4NLI

Crystal structure of sheep beta-lactoglobulin (space group P3121)

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3BLG

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	293	2.2M ammonium sulphate, 0.05M Tris-HCl, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
5.14	76.07

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 97.44	α = 90
b = 97.44	β = 90
c = 68.24	γ = 120

Symmetry
Space Group	P 31 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	CCD	MARMOSAIC 225 mm CCD		2013-05-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MAX II BEAMLINE I911-3	1.00	MAX II	I911-3

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	1.9	35.89	100	0.08	22.2		29476	29826	2	2

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	1.9	2	100		0.272	9.8		28337

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 (All)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	3BLG	1.9	35.89	29597	28117	1480	99.32	0.19501	0.19444	0.20568	RANDOM	32.393

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]

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.83
r_dihedral_angle_3_deg	14.251
r_dihedral_angle_4_deg	7.968
r_long_range_B_refined	7.245
r_long_range_B_other	6.932
r_dihedral_angle_1_deg	5.916
r_scangle_other	4.705
r_mcangle_other	2.949
r_mcangle_it	2.946
r_scbond_it	2.889
r_scbond_other	2.844
r_mcbond_it	1.907
r_mcbond_other	1.902
r_angle_refined_deg	1.35
r_angle_other_deg	0.86
r_chiral_restr	0.086
r_bond_refined_d	0.01
r_gen_planes_refined	0.006
r_gen_planes_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1273
Nucleic Acid Atoms
Solvent Atoms	138
Heterogen Atoms	20

Software

Software
Software Name	Purpose
MAR345	data collection
PHASER	phasing
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling