2LFH

Solution NMR Structure of the Helix-loop-Helix Domain of Human ID3 Protein, Northeast Structural Genomics Consortium Target HR3111A

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	0.9 mM [U-100% 13C; U-100% 15N] HR3111A, 100 mM sodium chloride, 10 mM DTT, 10 mM TRIS, 0.02 % sodium azide	90% H2O/10% D2O		7.5	ambient	298
2	2D 1H-13C CT-HSQC aliphatic	0.9 mM [U-100% 13C; U-100% 15N] HR3111A, 100 mM sodium chloride, 10 mM DTT, 10 mM TRIS, 0.02 % sodium azide	90% H2O/10% D2O		7.5	ambient	298
3	3D HNCO	0.9 mM [U-100% 13C; U-100% 15N] HR3111A, 100 mM sodium chloride, 10 mM DTT, 10 mM TRIS, 0.02 % sodium azide	90% H2O/10% D2O		7.5	ambient	298
4	(4,3)D GFT CABCA(CO)NHN	0.9 mM [U-100% 13C; U-100% 15N] HR3111A, 100 mM sodium chloride, 10 mM DTT, 10 mM TRIS, 0.02 % sodium azide	90% H2O/10% D2O		7.5	ambient	298
5	(4,3)D GFT HNNCABCA	0.9 mM [U-100% 13C; U-100% 15N] HR3111A, 100 mM sodium chloride, 10 mM DTT, 10 mM TRIS, 0.02 % sodium azide	90% H2O/10% D2O		7.5	ambient	298
6	2D 1H-13C HSQC aromatic	0.9 mM [U-100% 13C; U-100% 15N] HR3111A, 100 mM sodium chloride, 10 mM DTT, 10 mM TRIS, 0.02 % sodium azide	90% H2O/10% D2O		7.5	ambient	298
7	3D simutaneous 13C-aromatic,13C-aliphatic,15N edited 1H-1H NOESY	0.9 mM [U-100% 13C; U-100% 15N] HR3111A, 100 mM sodium chloride, 10 mM DTT, 10 mM TRIS, 0.02 % sodium azide	90% H2O/10% D2O		7.5	ambient	298
8	3D HN(CA)CO	0.9 mM [U-100% 13C; U-100% 15N] HR3111A, 100 mM sodium chloride, 10 mM DTT, 10 mM TRIS, 0.02 % sodium azide	90% H2O/10% D2O		7.5	ambient	298
9	3D (H)CCH-COSY aliphatic	0.9 mM [U-100% 13C; U-100% 15N] HR3111A, 100 mM sodium chloride, 10 mM DTT, 10 mM TRIS, 0.02 % sodium azide	90% H2O/10% D2O		7.5	ambient	298
10	3D (H)CCH-TOCSY aliphatic	0.9 mM [U-100% 13C; U-100% 15N] HR3111A, 100 mM sodium chloride, 10 mM DTT, 10 mM TRIS, 0.02 % sodium azide	90% H2O/10% D2O		7.5	ambient	298
11	3D HBHA(CO)NH	0.9 mM [U-100% 13C; U-100% 15N] HR3111A, 100 mM sodium chloride, 10 mM DTT, 10 mM TRIS, 0.02 % sodium azide	90% H2O/10% D2O		7.5	ambient	298
12	2D 1H-15N LR-HSQC for histidines	0.9 mM [U-100% 13C; U-100% 15N] HR3111A, 100 mM sodium chloride, 10 mM DTT, 10 mM TRIS, 0.02 % sodium azide	90% H2O/10% D2O		7.5	ambient	298
13	1D 15N T1	0.9 mM [U-100% 13C; U-100% 15N] HR3111A, 100 mM sodium chloride, 10 mM DTT, 10 mM TRIS, 0.02 % sodium azide	90% H2O/10% D2O		7.5	ambient	298
14	1D 15N T2	0.9 mM [U-100% 13C; U-100% 15N] HR3111A, 100 mM sodium chloride, 10 mM DTT, 10 mM TRIS, 0.02 % sodium azide	90% H2O/10% D2O		7.5	ambient	298
15	2D 1H-13C CT-HSQC methyl	0.5 mM [5% 13C; U-100% 15N] HR3111A, 100 mM sodium chloride, 10 mM DTT, 10 mM TRIS, 0.02 % sodium azide	90% H2O/10% D2O		7.5	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	750
2	Varian	INOVA	500

NMR Refinement
Method	Details	Software
simulated annealing	Structure determination was performed using CYANA with NOE-based constraints and PHI and PSI dihedral angle constraints from TALOS+. The 20 conformers out of 100 with the lowest target function were further refined by simulated annealing in explicit water bath using the program CNS with PARAM19 force field	CNS

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement,structure solution,geometry optimization	CNS	1.2	Brunger, Adams, Clore, Gros, Nilges and Read
2	refinement,geometry optimization,structure solution	CYANA	3.0	Guntert, Mumenthaler and Wuthrich
3	data analysis	AutoStructure	2.2.1	Huang, Tejero, Powers and Montelione
4	data analysis,chemical shift assignment	AutoAssign	2.3.0	Zimmerman, Moseley, Kulikowski and Montelione
5	data analysis	CARA	1.8.4	Keller and Wuthrich
6	chemical shift assignment	CARA	1.8.4	Keller and Wuthrich
7	peak picking	CARA	1.8.4	Keller and Wuthrich
8	data analysis	XEASY	1.3.13	Bartels et al.
9	processing	PROSA	6.4	Guntert
10	collection	VnmrJ	2.2D	Varian
11	geometry optimization	TALOS+	1.2009.0721.18	Shen, Cornilescu, Delaglio and Bax
12	refinement	CNS		Brunger, Adams, Clore, Gros, Nilges and Read

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 R01GM133198.