2H2S

Crystal Structure of E148A mutant of CLC-ec1 in SeCN-

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	7.5	295	100 mM KSeCN, 100 mM NaKTartrate, 38% PEG 300, 50 mM HEPES, 10 mM Tris.H2SO4, pH 7.5, VAPOR DIFFUSION, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
3.95	68.83

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 216.927	α = 90
b = 118.688	β = 127.44
c = 148.915	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		AREA DETECTOR				M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X25	0.98	NSLS	X25

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	1.034	169.031	99.4	0.068	0.068	7.1	3.2		54172

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)
	3.1	3.27	99.8		0.346	0.346	2.1	3.2	7887

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	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	3.1	50	54118	2714	99.3	0.2811	0.2811	0.281	0.282	RANDOM	77.99

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]
-2.41		-2.9	5.77		-6.89

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.762
r_dihedral_angle_4_deg	21.109
r_dihedral_angle_3_deg	16.518
r_angle_refined_deg	1.53
r_dihedral_angle_1_deg	1.498
r_symmetry_hbond_refined	0.364
r_nbtor_refined	0.345
r_nbd_refined	0.341
r_symmetry_vdw_refined	0.336
r_xyhbond_nbd_refined	0.222
r_chiral_restr	0.105
r_bond_refined_d	0.01
r_gen_planes_refined	0.009

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	13215
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	6

Software

Software
Software Name	Purpose
SCALA	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
CCP4	data scaling