3IQY

Active site mutants of B. subtilis SecA

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	299	20 mM BES pH 7.0, 2.1 M Ammonium sulfate, 32 % Glycerol, VAPOR DIFFUSION, HANGING DROP, temperature 299K

Crystal Properties
Matthews coefficient	Solvent content
3.94	68.76

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 131.015	α = 90
b = 131.015	β = 90
c = 151.966	γ = 120

Symmetry
Space Group	P 31 1 2

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 4	mirrors	2006-04-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X12B	1.00000	NSLS	X12B

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	3.3	30	100	0.091	0.061	22.8	7.9	22533	22533			84

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	3.3	3.42	100		0.683	0.727	2.9	6.9	2216

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	PDB entry 1M6N	3.3	19.77	2	19062	19062	912	84.8	0.22	0.207	0.207	0.269	RANDOM	101.4

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]
-9.35			-9.35		18.69

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	21.5
c_angle_deg	1.3
c_improper_angle_d	0.81
c_bond_d	0.011
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot
c_mcbond_it
c_mcangle_it
c_scbond_it
c_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6399
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	20

Software

Software
Software Name	Purpose
ADSC	data collection
MOLREP	phasing
CNS	refinement
HKL-2000	data reduction
SCALEPACK	data scaling