2GIF

Asymmetric structure of trimeric AcrB from Escherichia coli

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1IWG	PDB ENTRY 1IWG

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	4.6	290	5% PEG 400, 16-22% PEG 300, 8-11% glycerol, 70mM sodium citrate, pH 4.6, VAPOR DIFFUSION, temperature 290K

Crystal Properties
Matthews coefficient	Solvent content
3.46	64.42

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 222.8	α = 90
b = 134.1	β = 98.21
c = 161.01	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	MARRESEARCH		2005-01-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06SA	1.0	SLS	X06SA

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	2.9	30	99.3	0.073	13.4	4.2	103912	103134	1	1

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	2.9	3.08	97		0.956	1.6	4.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	PDB ENTRY 1IWG	2.9	29.51	98361	98361	5177	99.77	0.22761	0.22551	0.26677	RANDOM	73.945

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]
6.21		4.25	-3.26		-1.74

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.386
r_dihedral_angle_3_deg	18.854
r_dihedral_angle_4_deg	16.575
r_dihedral_angle_1_deg	5.148
r_angle_refined_deg	1.061
r_scangle_it	0.783
r_scbond_it	0.457
r_mcangle_it	0.35
r_nbtor_refined	0.301
r_nbd_refined	0.198
r_mcbond_it	0.194
r_symmetry_vdw_refined	0.137
r_xyhbond_nbd_refined	0.118
r_symmetry_hbond_refined	0.116
r_chiral_restr	0.069
r_bond_refined_d	0.007
r_gen_planes_refined	0.002
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	23624
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	26

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345	data collection
XDS	data scaling
MOLREP	phasing