2FSF | pdb_00002fsf

Escherichia coli SecA, the preprotein translocase dimeric ATPase

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.79	55.96

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 75.03	α = 90
b = 90.171	β = 100.48
c = 163.049	γ = 90

Symmetry
Space Group	P 1 21 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 4		2003-08-02	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	ADSC QUANTUM 4		2004-06-11	M	MAD
3	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4	0.9393	ESRF	ID14-4
2	SYNCHROTRON	ESRF BEAMLINE ID14-4	0.97955, 0.97939, 0.97550	ESRF	ID14-4

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
1,2	2	20	97.13	0.042	12.49	3.2	144187	140049			50.972

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)
	2	2.1	86.7		0.352	2.3	2.3

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-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	2	19.98	144187	140049	7010	97.13	0.215	0.213	0.2597	0.261	0.2973	RANDOM	46.246

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]
0.02			-0.02		0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.257
r_dihedral_angle_3_deg	19.515
r_dihedral_angle_4_deg	17.722
r_dihedral_angle_1_deg	8.287
r_scangle_it	5.085
r_scbond_it	3.626
r_angle_refined_deg	2.21
r_mcangle_it	2.207
r_mcbond_it	2.102
r_angle_other_deg	1.084
r_mcbond_other	0.377
r_symmetry_hbond_refined	0.343
r_symmetry_vdw_other	0.263
r_nbd_refined	0.241
r_symmetry_vdw_refined	0.232
r_nbd_other	0.217
r_xyhbond_nbd_refined	0.215
r_nbtor_refined	0.186
r_chiral_restr	0.146
r_xyhbond_nbd_other	0.11
r_nbtor_other	0.096
r_bond_refined_d	0.029
r_gen_planes_refined	0.01
r_bond_other_d	0.005
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	11203
Nucleic Acid Atoms
Solvent Atoms	434
Heterogen Atoms

Software

Software
Software Name	Purpose
XSCALE	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
MOSFLM	data reduction
CCP4	data scaling
SHELXD	phasing
SHARP	phasing