1XPN

NMR structure of P. aeruginosa protein PA1324: Northeast Structural Genomics Consortium target PaP1

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_15N-separated_NOESY	1 mM U-13C,15N PA1324, 20 mM BisTrisPropane, 90% H2O, 10% D2O	90% H2O/10% D2O	300 mM NaCl	6.8	ambient	298
2	3D_13C-separated_NOESY	1 mM U-13C,15N PA1324, 20 mM BisTrisPropane, 90% H2O, 10% D2O	90% H2O/10% D2O	300 mM NaCl	6.8	ambient	298
3	4D-13C,13C-HMQC-NOESY-HMQC	1 mM U-13C,15N PA1324, 20 mM BisTrisPropane	100% D2O	300 mM NaCl	6.8	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	600
2	Varian	INOVA	750
3	Varian	INOVA	800

NMR Refinement
Method	Details	Software
Molecular Dynamics and Simulated Annealing	NOE distance restraints were determined automatically using AutoStructure (G.T. Montelione & Y.J. Huang) starting from peak-picked NOESY data and chemical shift assignments. Final refinement was conducted in explicit solvent with Leonard-Jones and electrostatic potentials. Residues 1-26 are unrestrained and constitute a flexible, n-terminal tail. The structure of residues 27-170 is restrained by 1861 noe distance restraints (541 intraresidue, 513 sequential, 190 medium range, and 617 long range (n>4)), 132 dihedral restraints (65 phi, 67 psi), and 70 h-bond restraints (for 35 h-bonds). Dihedral restraints were derived from Talos and HNHA. H-bond restraints were derived from analysis of amides that exchange slowly with D2O solvent together with initial structures derived from Noesy data.	NIH-Xplor

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy,structures with the fewest restraint violations
Conformers Calculated Total Number	20
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy, fewest violations, closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	NIH-Xplor	2.0.4	Brunger, Clore, Kuszewski, Schwieters, Tjandra
2	refinement	CNS	1.1	BRUNGER, ADAMS, CLORE, DELANO, GROS, GROSSE-KUNSTLEVE, JIANG, KUSZEWSKI, NILGES, PANNU, READ, RICE, SIMONSON, WARREN
3	data analysis	Sparky	3.106	T.D. Goddard, D.G. Kneller
4	structure solution	AutoStructure	2.1.0	G.T. Montelione, J.Y. Huang
5	data analysis	TALOS	2003	G. Cornilescu, F. Delaglio, A. Bax

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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 R01GM157729.