Experiment: 6U6G

Solution NMR structure of the nodule-specific cysteine-rich peptide NCR044 from Medicago truncatula

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	50 mM sodium chloride, 20 mM sodium acetate, 1 mM [U-99% 13C; U-99% 15N] DEF19	93% H2O/7% D2O	70 mM	5.4	1 atm	293	Bruker AVANCE 750
2	3D HNCO	50 mM sodium chloride, 20 mM sodium acetate, 1 mM [U-99% 13C; U-99% 15N] DEF19	93% H2O/7% D2O	70 mM	5.4	1 atm	293	Varian INOVA 600
3	3D HNCACB	50 mM sodium chloride, 20 mM sodium acetate, 1 mM [U-99% 13C; U-99% 15N] DEF19	93% H2O/7% D2O	70 mM	5.4	1 atm	293	Varian INOVA 600
4	3D C(CO)NH	50 mM sodium chloride, 20 mM sodium acetate, 1 mM [U-99% 13C; U-99% 15N] DEF19	93% H2O/7% D2O	70 mM	5.4	1 atm	293	Varian INOVA 600
5	2D 1H-13C HSQC aliphatic	50 mM sodium chloride, 20 mM sodium acetate, 1 mM [U-99% 13C; U-99% 15N] DEF19	93% H2O/7% D2O	70 mM	5.4	1 atm	293	Bruker AVANCE 750
6	3D 1H-13C NOESY aliphatic	50 mM sodium chloride, 20 mM sodium acetate, 1 mM [U-99% 13C; U-99% 15N] DEF19-2	100% D2O	70 mM	5.4	1 atm	293	Varian INOVA 750
7	3D 1H-13C NOESY aromatic	50 mM sodium chloride, 20 mM sodium acetate, 1 mM [U-99% 13C; U-99% 15N] DEF19	93% H2O/7% D2O	70 mM	5.4	1 atm	293	Varian INOVA 750
9	3D 1H-15N NOESY	50 mM sodium chloride, 20 mM sodium acetate, 1 mM [U-99% 13C; U-99% 15N] DEF19	93% H2O/7% D2O	70 mM	5.4	1 atm	293	Bruker AVANCE 750
8	Deuterium exchange	50 mM sodium chloride, 20 mM sodium acetate, 1 mM [U-99% 13C; U-99% 15N] DEF19	93% H2O/7% D2O	70 mM	5.4	1 atm	293	Bruker AVANCE 750
10	3D 1H-13C NOESY aliphatic	50 mM sodium chloride, 20 mM sodium acetate, 1 mM [U-99% 13C; U-99% 15N] DEF19	93% H2O/7% D2O	70 mM	5.4	1 atm	293	Bruker AVANCE 750
11	3D H(CCO)NH	50 mM sodium chloride, 20 mM sodium acetate, 1 mM [U-99% 13C; U-99% 15N] DEF19	93% H2O/7% D2O	70 mM	5.4	1 atm	293	Varian INOVA 600

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	600
2	Bruker	AVANCE	750
3	Varian	INOVA	750

NMR Refinement
Method	Details	Software
torsion angle dynamics	STRUCTURE DETERMINATION WAS PERFORMED ITERATIVELY USING CYANA (AUTOMATED NOESY ASSIGNMENTS). A TOTAL OF 20 STRUCTURES OUT OF 100 WITH LOWEST TARGET FUNCTION FROM THE FINAL CYANA CALCULATION WERE TAKEN AND REFINED BY RESTRAINED MOLECULAR DYNAMICS/ENERGY MINIMIZATION IN EXPLICIT WATER (CNS) AFTER ADDING 0% TO THE UPPER BOUNDARY LIMIT OF THE DISTANCE RESTRAINTS AND THE VDW LIMIT TO THE LOWER RESTRAINT. PARAM19 WAS USED FOR THE WATER REFINEMENT CALCULATIONS. Disulfide bond restraints were identified by mass spectrometer and are included in the "NOE" file.	CNS

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	100
Conformers Submitted Total Number	19
Representative Model	1 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	data analysis	Sparky	3.13	Goddard
2	structure calculation	CYANA	2.1	Guntert, Mumenthaler and Wuthrich
3	processing	Felix	2007	Accelrys Software Inc.
4	refinement	CNS	1.1	Brunger, Adams, Clore, Gros, Nilges and Read
5	data analysis	PSVS	1.5	Bhattacharya and Montelione