2R9H

Crystal Structure of Q207C Mutant of CLC-ec1 in complex with Fab

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	sitting drop	9.5	295	Vapor diffusion: 3 uL of protein complex, 7 mg/ml, in 50 mM NaKTartrate, 5 mM Tris, 12.5 mM NaCl, 18.5% w/v PEG300, 25 mM glycine against 300 uL of 25 mM NaCl, 37% w/v PEG300, 50 mM glycine, pH 9.5, sitting drop, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
3.9	68.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 233.099	α = 90
b = 98.358	β = 131.77
c = 171.922	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		CCD	ADSC QUANTUM 315			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	0.9204	NSLS	X29A

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	3.1	50	99.2	0.08	14.4	6.7		52974

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	3.1	3.21	96.7		0.48		4.8	5084

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	3.1	50	52493	2638	99.27	0.262	0.261	0.28	RANDOM	105.226

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]
-3.29		-0.8	3.2		-0.98

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.177
r_dihedral_angle_3_deg	15.824
r_dihedral_angle_4_deg	14.403
r_dihedral_angle_1_deg	4.658
r_angle_refined_deg	0.987
r_nbtor_refined	0.301
r_nbd_refined	0.192
r_xyhbond_nbd_refined	0.118
r_symmetry_vdw_refined	0.112
r_chiral_restr	0.063
r_symmetry_hbond_refined	0.034
r_bond_refined_d	0.007
r_gen_planes_refined	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	13217
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	4

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction