1VRC

Complex of enzyme IIAmannose and the histidine-containing phosphocarrier protein HPr from escherichia coli nmr, restrained regularized mean structure

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	1) TRIPLE RESONANCE FOR ASSIGNMENT OF PROTEIN			40 mM SODIUM PHOSPHATE	6.5		308.00
2	(2) QUANTITATIVE J CORRELATION FOR COUPLING CONSTANTS			40 mM SODIUM PHOSPHATE	6.5		308.00
3	(3) 3D,4D HETERONUCLEAR SEPARATED, FILTERED NOE EXPTS'			40 mM SODIUM PHOSPHATE	6.5		308.00
6	(4) TRSOE-BASED 2D, 3D EXPERIMENTS FOR DIPOLAR COUPLINGS. DIPOLAR COUPLINGS WERE MEASURED IN A NEMATIC PHASE OF A 5% PEG/HEXANOL (SURFACTANT TO ALCOHOL RATION OF 0.96)			40 mM SODIUM PHOSPHATE	6.5		308.00

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE DMX	500
2	Bruker	AVANCE DMX	600
3	Bruker	AVANCE DRX	750
4	Bruker	AVANCE DRX	800
5	Bruker	AVANCE DRX	800

NMR Refinement
Method	Details	Software
CONJOINED RIGID BODY/TORSION ANGLE DYNAMICS	THE STRUCTURES WERE CALCULATED BY CONJOINED RIGID BODY/TORSION ANGLE DYNAMICS (SCHWIETERS & CLORE (2001) J.MAGN.RESON 152, 288-302). THE TARGET FUNCTIONS COMPRISES TERMS FOR NOE RESTRAINTS, SIDECHAIN TORSION ANGLE RESTRAINTS, RESIDUAL DIPOLAR COUPLING RESTRAINTS (CLORE ET AL. J.MAGN.RESON. 131, 159-162 (1998); J.MAGN.RESON.133, 216-221(1998)), A RADIUS OF GYRATION TERM (KUSZEWSKI ET AL.(1999), A QUARTIC VAN DER WAALS REPULSION TERM (NILGES ET AL. (1988) FEBS LETT. 229, 129- 136), AND A TORSION ANGLE CONFORMATIONAL DATABASE POTENTIAL OF MEAN FORCE (CLORE AND KUSZEWSKI 2002) J.AM.CHEM.SOC 124, 2866-2867). THE STARTING COORDINATE COME FROM THE X-RAY STRUCTURES (WITH PROTONS ADDED) OF E. COLI HPR (1POH, JIA ET AL. (1993) J.BIOL.CHEM. 268, 22940-22501, RESOLUTION 2.0 A); AND IIAMAN (1PDO, NUNN ET AL. (1996) J.MOL.BI J.MOL.BIOL. 259, 502-511; RESOLUTION 1.7A). THE BACKBONE COORDINATES AND NON-INTERFACIAL SIDECHAINS ARE TREATED AS RIGID BODIES THROUGHOUT WITH THE IIAMAN DIMER HELD FIXED, THE TWO HPR MOLECULES ALLOWED TO ROTATE AND TRANSLATE, AND THE AXIS OF THE SINGLE DIPOLAR COUPLING ALIGNMENT TENSOR FREE TO ROTATE. THE INTERFACIAL SIDECHAINS ARE GIVEN FULL TORSIONAL DEGREES OF FREEDOM.	X-PLOR NIH

NMR Ensemble Information
Conformer Selection Criteria	REGULARIZED MEAN STRUCTURES
Conformers Calculated Total Number	100
Conformers Submitted Total Number	2

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	X-PLOR NIH	(HTTP://NMR.CIT.NIH.GOV/XPLOR_NIH)	CLORE, KUSZEWSKI, SCHWIETERS, TJANDRA
2	structure solution	X-PLOR NIH		CLORE, KUSZEWSKI, SCHWIETERS, TJANDRA

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.