2GPC

The crystal structure of the enzyme Fe-superoxide dismutase from Trypanosoma cruzi

X-RAY DIFFRACTION

---

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	291	24% PEG4000, 0.2 M MgCl2, 0.1 M TRIS-HCl, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.14	42.48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 109.626	α = 90
b = 38.985	β = 105.85
c = 91.073	γ = 90

Symmetry
Space Group	C 1 2 1

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	MAR scanner 345 mm plate		2002-02-25	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.9	29.5	94.6	0.063	10.6	4.4		27127	2	2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.9	1.99	69.9		0.276	2.7	2.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	1ISA	1.9	29.49	2	28012	26598	1414	94.56	0.15666	0.15449	0.1981	RANDOM	14.471

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]
		0.01			0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.694
r_scangle_it	2.23
r_scbond_it	1.366
r_angle_refined_deg	1.118
r_mcangle_it	0.877
r_angle_other_deg	0.779
r_mcbond_it	0.46
r_nbd_other	0.228
r_symmetry_vdw_other	0.201
r_nbd_refined	0.199
r_symmetry_hbond_refined	0.154
r_xyhbond_nbd_refined	0.136
r_symmetry_vdw_refined	0.102
r_nbtor_other	0.081
r_chiral_restr	0.069
r_bond_refined_d	0.008
r_gen_planes_refined	0.004
r_gen_planes_other	0.003
r_bond_other_d	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3107
Nucleic Acid Atoms
Solvent Atoms	458
Heterogen Atoms	3

Software

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