2XDI

Tryptophan repressor with L75F mutation in its apo form (no L- tryptophan bound)

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	1H-15N HSQC	500 MM NACL, 50 MM NAH2PO4, AND 90% H2O/10% D2O PH 5.7			5.7		318.0
2	HNCACB	500 MM NACL, 50 MM NAH2PO4, AND 90% H2O/10% D2O PH 5.7			5.7		318.0
3	CBCA(CO) NH	500 MM NACL, 50 MM NAH2PO4, AND 90% H2O/10% D2O PH 5.7			5.7		318.0
4	C(CO)NH	500 MM NACL, 50 MM NAH2PO4, AND 90% H2O/10% D2O PH 5.7			5.7		318.0
5	HBHA(CO)NH	500 MM NACL, 50 MM NAH2PO4, AND 90% H2O/10% D2O PH 5.7			5.7		318.0
6	HC(CO)NH	500 MM NACL, 50 MM NAH2PO4, AND 90% H2O/10% D2O PH 5.7			5.7		318.0
7	1H NOESY	500 MM NACL, 50 MM NAH2PO4, AND 90% H2O/10% D2O PH 5.7			5.7		318.0

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

NMR Refinement
Method	Details	Software
CNS-XPLOR	REFINEMENT DETAILS CAN BE FOUND IN THE JRNL CITATION ABOVE. THE 20 MODELS IN THE DEPOSITED CO-ORDINATE FILE HAVE SUPERIMPOSED C-ALPHA TRACES OF ONLY THE SECONDARY STRUCTURE FORMING RESIDUES. THIS IS BECAUSE IT IS MORE INFORMATIVE TO ALIGN ONLY THE STABLE SEGMENTS THAN COMPLETE BACKBONES OF APO-L75F-TRPR PROTEIN DUE TO ITS FLEXIBLE NATURE.	CNS

NMR Ensemble Information
Conformer Selection Criteria	LEAST RESTRAINT VIOLATION
Conformers Calculated Total Number	40
Conformers Submitted Total Number	20
Representative Model	1 (n/a)

Additional NMR Experimental Information
Details	THE STRUCTURE WAS DETERMINED USING TRIPLE-RESONANCE NMR SPECTROSCOPY ON 13C, 15N-LABELED APO-L75F-TRPR

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	CNS		BRUNGER,ADAMS,CLORE,DELANO,GROS, GROSSE-KUNSTLEVE,JIANG,KUSZEWSKI,NILGES, PANNU,READ,RICE,SIMONSON,WARREN
2	structure solution	NMRVIEW