3CFL

Crystal structure of the complex formed between C-lobe of bovine lactoferrin and 5-chloro-6'-methyl-3-[4-(methylsulfonyl)phenyl]-2,3'-bipyridine at 2.25 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	298	0.01M ZnSO4, 0.1M MES, 25% PEG, Monomethyl Ether 550, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.66	53.81

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 63.514	α = 90
b = 50.395	β = 107.97
c = 65.863	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	300	IMAGE PLATE	MARRESEARCH	MIRROR	2007-11-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU300	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.25	20	94.6	0.106	7.9		19072	17086			31.3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.25	2.29	91.9		0.328	1.8

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-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2DYX	2.25	20	19072	17086	929	94.69	0.1875	0.1854	0.18321	0.22458	RANDOM	31.338

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]
0.7		-0.89	-0.49		-0.75

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.027
r_dihedral_angle_4_deg	20.209
r_dihedral_angle_3_deg	17.481
r_dihedral_angle_1_deg	6.371
r_scangle_it	3.489
r_scbond_it	2.04
r_mcangle_it	1.468
r_angle_refined_deg	1.407
r_mcbond_it	0.82
r_angle_other_deg	0.366
r_symmetry_hbond_refined	0.323
r_symmetry_vdw_refined	0.303
r_nbtor_refined	0.302
r_nbd_refined	0.207
r_metal_ion_refined	0.189
r_xyhbond_nbd_refined	0.147
r_chiral_restr	0.09
r_nbd_other	0.087
r_bond_refined_d	0.011
r_gen_planes_refined	0.004
r_gen_planes_other	0.001
r_bond_other_d

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2604
Nucleic Acid Atoms
Solvent Atoms	190
Heterogen Atoms	120

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
AUTOMAR	data reduction
SCALEPACK	data scaling
MOLREP	phasing