2NA0

NMR structure of Guanylyl Cyclase Activator Protein 1 (GCAP1) mutant V77E in a Ca2+-free/Mg2+-bound Activator State

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	5 mM [U-100% 2H] TRIS, 5 mM [U-100% 2H] DTT, 0.5 mM [U-100% 15N] GCAP1 (V77E) mutant, 5 mM MgCl2, 93 % H2O, 7 % [U-100% 2H] D2O	93% H2O/7% D2O	20	7.4	1 atm	320
2	3D HNCO	5 mM [U-100% 2H] TRIS, 5 mM [U-100% 2H] DTT, 0.5 mM [U-13C; U-15N; U-2H] GCAP1 (V77E) mutant, 5 mM MgCl2, 93 % H2O, 7 % [U-100% 2H] D2O	93% H2O/7% D2O	20	7.4	1 atm	320
3	3D HNCA	5 mM [U-100% 2H] TRIS, 5 mM [U-100% 2H] DTT, 0.5 mM [U-100% 13C; U-100% 15N] GCAP1 (V77E) mutant, 5 mM MgCl2, 93 % H2O, 7 % [U-100% 2H] D2O	93% H2O/7% D2O	20	7.4	1 atm	320
4	3D HNCACB	5 mM [U-100% 2H] TRIS, 5 mM [U-100% 2H] DTT, 0.5 mM [U-100% 13C; U-100% 15N] GCAP1 (V77E) mutant, 5 mM MgCl2, 93 % H2O, 7 % [U-100% 2H] D2O	93% H2O/7% D2O	20	7.4	1 atm	320
5	3D CBCA(CO)NH	5 mM [U-100% 2H] TRIS, 5 mM [U-100% 2H] DTT, 0.5 mM [U-100% 13C; U-100% 15N] GCAP1 (V77E) mutant, 5 mM MgCl2, 93 % H2O, 7 % [U-100% 2H] D2O	93% H2O/7% D2O	20	7.4	1 atm	320
6	3D HBHA(CO)NH	5 mM [U-100% 2H] TRIS, 5 mM [U-100% 2H] DTT, 0.5 mM [U-100% 13C; U-100% 15N] GCAP1 (V77E) mutant, 5 mM MgCl2, 93 % H2O, 7 % [U-100% 2H] D2O	93% H2O/7% D2O	20	7.4	1 atm	320
7	3D 1H-15N TOCSY	5 mM [U-100% 2H] TRIS, 5 mM [U-100% 2H] DTT, 0.5 mM [U-100% 15N] GCAP1 (V77E) mutant, 5 mM MgCl2, 93 % H2O, 7 % [U-100% 2H] D2O	93% H2O/7% D2O	20	7.4	1 atm	320
8	3D 1H-15N NOESY	5 mM [U-100% 2H] TRIS, 5 mM [U-100% 2H] DTT, 0.5 mM [U-100% 15N] GCAP1 (V77E) mutant, 5 mM MgCl2, 93 % H2O, 7 % [U-100% 2H] D2O	93% H2O/7% D2O	20	7.4	1 atm	320
9	3D HNCACB	5 mM [U-100% 2H] TRIS, 5 mM [U-100% 2H] DTT, 0.5 mM [U-13C; U-15N; U-2H] GCAP1 (V77E) mutant, 5 mM MgCl2, 93 % H2O, 7 % [U-100% 2H] D2O	93% H2O/7% D2O	20	7.4	1 atm	320

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	800

NMR Refinement
Method	Details	Software
simulated annealing	A template homology model structure was refined using a refinement protocol of XPLOR-NIH with restraints from experimental data and, primary and secondary sequential analysis.	NMRPipe

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	500
Conformers Submitted Total Number	15
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
2	chemical shift assignment	Sparky		Goddard
3	refinement	XPLOR-NIH

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.