1NQE

OUTER MEMBRANE COBALAMIN TRANSPORTER (BTUB) FROM E. COLI

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.6	293	PEG 3350, magnesium acetate, bis-tris, n-octyl tetraoxyethylene , pH 6.6, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.04	59.54

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 81.59	α = 90
b = 81.59	β = 90
c = 210.078	γ = 120

Symmetry
Space Group	P 31 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	ADSC QUANTUM 4	Rh-coated Si mirror	2000-08-26	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE F1	0.900	CHESS	F1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2	25	99.3	0.065	31.5	8.4	56085	55698		-3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2	2.07	97.8		0.412	1.69	5.9	5362

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1NQF	2	24.92	56085	52523	2793	99.32	0.19618	0.19618	0.1943	0.23154	RANDOM	41.151

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]
1.51	0.76		1.51		-2.27

RMS Deviations
Key	Refinement Restraint Deviation
r_scangle_it	16.629
r_scbond_it	14.006
r_mcangle_it	8.675
r_mcbond_it	6.434
r_dihedral_angle_1_deg	6.206
r_angle_refined_deg	1.626
r_angle_other_deg	1.211
r_symmetry_vdw_refined	0.506
r_symmetry_vdw_other	0.398
r_nbd_other	0.328
r_nbd_refined	0.246
r_xyhbond_nbd_refined	0.166
r_symmetry_hbond_refined	0.146
r_chiral_restr	0.113
r_nbtor_other	0.099
r_bond_other_d	0.084
r_gen_planes_other	0.031
r_bond_refined_d	0.018
r_gen_planes_refined	0.014

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4350
Nucleic Acid Atoms
Solvent Atoms	235
Heterogen Atoms	148

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing