2VFA

Crystal structure of a chimera of Plasmodium falciparum and human hypoxanthine-guanine phosphoribosyl transferases

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1HMP	PDB ENTRY 1HMP

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8		0.1M TRIS PH 8.0, 2.0M AMMONIUM SULPHATE

Crystal Properties
Matthews coefficient	Solvent content
3.47	64.6

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 161.811	α = 90
b = 161.811	β = 90
c = 161.811	γ = 90

Symmetry
Space Group	I 2 3

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MARRESEARCH	OSMIC MIRROR	2003-09-17	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	ENRAF-NONIUS FR591

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	2.8	30	100	0.11	28.5	13.8		17496

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	2.8	2.95	100		0.89	2.7	13

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1HMP	2.8	50	16493	918	99.8	0.233	0.23	0.278	RANDOM	54.96

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	35.01
r_dihedral_angle_3_deg	18.644
r_dihedral_angle_4_deg	12.204
r_dihedral_angle_1_deg	4.759
r_angle_refined_deg	0.937
r_scangle_it	0.637
r_mcangle_it	0.425
r_scbond_it	0.388
r_nbtor_refined	0.306
r_mcbond_it	0.236
r_symmetry_hbond_refined	0.223
r_nbd_refined	0.182
r_symmetry_vdw_refined	0.182
r_xyhbond_nbd_refined	0.128
r_chiral_restr	0.059
r_bond_refined_d	0.006
r_gen_planes_refined	0.002
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	3112
Nucleic Acid Atoms
Solvent Atoms	82
Heterogen Atoms	48

Software

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