4C82

IspF (Plasmodium falciparum) unliganded structure

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4C81	PDB ENTRY 4C81

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5	293	PROTEIN WAS CRYSTALLISED BY HANGING-DROP VAPOUR DIFFUSION. PFISPF SAMPLE IN 100 MM KCL, 100 MM L-ARGININE, 2 MM MGCL2, 50 MM CHES, PH 9.5; WAS CONCENTRATED TO 6 MG/ML, AND HAD FOSMIDOMYCIN ADDED (20 MM FINAL CONCENTRATION). CRYSTALS WERE OBTAINED BY MIXING 2 MICROLITES OF PROTEIN WITH 2 MICROLITRES OF RESERVOIR SOLUTION AT 20 DEGREES C. RESERVOIR SOLUTION: 1.8-2.5 M (NH4)2SO4, 5MM ZNCL2, 100 MM BIS-TRIS, PH 5.5. SATURATED SUCROSE WAS USED AS A CRYO-PROTECTANT DURING COLLECTION.

Crystal Properties
Matthews coefficient	Solvent content
3.4	64

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 84.223	α = 90
b = 84.223	β = 90
c = 102.451	γ = 120

Symmetry
Space Group	H 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	RIGAKU RAXIS IV PLUS PLUS		2010-10-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF

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	29.71	98.6	0.09	5.3	2.3		18068		2	32

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	2.11	97		0.48	2	2.2

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 4C81	2	29.72	17023	1044	98.58	0.19689	0.19441	0.19	0.22629	0.23	RANDOM	37.598

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]
-0.26	-0.13		-0.26		0.39

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	45.073
r_dihedral_angle_3_deg	19.187
r_dihedral_angle_4_deg	10.28
r_dihedral_angle_1_deg	6.662
r_angle_refined_deg	2.087
r_chiral_restr	0.152
r_bond_refined_d	0.019
r_gen_planes_refined	0.01
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_it
r_mcbond_other
r_mcangle_it
r_mcangle_other
r_scbond_it
r_scbond_other
r_scangle_it
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	1213
Nucleic Acid Atoms
Solvent Atoms	94
Heterogen Atoms	7

Software

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