8ULM

Chickpea (Cicer arientinum) nodule-specific cysteine-rich peptide NCR13: Solution NMR structure of the isomer with C4:C23, C15:C30, and C10:C28 disulfide bonds

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	20 mM sodium acetate, 50 mM sodium chloride	93% H2O/7% D2O	70 mM	5.3	1 atm	293	Varian INOVA 600
2	2D 1H-13C HSQC aliphatic	20 mM sodium acetate, 50 mM sodium chloride	100% D2O	70 mM	5.3	1 atm	293	Varian INOVA 600
3	2D 1H-13C HSQC aromatic	20 mM sodium acetate, 50 mM sodium chloride	100% D2O	70 mM	5.3	1 atm	293	Varian INOVA 600
4	2D 1H-1H NOESY	20 mM sodium acetate, 50 mM sodium chloride	100% D2O	70 mM	5.3	1 atm	293	Varian INOVA 600
5	2D 1H-1H TOCSY	20 mM sodium acetate, 50 mM sodium chloride	100% D2O	70 mM	5.3	1 atm	293	Varian INOVA 600
6	2D 1H-15N HSQC	20 mM sodium acetate, 50 mM sodium chloride	100% D2O	70 mM	5.3	1 atm	293	Varian INOVA 600
10	3D 1H-15N TOCSY	20 mM sodium acetate, 50 mM sodium chloride	93% H2O/7% D2O	70 mM	5.3	1 atm	293	Varian INOVA 600
9	2D 1H-1H NOESY	20 mM sodium acetate, 50 mM sodium chloride	93% H2O/7% D2O	70 mM	5.3	1 atm	293	Varian INOVA 600
8	2D 1H-1H TOCSY	20 mM sodium acetate, 50 mM sodium chloride	93% H2O/7% D2O	70 mM	5.3	1 atm	293	Varian INOVA 600
11	3D 1H-13C NOESY	20 mM sodium acetate, 50 mM sodium chloride	93% H2O/7% D2O	70 mM	5.3	1 atm	293	Varian INOVA 600

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	600

NMR Refinement
Method	Details	Software
torsion angle dynamics	It was not possible to verify the disulfide bonding pattern using mass spectrometry or other methods. Therefore the alphafold predicted disulfide pattern was used in the structure calculations. The structure was first solved using CYANA and then refined in explicit water adding 10% to the upper bound of the NOE restraints.	CNS

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	Felix	2007	Accelrys Software Inc.
2	structure calculation	CYANA	2.1	Guntert, Mumenthaler and Wuthrich
3	refinement	CNS		Brunger, Adams, Clore, Gros, Nilges and Read
4	peak picking	Poky		Manthey, Tonelli, Clos II, Rahimi, Markley and Lee
5	data analysis	PSVS	3.135	Bhattacharya and Montelione
6	data analysis	TALOS+		unknown

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.