2LB9

Refined solution structure of a cyanobacterial phytochrome gaf domain in the red light-absorbing ground state (corrected pyrrole ring planarity)

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D 1H-15N NOESY	1-2 mM [U-13C; U-15N] protein	93% H2O/7% D2O	10	8.5	ambient	298
2	3D 1H-13C NOESY	1-2 mM [U-13C; U-15N] protein	93% H2O/7% D2O	10	8.5	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	800

NMR Refinement
Method	Details	Software
molecular dynamics, torsion angle dynamics		X-PLOR NIH

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	geometry optimization	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
2	structure solution	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
3	refinement	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore

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 R01GM157729.