2Y95

Solution structure of AUCG tetraloop hairpin found in human Xist RNA A-repeats essential for X-inactivation

SOLUTION NMR

---

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-1H NOESY WITH WATERGATE AND WATERFLIPBACK	90% H2O/10% D2O		100 mM	6.0	1.0 atm	278.0
2	2D 1H-13C HSQC	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0
3	2D 1H-1H NOESY	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0
4	2D 1H-13C HC-TROSY	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0
5	2D 1H-1H TOCSY	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0
6	2D 1H-15N HSQC	90% H2O/10% D2O		100 mM	6.0	1.0 atm	278.0
7	HNN-COSY	90% H2O/10% D2O		100 mM	6.0	1.0 atm	278.0
8	HNN-COSY	90% H2O/10% D2O		100 mM	6.0	1.0 atm	278.0
9	2D 1H-13C SELECTIVE HSQC	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0
10	3D HCCH-E.COSY	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0
11	3D HCCH-TOCSY	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0
12	3D HCN	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0
13	3D FORWARD DIRECTED HCCH-E.COSY	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0
14	HNN- COSY LONG-RANGE	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0
15	HNN-COSY WITH ADIABATIC REFOCUSING	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0
16	TROSY RELAYED HCCH-COSY	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0
17	2D 1H-13C HMQC	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0
18	3D 1H-13C NOESY-HMQC	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0
19	3D HCP	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0
20	3D HCP SPIN-ECHO-DIFF	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0
21	3D HCCH-COSY	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0
22	2D 1H-13C HC-TROSY	90% H2O/10% D2O		100 mM	6.0	1.0 atm	298.0

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	800
2	Bruker	DRX	900
3	Bruker	DRX	600
4	Bruker	DRX	600
5	Bruker	DRX	600
6	Bruker	DRX	600
7	Bruker	DRX	900
8	Bruker	DMX	800
9	Bruker	DRX	600

NMR Refinement
Method	Details	Software
ARIA	20 ARIA-CALCULATED STRUCTURES WERE CHOSEN BASED UPON LOW RESTRAINT VIOLATION AND LOW ENERGY FOR REFINEMENT WITH AMBER	Amber

NMR Ensemble Information
Conformer Selection Criteria	LEAST RESTRAINT VIOLATION, LOW ENERGY, AGREEMENT WITH CHEMICAL SHIFTS CALCULATED BY NUCHEMICS
Conformers Calculated Total Number	100
Conformers Submitted Total Number	10

Additional NMR Experimental Information
Details	100 INITIAL STRUCTURES WERE CALCULATED USING ARIA, 20 WERE SELECTED FOR REFINEMENT WITH AMBER, OF WHICH 10 WERE SELECTED FOR DEPOSITION BASED ON LOW ENERGY CRITERIA AND AGREEMENT BETWEEN CALCULATED AND EXPERIMENTAL CHEMICAL SHIFTS

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	Amber		D.A.CASE,T.A.DARDEN,T.E.CHEATHAM,III, C.L.SIMMERLING,J.WANG,R.E.DUKE,R.LUO, R.C.WALKER,W.ZHANG,K.M.MERZ,B.P.ROBERTS, B.WANG,S.HAYIK,A.ROITBERG,G.SEABRA, I.KOLOSSVARY,K.F.WONG,F.PAESANI,J.VANICEK, X.WU,S.R.BROZELL,T.STEINBRECHER,H.GOHLKE, Q.CAI,X.YE,J.WANG,M.-J.HSIEH,G.CUI,D.R.ROE, D.H.MATHEWS,M.G.SEETIN,C.SAGUI,V.BABIN, A. LUCHKO,S.GUSAROV,A.KOVALENKO,P.A.KOLLMAN.
2	structure solution	NMRPipe
3	structure solution	NMRView
4	structure solution	ARIA	1.2
5	structure solution	Amber