3MAM

A molecular switch changes the low to the high affinity state in the substrate binding protein AfProX

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1SW5	PDB entry 1SW5

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	298	100 mM HEPES, 15-25% PEG6000, 15-25% PEG 8000, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.3	46.49

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 33.792	α = 96.07
b = 36.958	β = 99.57
c = 57.886	γ = 96.12

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	73					M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1		ESRF	ID23-1

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	1.8	20	95	0.039	27.9	4.2	25271	22833			24.6

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	1.8	2	95.1		0.114	12.08	4.3	6780

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 1SW5	1.8	19.99	21690	1142	100	0.20407	0.20176	0.2	0.24681	0.24	RANDOM	20.035

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]
0.32	1.01	0.43	0.37	0.42	-0.25

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.092
r_dihedral_angle_3_deg	14.261
r_dihedral_angle_4_deg	10.949
r_dihedral_angle_1_deg	5.244
r_scangle_it	2.549
r_scbond_it	1.472
r_angle_refined_deg	1.078
r_mcangle_it	0.986
r_mcbond_it	0.522
r_chiral_restr	0.071
r_bond_refined_d	0.009
r_gen_planes_refined	0.005
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
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	2150
Nucleic Acid Atoms
Solvent Atoms	250
Heterogen Atoms	51

Software

Software
Software Name	Purpose
DNA	data collection
PHASER	phasing
REFMAC	refinement
XDS	data reduction
XDS	data scaling