6GV7

Cadmium(II) form of A44H mutant of shortened metallothionein from Pseudomonas fluorescens Q2-87 (residues 1-52)

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	0.5 mM [U-13C; U-15N] metallothionein, 2 mM CADMIUM ION, 50 mM [U-2H] TRIS, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.4	1 atm	300	Bruker AVANCE 600
2	2D 1H-13C HSQC aliphatic	0.5 mM [U-13C; U-15N] metallothionein, 2 mM CADMIUM ION, 50 mM [U-2H] TRIS, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.4	1 atm	300	Bruker AVANCE 600
3	2D 1H-13C HSQC aromatic	0.5 mM [U-13C; U-15N] metallothionein, 2 mM CADMIUM ION, 50 mM [U-2H] TRIS, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.4	1 atm	300	Bruker AVANCE 600
4	3D HNCO	0.5 mM [U-13C; U-15N] metallothionein, 2 mM CADMIUM ION, 50 mM [U-2H] TRIS, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.4	1 atm	300	Bruker AVANCE 600
5	3D HN(CO)CA	0.5 mM [U-13C; U-15N] metallothionein, 2 mM CADMIUM ION, 50 mM [U-2H] TRIS, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.4	1 atm	300	Bruker AVANCE 600
6	3D HNCACB	0.5 mM [U-13C; U-15N] metallothionein, 2 mM CADMIUM ION, 50 mM [U-2H] TRIS, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.4	1 atm	300	Bruker AVANCE 600
7	3D CBCA(CO)NH	0.5 mM [U-13C; U-15N] metallothionein, 2 mM CADMIUM ION, 50 mM [U-2H] TRIS, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.4	1 atm	300	Bruker AVANCE 600
8	3D HCCH-TOCSY	0.5 mM [U-13C; U-15N] metallothionein, 2 mM CADMIUM ION, 50 mM [U-2H] TRIS, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.4	1 atm	300	Bruker AVANCE 600
9	3D HCCH-TOCSY	0.5 mM [U-13C; U-15N] metallothionein, 2 mM CADMIUM ION, 50 mM [U-2H] TRIS, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.4	1 atm	300	Bruker AVANCE 600
10	3D 1H-15N NOESY	0.5 mM [U-13C; U-15N] metallothionein, 2 mM CADMIUM ION, 50 mM [U-2H] TRIS, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.4	1 atm	300	Bruker AVANCE 700
11	3D 1H-13C NOESY aliphatic	0.5 mM [U-13C; U-15N] metallothionein, 2 mM CADMIUM ION, 50 mM [U-2H] TRIS, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.4	1 atm	300	Bruker AVANCE 700
12	3D 1H-13C NOESY aromatic	0.5 mM [U-13C; U-15N] metallothionein, 2 mM CADMIUM ION, 50 mM [U-2H] TRIS, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.4	1 atm	300	Bruker AVANCE 700
13	1D 113Cd	1 mM metallothionein, 4 mM [U-113Cd] CADMIUM ION, 50 mM [U-2H] TRIS, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.4	1 atm	320	Bruker AVANCE II 500
14	2D 1H-113Cd HSQC-TOCSY	1 mM metallothionein, 4 mM [U-113Cd] CADMIUM ION, 50 mM [U-2H] TRIS, 50 mM sodium chloride	90% H2O/10% D2O	50 mM	7.4	1 atm	320	Bruker AVANCE II 500

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	600
3	Bruker	AVANCE	700
2	Bruker	AVANCE II	500

NMR Refinement
Method	Details	Software
simulated annealing		Xplor-NIH

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	20
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	TopSpin	4.0	Bruker Biospin
2	processing	TopSpin	3.5	Bruker Biospin
3	chemical shift assignment	CARA	1.9.1.5	Keller and Wuthrich
4	peak picking	UNIO	2.02	Hermann
5	structure calculation	CYANA	3.97	Guntert, Mumenthaler and Wuthrich
6	refinement	Xplor-NIH	4.0	Schwieters, Kuszewski, Tjandra and Clore

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.