Experiment: 2K0Y

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	1-2 mM [U-98% 13C; U-98% 15N] act ACP, 5% D2O, 95% H2O, 20 mM potassium phosphate, 1 mM sodium azide	95% H2O/5% D2O		5.5	ambient	298
2	3D CBCA(CO)NH	1-2 mM [U-98% 13C; U-98% 15N] act ACP, 5% D2O, 95% H2O, 20 mM potassium phosphate, 1 mM sodium azide	95% H2O/5% D2O		5.5	ambient	298
3	3D HNCO	1-2 mM [U-98% 13C; U-98% 15N] act ACP, 5% D2O, 95% H2O, 20 mM potassium phosphate, 1 mM sodium azide	95% H2O/5% D2O		5.5	ambient	298
4	3D HNCACB	1-2 mM [U-98% 13C; U-98% 15N] act ACP, 5% D2O, 95% H2O, 20 mM potassium phosphate, 1 mM sodium azide	95% H2O/5% D2O		5.5	ambient	298
5	3D HCCH-TOCSY	1-2 mM [U-98% 13C; U-98% 15N] act ACP, 5% D2O, 95% H2O, 20 mM potassium phosphate, 1 mM sodium azide	95% H2O/5% D2O		5.5	ambient	298
6	3D HNHA	1-2 mM [U-98% 13C; U-98% 15N] act ACP, 5% D2O, 95% H2O, 20 mM potassium phosphate, 1 mM sodium azide	95% H2O/5% D2O		5.5	ambient	298
7	3D 1H-15N NOESY	1-2 mM [U-98% 13C; U-98% 15N] act ACP, 5% D2O, 95% H2O, 20 mM potassium phosphate, 1 mM sodium azide	95% H2O/5% D2O		5.5	ambient	298
8	3D 1H-13C NOESY	1-2 mM [U-98% 13C; U-98% 15N] act ACP, 5% D2O, 95% H2O, 20 mM potassium phosphate, 1 mM sodium azide	95% H2O/5% D2O		5.5	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	600

NMR Refinement
Method	Details	Software
simulated annealing	All structure calculations were carried out using the Ambiguous Restraints for Iterative Assignment of NOEs (ARIA) protocol Version 1.2, which includes an algorithm that attempts to correct for the effects of spin diffusion, was use. Torsion Angle Likelihood Obtained from Shift and sequence similarity (TALOS) and was used to predict φ and ψ dihedral angle restraints. Initially, structure calculation runs contained 8 iterations of 20 structures each, with the best 7 structures in each iteration (sorted according to total energy) being used for analysis and assignment. The number of dynamics steps was increased over default values to 20000 and 16000 for the first and second cooling stages respectively. After each run, violated restraints were checked, and those arising from noise peaks or incorrect assignments were removed/reassigned. Final ensembles of 100 structures were calculated from calibrated restraint tables. The 20 best structures (sorted according to total energy) were selected for water refinement. Water refined structures were calculated using the slightly modified refinement script applied to the RECOORD database. PROCHECK and WHATCHECK and quality indicators were compared to the average values for the RECOORD database of protein NMR structures.	ARIA

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

Additional NMR Experimental Information
Details	The structure was determined using a combination of NOE data (ambiguous and unambiguous as determined by ARIA) combined with J-coupling and TALOS dihedral restraints

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	ARIA	1.2	Linge, O'Donoghue and Nilges
2	processing	ARIA	1.2	Linge, O'Donoghue and Nilges
3	refinement	ARIA	1.2	Linge, O'Donoghue and 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.