1QQ3

THE SOLUTION STRUCTURE OF THE HEME BINDING VARIANT ARG98CYS OF OXIDIZED ESCHERICHIA COLI CYTOCHROME B562

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	3MM R98C CYTOCHROME B562; 500MM PHOSPHATE BUFFER; 90% H2O, 10% D2O		500mM PHOSPHATE	4.8	AMBIENT	298
2	3D_15N-SEPARATED_NOESY	2.5MM R98C CYTOCHROME B562; 500MM PHOSPHATE BUFFER; 90% H2O, 10% D2O		500mM PHOSPHATE	4.8	AMBIENT	298
3	HNHA	2.5MM R98C CYTOCHROME B562; 500MM PHOSPHATE BUFFER; 90% H2O, 10% D2O		500mM PHOSPHATE	4.8	AMBIENT	298
4	1D NOE	3MM R98C CYTOCHROME B562; 500MM PHOSPHATE BUFFER; 90% H2O, 10% D2O		500mM PHOSPHATE	4.8	AMBIENT	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	800
2	Bruker	AVANCE	600

NMR Refinement
Method	Details	Software
TORSION ANGLE DYNAMICS FOLLOWED BY ENERGY MINIMIZATION	A TOTAL OF 4325 NOESY CROSS-PEAKS WAS ASSIGNED, INTEGRATED AND TRANSFORMED IN UPPER DISTANCE LIMITS; 23 DISTANCE CONSTRAINTS WERE DERIVED FROM 1D NOE EXPERIMENTS INVOLVING FAST RELAXING PARAMAGNETIC SHIFTED SIGNALS. TOTALLY, THEY CORRESPONDED TO 2595 UPPER DISTANCE LIMITS, OF WHICH 2145 WERE FOUND TO BE MEANINGFUL. IN ADDITION, 45 3JHNHA COUPLINGS OBTAINED FROM THE HNHA 3D SPECTRUM AND 397 PCS WERE USED FOR THE STRUCTURE CALCULATIONS.	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	ENERGY MINIMIZED AVERAGE STRUCTURE
Conformers Calculated Total Number
Conformers Submitted Total Number	1
Representative Model	(minimized average structure)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	XwinNMR
2	structure solution	DYANA	1.5	GUENTERT P., MUMENTHALER, C., & WUTHRICH, K.
3	data analysis	XEASY		ECCLES, C., GUENTERT P., BILLETER, M., & WUTHRICH, K.
4	structure solution	PSEUDODYANA		BANCI, L., BERTINI, I., CREMONINI, M.A., GORI SAVELLINI, G., LUCHINAT, C., WUTHRICH, K. & GUENTERT, P.
5	refinement	Amber	5.0	PEARLMAN, D.A., CASE, D.A., CALDWELL, J.W., ROSS, W.S., CHEATHAM, T.E., FERGUSON, D.M., SEIBEL, G.L., SINGH, U.C., WEINER, P.K., & KOLLMAN, P.A.