2DYX

Structure of the complex of lactoferrin C-lobe with melibiose at 2.0 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	6.5	298	0.1M MES, 25% POLYETHYLENE GLYCOL MONOMETHYL ETHER 550, 0.01M ZINC SULPHATE , pH 6.5, VAPOR DIFFUSION, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.67	53.92

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 63.588	α = 90
b = 50.4	β = 107.86
c = 65.93	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	298	IMAGE PLATE	MARRESEARCH	Mirror	2006-09-08	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU300	1.5414

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	20	96.1	0.047	11.5		23518	23518			29.592

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	2.07	94		0.286	2

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	1NKX	2	20	23505	22744	760	96.21	0.17441	0.17342	0.17168	0.20138	RANDOM	34.836

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]
0.72		-0.96	-0.82		-0.49

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.818
r_dihedral_angle_4_deg	21.48
r_dihedral_angle_3_deg	16.407
r_scangle_it	6.665
r_dihedral_angle_1_deg	6.145
r_scbond_it	4.495
r_mcangle_it	3.099
r_mcbond_it	2.013
r_angle_refined_deg	1.489
r_nbtor_refined	0.322
r_symmetry_vdw_refined	0.312
r_nbd_refined	0.242
r_symmetry_hbond_refined	0.199
r_xyhbond_nbd_refined	0.188
r_chiral_restr	0.094
r_metal_ion_refined	0.091
r_bond_refined_d	0.012
r_gen_planes_refined	0.005
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
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	2605
Nucleic Acid Atoms
Solvent Atoms	293
Heterogen Atoms	196

Software

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