2K2N

Solution structure of a cyanobacterial phytochrome GAF domain in the red light-absorbing ground state

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	1.7 mM [U-13C; U-15N] SyB-Cph1(GAF), 1.7 mM PHYCOCYANOBILIN, 10 mM [U-2H] Tris-DCl, 0.03 % NaN3	93% H2O/7% D2O	0.01	8.5	ambient	298
2	3D HNCO	1.7 mM [U-13C; U-15N] SyB-Cph1(GAF), 1.7 mM PHYCOCYANOBILIN, 10 mM [U-2H] Tris-DCl, 0.03 % NaN3	93% H2O/7% D2O	0.01	8.5	ambient	298
3	3D CBCA(CO)NH	1.7 mM [U-13C; U-15N] SyB-Cph1(GAF), 1.7 mM PHYCOCYANOBILIN, 10 mM [U-2H] Tris-DCl, 0.03 % NaN3	93% H2O/7% D2O	0.01	8.5	ambient	298
4	3D HNCACB	1.7 mM [U-13C; U-15N] SyB-Cph1(GAF), 1.7 mM PHYCOCYANOBILIN, 10 mM [U-2H] Tris-DCl, 0.03 % NaN3	93% H2O/7% D2O	0.01	8.5	ambient	298
5	3D HBHA(CO)NH	1.7 mM [U-13C; U-15N] SyB-Cph1(GAF), 1.7 mM PHYCOCYANOBILIN, 10 mM [U-2H] Tris-DCl, 0.03 % NaN3	93% H2O/7% D2O	0.01	8.5	ambient	298
6	3D H(CCO)NH	1.7 mM [U-13C; U-15N] SyB-Cph1(GAF), 1.7 mM PHYCOCYANOBILIN, 10 mM [U-2H] Tris-DCl, 0.03 % NaN3	93% H2O/7% D2O	0.01	8.5	ambient	298
7	3D C(CO)NH	1.7 mM [U-13C; U-15N] SyB-Cph1(GAF), 1.7 mM PHYCOCYANOBILIN, 10 mM [U-2H] Tris-DCl, 0.03 % NaN3	93% H2O/7% D2O	0.01	8.5	ambient	298
8	3D HCCH-TOCSY	1.7 mM [U-13C; U-15N] SyB-Cph1(GAF), 1.7 mM PHYCOCYANOBILIN, 10 mM [U-2H] Tris-DCl, 0.03 % NaN3	93% H2O/7% D2O	0.01	8.5	ambient	298
9	3D 1H-15N NOESY	1.7 mM [U-13C; U-15N] SyB-Cph1(GAF), 1.7 mM PHYCOCYANOBILIN, 10 mM [U-2H] Tris-DCl, 0.03 % NaN3	93% H2O/7% D2O	0.01	8.5	ambient	298
10	3D 1H-13C NOESY	1.7 mM [U-13C; U-15N] SyB-Cph1(GAF), 1.7 mM PHYCOCYANOBILIN, 10 mM [U-2H] Tris-DCl, 0.03 % NaN3	93% H2O/7% D2O	0.01	8.5	ambient	298
11	3D HNCO antiphase	1 mM [U-13C; U-15N] SyB-Cph1(GAF), 1 mM PHYCOCYANOBILIN, 10 mM [U-2H] Tris-DCl, 0.03 % NaN3	93% H2O/7% D2O	0.01	8.5	ambient	306
12	3D HCA(CO)N antiphase	1 mM [U-13C; U-15N] SyB-Cph1(GAF), 1 mM PHYCOCYANOBILIN, 10 mM [U-2H] Tris-DCl, 0.03 % NaN3	93% H2O/7% D2O	0.01	8.5	ambient	306
13	J modulated 2D 1H-13C HSQC	0.5 mM SyB-Cph1(GAF), 0.5 mM [U-13C] PHYCOCYANOBILIN, 10 mM [U-2H] Tris-DCl, 0.03 % NaN3	93% H2O/7% D2O	0.01	8.5	ambient	298
14	3D 1H-15N NOESY	2 mM SyB-Cph1(GAF), 2 mM [U-15N] PHYCOCYANOBILIN, 10 mM [U-2H] Tris-DCl, 0.03 % NaN3	93% H2O/7% D2O	0.01	8.5	ambient	298
15	3D 1H-13C NOESY	1 mM SyB-Cph1(GAF), 1 mM [U-13C] PHYCOCYANOBILIN, 10 mM [U-2H] Tris-DCl, 0.03 % NaN3	100% D2O	0.01	8.5	ambient	298

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

NMR Refinement
Method	Details	Software
torsion angle molecular dynamics, internal variable dynamics		XwinNMR

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

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR		Bruker Biospin
2	collection	VnmrJ		Varian
3	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
4	data analysis	NMRDraw		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
5	peak picking	NMRDraw		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
6	chemical shift assignment	NMRDraw		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
7	peak picking	PIPP		Garrett
8	chemical shift assignment	PIPP		Garrett
9	data analysis	TALOS		Cornilescu, Delaglio and Bax
10	structure solution	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
11	geometry optimization	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
12	refinement	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
13	data analysis	MOLMOL		Koradi, Billeter and Wuthrich
14	data analysis	ProcheckNMR		Laskowski and MacArthur

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.