1W81

Crystal structure of apical membrane antigen 1 from Plasmodium vivax

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.5		THE CRYSTALLISATION MIXTURE CONSISTED OF 10-12% (W/V) PEG3350, 100-200MM IMIDAZOLE, PH 7.0, 5-10% (V/V) ISOPROPANOL, AND 1% (V/V) DMF OR 3% (V/V) T-BUTANOL. THE PROTEIN SOLUTION WAS DILUTED BY 40 - 60% WITH THE CRYSTALLISATION BUFFER, GIVING A FINAL CONCENTRATION OF 4-6 MG. ML-1 IN SUSPENDED DROPS OF VOLUME 2 - 3 PERCENT.

Crystal Properties
Matthews coefficient	Solvent content
2	38

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 54.097	α = 90
b = 76.096	β = 90
c = 103.925	γ = 90

Symmetry
Space Group	P 21 21 21

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	ADSC CCD		2003-07-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4		ESRF	ID14-4

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	2	20	88.7	0.06	23.1	5.6		147056

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	2	2.07	53.4		0.32	2.8

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	MAD	THROUGHOUT	2.01	20	24739	1347	88.7	0.198	0.194	0.259	RANDOM	39.02

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]
-1.09			0.21		0.88

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.368
r_dihedral_angle_4_deg	19.701
r_dihedral_angle_3_deg	16.63
r_dihedral_angle_1_deg	7.332
r_scangle_it	5.642
r_scbond_it	3.987
r_mcangle_it	3.468
r_mcbond_it	2.142
r_angle_refined_deg	1.66
r_nbtor_refined	0.311
r_xyhbond_nbd_refined	0.242
r_symmetry_vdw_refined	0.234
r_nbd_refined	0.227
r_chiral_restr	0.127
r_symmetry_hbond_refined	0.119
r_bond_refined_d	0.018
r_gen_planes_refined	0.007
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_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2935
Nucleic Acid Atoms
Solvent Atoms	288
Heterogen Atoms	5

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
SHARP	phasing