1USG

L-leucine-binding protein, apo form

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2LBP	PDB ENTRY 2LBP

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8		PEG 5000, SODIUM ACETATE PH 4.6, AMMONIUM SULPHATE, COCL2.

Crystal Properties
Matthews coefficient	Solvent content
2.3	52.2

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 91.41	α = 90
b = 79.2	β = 133.6
c = 65.18	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				2003-03-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MAX II BEAMLINE I711		MAX II	I711

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	1.53	32.6	95.7	0.046	25.4	3.2		48509

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	1.53	1.56	93.3		0.177	4.9	2.6

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 2LBP	1.53	32.62	46029	2480	100	0.191	0.189	0.2	0.216	0.23	RANDOM	18.21

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]
-0.86		-0.63	0.8		-0.81

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.507
r_scangle_it	3.266
r_mcangle_it	2.175
r_scbond_it	1.974
r_angle_refined_deg	1.56
r_mcbond_it	1.35
r_angle_other_deg	0.762
r_symmetry_vdw_refined	0.522
r_nbd_other	0.257
r_nbd_refined	0.227
r_symmetry_vdw_other	0.22
r_xyhbond_nbd_refined	0.16
r_symmetry_hbond_refined	0.14
r_chiral_restr	0.094
r_nbtor_other	0.089
r_bond_refined_d	0.015
r_gen_planes_refined	0.008
r_gen_planes_other	0.005
r_bond_other_d	0.001
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_deg
r_nbtor_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2596
Nucleic Acid Atoms
Solvent Atoms	179
Heterogen Atoms

Software

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