1NMR

Solution Structure of C-terminal Domain from Trypanosoma cruzi Poly(A)-Binding Protein

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	2mM TcPABC, unlabelled, 50mM phosphate buffer, 150mM NaCl, 1mM NaN3, pH 6.3, 90% H2O, 10% D2O	90% H2O/10% D2O	50mM Phosphate, 150mM NaCl	6.3	Ambient	303
2	3D_15N-separated_NOESY	2mM TcPABC U-15N, 50mM phosphate buffer, 150mM NaCl, 1mM NaN3, pH 6.3, 90% H2O, 10% D2O	90% H2O/10% D2O	50mM Phosphate, 150mM NaCl	6.3	Ambient	303
3	HNHA	2mM TcPABC U-15N, 50mM phosphate buffer, 150mM NaCl, 1mM NaN3, pH 6.3, 90% H2O, 10% D2O	90% H2O/10% D2O	50mM Phosphate, 150mM NaCl	6.3	Ambient	303
4	3D_13C-separated_NOESY	2mM TcPABC U-15N,13C, 50mM phosphate buffer, 150mM NaCl, 1mM NaN3, pH 6.3	100% D20	50mM Phosphate, 150mM NaCl	6.3	Ambient	303
5	IPAP-HSQC	2mM TcPABC U-15N, 50mM phosphate buffer, 150mM NaCl, 1mM NaN3, 18mg/ml Pf1 phage, pH 6.3, 90% H2O, 10% D2O	90% H2O/10% D2O	50mM Phosphate, 150mM NaCl	6.3	Ambient	303
6	2D NOESY	2mM TcPABC, unlabelled, 50mM phosphate buffer, 150mM NaCl, 1mM NaN3, pH 6.3	100% D20	50mM Phosphate, 150mM NaCl	6.3	Ambient	303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	500
2	Varian	UNITYPLUS	800
3	Bruker	AVANCE	600

NMR Refinement
Method	Details	Software
simulated annealing	The structures are based on a total of 1170 restraints: 974 are NOE-derived distance constraints, 78 dihedral angle restraints,49 distance restraints from hydrogen bonds and 69 15N-1H residual dipolar couplings	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	8 (lowest energy)

Additional NMR Experimental Information
Details	This structure was determined using standard 2D homonuclear and 3D heteronuclear techniques.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	2.1	Bruker BioSpin
2	processing	Gifa	4.31	Delsuc
3	data analysis	XEASY	1.3.13	Wuthrich
4	refinement	CNS	1.1	Brunger
5	structure solution	ARIA	1.1	Nilges

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.