Experiment: 2LZZ

Solution structure of a mutant of the triheme cytochrome PpcA from Geobacter sulfurreducens sheds light on the role of the conserved aromatic residue F15

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	0.4 mM [U-100% 15N] F15L polypeptide, 3 mM PROTOPORPHYRIN IX CONTAINING FE, 45 mM sodium phosphate, 0.04 % sodium azide	93% H2O/7% D2O	45	7.1	ambient	298
2	2D 1H-1H TOCSY	1 mM F15L polypeptide, 3 mM PROTOPORPHYRIN IX CONTAINING FE, 45 mM sodium phosphate, 0.04 % sodium azide	93% H2O/7% D2O	100	7.1	ambient	298
3	2D 1H-1H COSY	1 mM F15L polypeptide, 3 mM PROTOPORPHYRIN IX CONTAINING FE, 45 mM sodium phosphate, 0.04 % sodium azide	93% H2O/7% D2O	100	7.1	ambient	298
4	2D 1H-1H NOESY	1 mM F15L polypeptide, 3 mM PROTOPORPHYRIN IX CONTAINING FE, 45 mM sodium phosphate, 0.04 % sodium azide	93% H2O/7% D2O	100	7.1	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	600

NMR Refinement
Method	Details	Software
simulated annealing		TopSpin

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	200
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	TopSpin		Bruker Biospin
2	collection	TopSpin		Bruker Biospin
3	chemical shift assignment	Sparky		Goddard
4	chemical shift calculation	PARADYANA		Turner, D. L. Brennan, L. Chamberlin, S. G. Louro, R. O. Xavier, A. V.
5	refinement	PARADYANA		Turner, D. L. Brennan, L. Chamberlin, S. G. Louro, R. O. Xavier, A. V.
6	superimposition	MOLMOL		Koradi, Billeter and Wuthrich
7	visual inspection	MOLMOL		Koradi, Billeter and Wuthrich
8	validation	CING		Nabuurs, Spronk, Krieger, Maassen, Vriend and Vuister