2QAF | pdb_00002qaf

Crystal structure of Plasmodium falciparum orotidine 5'-phosphate decarboxylase covalently modified by 6-iodo-UMP

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2Q8L	PDB entry 2Q8L

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.4	293	30% PEG 1000, 100mM Ammonium phosphate, pH 7.4, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.91	35.6

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 80.92	α = 90
b = 83.849	β = 90
c = 89.869	γ = 90

Symmetry
Space Group	P 21 21 2

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 QUANTUM 315		2007-02-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 14-BM-C	0.90020	APS	14-BM-C

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.95	50	95.43	0.102	0.102	9.1	4.7	43303	41322

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.95	1.98	98		0.492	0.492	2.3	4.3	2199

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 (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 2Q8L	1.95	28.3	43027	41065	2191	95.44	0.17453	0.17183	0.1729	0.2258	0.2273	RANDOM	19.806

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]
0.55			0.28		-0.83

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.403
r_dihedral_angle_4_deg	24.152
r_dihedral_angle_3_deg	14.8
r_dihedral_angle_1_deg	6.198
r_scangle_it	4.188
r_scbond_it	2.885
r_mcangle_it	1.73
r_angle_refined_deg	1.633
r_mcbond_it	1.152
r_nbtor_refined	0.315
r_nbd_refined	0.232
r_symmetry_hbond_refined	0.213
r_symmetry_vdw_refined	0.188
r_xyhbond_nbd_refined	0.158
r_chiral_restr	0.12
r_bond_refined_d	0.01
r_gen_planes_refined	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5354
Nucleic Acid Atoms
Solvent Atoms	250
Heterogen Atoms	47

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling
MOLREP	phasing