6GFS

Thermodynamic, Crystallographic and Computational Studies of Non Mammalian Fatty Acid Binding to Bovine b-Lactoglobulin

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	293.2	protein 20 mg/mL, ligand 10mM, 20mM Tris buffer, pH 8, which were mixed with 4 microliter of well solution. Drops were equilibrated against 1 mL of well solution containing 1.43 M sodium citrate and 0.1M Hepes, pH 7.5

Crystal Properties
Matthews coefficient	Solvent content
2.495	50.83

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.277	α = 90
b = 53.277	β = 90
c = 111.091	γ = 120

Symmetry
Space Group	P 32 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
2	1	x-ray	100	CCD	ADSC QUANTUM 4		2000-07-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
2	SYNCHROTRON	SRS BEAMLINE PX14.2	0.932	SRS	PX14.2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	14.8	99.1	5	15.6		12951

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2	2.03

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2	14.8	12220	550	98.89	0.19504	0.1927	0.2482	RANDOM	44.559

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]
0.06	0.03		0.06		-0.19

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.037
r_dihedral_angle_3_deg	18.228
r_dihedral_angle_4_deg	13.841
r_long_range_B_refined	7.628
r_long_range_B_other	7.539
r_dihedral_angle_1_deg	7.092
r_scangle_other	4.05
r_mcangle_it	3.98
r_mcangle_other	3.98
r_scbond_it	2.586
r_scbond_other	2.584
r_mcbond_it	2.375
r_mcbond_other	2.372
r_angle_refined_deg	1.763
r_angle_other_deg	0.951
r_chiral_restr	0.068
r_gen_planes_refined	0.011
r_bond_refined_d	0.01
r_bond_other_d	0.002
r_gen_planes_other	0.002
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_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1280
Nucleic Acid Atoms
Solvent Atoms	83
Heterogen Atoms	18

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALA	data scaling
MOLREP	phasing