1WQB

Three-dimensional Solution Strucutre of Aptotoxin VII, from the venom of a Trap-door Spider

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	10mM Aptotoxin; 90% H2O, 10% D2O	90% H2O/10% D2O	0	3.5	ambient	288
2	DQF-COSY	10mM Aptotoxin; 90% H2O, 10% D2O	90% H2O/10% D2O	0	3.5	ambient	288
3	2D TOCSY	10mM Aptotoxin; 90% H2O, 10% D2O	90% H2O/10% D2O	0	3.5	ambient	288
4	2D NOESY	10mM Aptotoxin; D2O	D2O	0	3.5	ambient	288
5	2D TOCSY	10mM Aptotoxin; D2O	D2O	0	3.5	ambient	288
6	PE-COSY	10mM Aptotoxin; D2O	D2O	0	3.5	ambient	288

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AMX	500

NMR Refinement
Method	Details	Software
distance geometry simulated annealing molecular dynamics	The structures are based on a total of 392 restraints, 358 are NOE-derived distance constraints, 19 dihedral angle restraints, 15 distance restraints from hydrogen bonds and disulfide bonds.	UXNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	18
Representative Model	1 (lowest energy)

Additional NMR Experimental Information
Details	This structure was determined using standard 2D homonuclear techniques.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	UXNMR	96	Bruker
2	processing	UXNMR	96	Bruker
3	refinement	X-PLOR	3.1
4	structure solution	X-PLOR	3.1	Brunger

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.