1U53

Novel X-Ray Structure of Na-ASP-2, a PR-1 protein from the nematode parasite Necator americanus and a vaccine antigen for human hookworm infection

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	298	100mM Imidazole, 40% PEG 400, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
1.92	35.49

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 37.89	α = 90
b = 51.54	β = 114.06
c = 43.63	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		IMAGE PLATE	RIGAKU RAXIS IV	mirrors	2003-12-16	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU FR-E SUPERBRIGHT

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	1.56	40	80.9	27.6			17644	3	3

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)
	1.56	1.62	10.7		0.154	3.5	1.74

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	1.56	25	17643	16702	938	80.99	0.17777	0.17511	0.22355	RANDOM	18.57

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]
0.5		-0.32	-0.36		-0.39

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.664
r_dihedral_angle_4_deg	23.884
r_dihedral_angle_3_deg	12.973
r_dihedral_angle_1_deg	11.196
r_scangle_it	3.225
r_mcangle_it	2.332
r_scbond_it	2.216
r_mcbond_it	1.721
r_angle_refined_deg	1.678
r_nbtor_refined	0.311
r_symmetry_vdw_refined	0.309
r_nbd_refined	0.261
r_xyhbond_nbd_refined	0.231
r_symmetry_hbond_refined	0.228
r_chiral_restr	0.12
r_bond_refined_d	0.016
r_gen_planes_refined	0.009
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_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_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	1446
Nucleic Acid Atoms
Solvent Atoms	201
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
AMoRE	phasing