1EII

NMR STRUCTURE OF HOLO CELLULAR RETINOL-BINDING PROTEIN II

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_15N-separated_NOESY	1.5 mM CELLULAR RETINOL-BINDING PROTEIN II U-15N,13C, complexed with all-trans retinol in 1-to-1 molar ratio; 20 mM phosphate buffer	95% H2O/5% D2O	0.081	7.4	ambient	298
2	3D_13C-separated_NOESY	1.5 mM CELLULAR RETINOL-BINDING PROTEIN II U-15N,13C, complexed with all-trans retinol in 1-to-1 molar ratio; 20 mM phosphate buffer	99% D2O	0.081	7.4	ambient	298
3	2D NOESY	1.5 mM CELLULAR RETINOL-BINDING PROTEIN II U-15N,13C, complexed with all-trans retinol in 1-to-1 molar ratio; 20 mM phosphate buffer	95% H2O/5% D2O	0.081	7.4	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	UNITY	500
2	Varian	UNITYPLUS	500

NMR Refinement
Method	Details	Software
distance geometry & simulated annealing	The structure calculations were carried out using TINKER, a software package for molecular mechanics and dynamics. The protocol employs metric matrix distance geometry with pairwise Gaussian metrization followed by simulated annealing. The unique distance geometry algorithm implemented in TINKER overcomes the sampling and scaling problems of earlier distance geometry methods and is computationally more efficient.	Tinker

NMR Ensemble Information
Conformer Selection Criteria	FINAL PENALTY FUNCTION VALUES WITHIN 2 STANDARD DEVIATIONS FROM THE MEAN
Conformers Calculated Total Number	30
Conformers Submitted Total Number	25
Representative Model	2 (closest to the average)

Additional NMR Experimental Information
Details	The structure was determined using triple-resonance NMR spectroscopy

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	Tinker	3.3	Ponder
2	refinement	Tinker	3.3	Ponder