ISDA: 1Z1Z

SOLUTION NMR

NMR Experiment

Experiment	Type	Sample Contents	Ionic Strength	Solvent	pH	Pressure	Temprature (K)
1	3D_13C-separated_NOESY	0.9 mM gpU, U-15N,13C, 10 mM Tris-d11, pH 7.8, 50 mM potassium chloride, 0.02% sodium azide, 10% D2O, 90% H2O	50 mM KCl	10% D2O, 90% H2O	7.8	1	293
2	3D_15N-separated_NOESY	0.9 mM gpU, U-15N,13C, 10 mM Tris-d11, pH 7.8, 50 mM potassium chloride, 0.02% sodium azide, 10% D2O, 90% H2O	50 mM KCl	10% D2O, 90% H2O	7.8	1	293
3	3D_13C-separated-aromatic_NOESY	0.9 mM gpU, U-15N,13C, 10 mM Tris-d11, pH 7.8, 50 mM potassium chloride, 0.02% sodium azide, 10% D2O, 90% H2O	50 mM KCl	10% D2O, 90% H2O	7.8	1	293
4	2D-IPAP-15N_HSQC	0.9 mM gpU, U-15N,13C, 10 mM Tris-d11, pH 7.8, 50 mM potassium chloride, 0.02% sodium azide, 10% D2O, 90% H2O	50 mM KCl	10% D2O, 90% H2O	7.8	1	293

NMR Spectrometer Information

Spectrometer	Manufacturer	Model	Field Strength

NMR Refinement

Method	Details	Software
simulated annealing	1180 NOE distance restraints (876 intramolecular, 505 short-range, 128 medium range, 371 long-range), 42 pairs of hydrogen bond distance restraints, 106 pairs of phi/psi dihedral angle restraints and 41 amide residual dipolar coupling restraints were incorporated into the structure calculation. NOE calibration was performed with CANDID module of CYANA. Initially, 200 structures were calcuated with XPLOR-NIH. From this ensemble, 50 low-energy structure were refined in water using the XPLOR-NIH protocol by C. Spronk. The top 20 structures by energy had a backbone RMSD of 0.96 +/- 0.16 A on the secondary structure elements. In addition to residues 1-3 and 128-131 at the termini, a large loop spanning residues 45-60 is disordered.	1

NMR Ensemble Information

Conformer Selection Criteria	?
Conformers Calculated Total Number	?
Conformers Submitted Total Number	1
Representative Model	1 (lowest energy)

Computation: NMR Software

#	Classification	Version	Software Name	Author
1	processing	.	NMRPipe	Delaglio
2	data analysis	5.2	NMRView	Johnson
3	structure solution	2.1.3	CYANA	Guntert
4	refinement	2.9.9	XPLOR-NIH	?