2ARG

FORMATION OF AN AMINO ACID BINDING POCKET THROUGH ADAPTIVE ZIPPERING-UP OF A LARGE DNA HAIRPIN LOOP, NMR, 9 STRUCTURES

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	NOESY	100% D2O		100 mM	6.35	1 atm	277
2	TOCSY	100% D2O		100 mM	6.35	1 atm	277
3	ROESY	100% D2O		100 mM	6.35	1 atm	277
4	1H-15N HMQC	100% D2O		100 mM	6.35	1 atm	277

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	VARIAN UNITY-PLUS	600

NMR Refinement
Method	Details	Software
DISTANCE GEOMETRY, MOLECULAR DYNAMIC	TWENTY STARTING STRUCTURES WERE GENERATED BY METRICMATRIX DISTANCE GEOMETRY (FROM X-PLOR) AND WERE SUBSEQUENTLY REFINED BY DISTANCE-RESTRAINED MOLECULAR DYNAMICS USING A SET OF INTER-PROTON DISTANCE RESTRAINTS DERIVED FROM THE 2-D NMR DATA SETS. NINE FIN AL NMR-DISTANCE REFINED STRUCTURES WERE SELECTED BASED ON THE CRITERION OF LOW TOTAL ENERGY AND LOW RESTRAINTS VIOLATIONS.	X-PLOR

NMR Ensemble Information
Conformer Selection Criteria	LEAST NOE, VDW, AND BOND ANGLE VIOLATION, LEAST TOTAL ENERGY
Conformers Calculated Total Number	20
Conformers Submitted Total Number	9

Additional NMR Experimental Information
Details	THE INTER-PROTON DISTANCE RESTRAINTS WERE DERIVED FROM 2-D NOE BUILD UP EXPERIMENTS RECORDED AT 50, 90, 150, AND 90 AND 135 MIXING TIME FOR EXCHANGEABLE PROTONS 200 MS MIXING TIME FOR NON-EXCHANGEABLE PROTONS AND AT 600 MHZ

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	X-PLOR	3.1	BRUNGER
2	structure solution	X-PLOR

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.