1MR5

Orthorhombic form of Trypanosoma cruzi trans-sialidase

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	291	PEG 4000, TrisHCl, isopropanol, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.4	48.79

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 87.029	α = 90
b = 88.021	β = 90
c = 89.564	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 4		2001-05-07	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1	0.934	ESRF	ID14-1

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	2.25	30	99.7	0.059			33232	33232

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)
	2.25	2.37	99.4		0.228

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	pdb id 1MZ5	2.25	27.84	31466	31466	1667	99.5	0.221	0.22104	0.21819	0.27368	RANDOM	20.543

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]
0.89			-0.16		-0.73

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	18.806
r_dihedral_angle_1_deg	5.242
r_scangle_it	4.131
r_scbond_it	2.631
r_angle_refined_deg	1.965
r_mcangle_it	1.684
r_mcbond_it	0.979
r_angle_other_deg	0.863
r_symmetry_vdw_refined	0.367
r_symmetry_hbond_refined	0.314
r_symmetry_vdw_other	0.24
r_nbd_refined	0.226
r_nbd_other	0.222
r_xyhbond_nbd_refined	0.146
r_chiral_restr	0.114
r_xyhbond_nbd_other	0.096
r_bond_refined_d	0.021
r_gen_planes_refined	0.008
r_gen_planes_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4842
Nucleic Acid Atoms
Solvent Atoms	132
Heterogen Atoms

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
AMoRE	phasing
REFMAC	refinement
CCP4	data scaling