2R6G

The Crystal Structure of the E. coli Maltose Transporter

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1Q12	PDB ENTRIES 1Q12 and 1OMP
experimental model	PDB	1OMP	PDB ENTRIES 1Q12 and 1OMP

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	293	27% PEG 400, 500mM NaCl, 100mM Sodium Hepes pH 7.5, 10mM betaine hydrochloride, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.46	64.46

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 73.26	α = 87.13
b = 95.86	β = 82.43
c = 109.99	γ = 75.75

Symmetry
Space Group	P 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	MARMOSAIC 300 mm CCD	Si(111) Double Crystal Monochromator. Adjustable focusing mirrors in K-B geometry	2007-03-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-D	1.0332	APS	23-ID-D

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	2.8	50	91.4	0.092	0.092	8.3	3.6	66520	66520

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	2.8	2.9	64.9		0.47	0.47	1.54	2.6

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 ENTRIES 1Q12 and 1OMP	2.8	47.4	59288	58103	1185	83.76	0.24223	0.24164	0.2714	RANDOM	83.877

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]
3.95	3.16	5.32	-2.54	-2.06	-4.16

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.758
r_dihedral_angle_3_deg	16.378
r_dihedral_angle_4_deg	14.172
r_dihedral_angle_1_deg	4.468
r_angle_refined_deg	0.974
r_scangle_it	0.386
r_nbtor_refined	0.296
r_mcangle_it	0.257
r_scbond_it	0.228
r_nbd_refined	0.176
r_symmetry_vdw_refined	0.167
r_mcbond_it	0.143
r_xyhbond_nbd_refined	0.107
r_symmetry_hbond_refined	0.075
r_chiral_restr	0.064
r_bond_refined_d	0.006
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	14628
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	85

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
DM	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
Blu-Ice	data collection
HKL-2000	data reduction
HKL-2000	data scaling