2GUF

In meso crystal structure of the cobalamin transporter, BtuB

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.62	53.12

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 72.61	α = 90
b = 80.877	β = 90
c = 118.681	γ = 90

Symmetry
Space Group	P 21 21 21

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			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE F1	0.9124	CHESS	F1

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	1.95		98.7	0.079		5.4		51400

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	1.95	2.02	94.3		0.419	3.64	4.8

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.95	40.44	48447	2592	98.7	0.19055	0.19055	0.18871	0.22456	RANDOM	36.712

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]
4.69			-2.02		-2.67

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.737
r_dihedral_angle_4_deg	18.135
r_dihedral_angle_3_deg	17.17
r_dihedral_angle_1_deg	7.032
r_scangle_it	4.449
r_scbond_it	3.025
r_angle_refined_deg	2.012
r_mcangle_it	1.968
r_mcbond_it	1.221
r_nbtor_refined	0.323
r_symmetry_vdw_refined	0.246
r_nbd_refined	0.222
r_xyhbond_nbd_refined	0.175
r_symmetry_hbond_refined	0.152
r_chiral_restr	0.137
r_bond_refined_d	0.019
r_gen_planes_refined	0.009

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4385
Nucleic Acid Atoms
Solvent Atoms	297
Heterogen Atoms	299

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data scaling
MOLREP	phasing