300, 50mM Tris, 150 mM NaKTart, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.81	67.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 232.294	α = 90
b = 96.58	β = 131.43
c = 170.557	γ = 90

Symmetry
Space Group	C 1 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		2006-01-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.2.1	0.9193	ALS	8.2.1

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	3.32	40	93.85	0.089			39928	37472	1	1	87.552

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	3.32	3.41	94.83

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	MOLECULAR REPLACEMENT	THROUGHOUT	3.32	40	39928	37472	2009	93.85	0.27153	0.27153	0.26965	0.30523	RANDOM	86.957

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]
-7.25		-2.88	7.58		-4.14

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.248
r_mcangle_it	24.548
r_dihedral_angle_3_deg	22.23
r_dihedral_angle_4_deg	19.65
r_mcbond_it	17.95
r_dihedral_angle_1_deg	6.021
r_scangle_it	3.377
r_scbond_it	2.561
r_angle_refined_deg	2
r_nbtor_refined	0.338

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.248
r_mcangle_it	24.548
r_dihedral_angle_3_deg	22.23
r_dihedral_angle_4_deg	19.65
r_mcbond_it	17.95
r_dihedral_angle_1_deg	6.021
r_scangle_it	3.377
r_scbond_it	2.561
r_angle_refined_deg	2
r_nbtor_refined	0.338
r_nbd_refined	0.283
r_symmetry_hbond_refined	0.204
r_symmetry_vdw_refined	0.186
r_xyhbond_nbd_refined	0.174
r_chiral_restr	0.113
r_bond_refined_d	0.021
r_gen_planes_refined	0.009

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	13219
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	2

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing

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.