1O2F

COMPLEX OF ENZYME IIAGLC AND IIBGLC 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			10 mM SODIUM PHOSPHATE	7.0		308.00
2	(2) QUANTITATIVE J CORRELATION FOR COUPLING CONSTANTS			10 mM SODIUM PHOSPHATE	7.0		308.00
3	(3) 3D			10 mM SODIUM PHOSPHATE	7.0		308.00
4	4D HETERONUCLEAR SEPARATED			10 mM SODIUM PHOSPHATE	7.0		308.00
5	FILTERED NOE EXPTS			10 mM SODIUM PHOSPHATE	7.0		308.00
6	(4) IPAP EXPERIMENTS FOR DIPOLAR COUPLINGS. DIPOLAR COUPLINGS WERE MEASURED IN PHAGE PF1			10 mM SODIUM PHOSPHATE	7.0		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 THE NOE-DERIVED TERMS FOR THE NOE RESTRAINTS (INTRA AND INTERMOLECULAR), THE INTERFACIAL SIDECHAIN TORSION ANGLE RESTRAINTS FOR IIAGLC, THE BACKBONE AND SIDE CHAIN TORSION ANGLE RESTRAINTS FOR IIBGLC, THE DIPOLAR COUPLING RESTRAINTS FOR IIBGL (CLORE ET AL. J.MAGN.RESON. 131, 159-162 (1998); J.MAGN.RESON. 133, 216-221(1998)), THE RADIUS OF GYRATION (KUSZEWSKI ET AL. (1999), A QUARTIC VAN DER WAALS REPULSION TERM (NILGES ET AL. (1988) FEBS LETT. 229, 129- 136), AND A TORSION ANGLE DATABASE POTENTIAL OF MEAN FORCE (CLORE & KUSZEWSKI (2002) J.AM.CHEM.SOC 121, 2337-2338). THE STARTING COORDINATES FOR IIAGLC ARE FROM THE 2.1 ANGSTROM RESOLUTION X-RAY STRUCTURE (WITH PROTONS ADDED) OF E. COLI IIAGLC (MOLECULE 2 OF 2F3G; FEESE ET AL. BIOCHEMISTRY 36, 16087-16096 (1997)). THE BACKBONE COORDINATES AND NON- INTERFACIAL SIDECHAINS OF IIAGLC ARE TREATED AS A RIGID BODY. IN THIS ENTRY THE LAST COLUMN REPRESENTS THE AVERAGE RMS DIFFERENCE BETWEEN THE INDIVIDUAL SIMULATED ANNEALING STRUCTURES AND THE MEAN COORDINATE POSITIONS. IT IS IMPORTANT TO NOTE THAT THE VALUES GIVEN FOR THE BACKBONE ATOMS AND NON-INTERFACIAL SIDECHAINS OF IIAGLC PROVIDE ONLY A MEASURE OF THE PRECISION WITH WHICH THE RELATIVE ORIENTATION OF IIAGLC IN THE COMPLEX HAS BEEN DETERMINED AND DOES NOT TAKE INTO ACCOUNT THE THE ERRORS IN THE X-RAY COORDINATES OF IIAGLC RESIDUE NUMBERING: IIAGLC: 19-168 (RESIDUES 1-18 ARE DISORDERED IN SOLUTION AND NOT VISIBLE IN THE ELECTRON DENSITY MAP OF THE CRYSTAL STRUCTURE OF THE FREE PROTEIN). IIBGLC: 314-390 (CORRESPONDING TO RESIDUES 400-476 OF INTACT IIBCGLC. RESIDUES 301-314 ARE DISORDERED IN SOLUTION. PRO317 HAS BEEN MUTATED TO ALA TO REMOVE HETEROGENEITY ARISING FROM CIS-TRANS PROLINE ISOMERIZATION. PHOSPHATE: RESIDUE 200 EXPERIMENTAL RESTRAINTS: INTRAMOLECULAR INTERPROTON DISTANCE RESTRAINTS: IIBGLC: 987 (189 INTRARESIDUE, 273 SEQUENTIAL, (218 MEDIUM RANGE (1 < \|I-J\|<=5, 307 LONG RANGE (\|I-J>5) IIAGLC INTERFACIAL SIDE CHAINS: 30 INTERMOLECULAR INTERPROTON DISTANCE RESTRAINTS: 113 BACKBONE H-BOND RESTRAINTS FOR IIBGLC (2 PER H-BOND): 72 TORSION ANGLE RESTRAINTS: IIBGLC: 221 IIAGLC INTERFACIAL SIDE CHAINS: 34 RESIDUAL DIPOLAR COUPLINGS FOR IIBGLC: 174 (58 N-H, 58 N-C', 58 HN-C') 13CALPHA/BETA SHIFTS FOR IIBGLC: 138 THREE SETS OF COORDINATES ARE GIVEN: MODEL 3: RESTRAINED REGULARIZED MEAN COORDINATES OF THE UNPHOSPHORYLATED IIAGLC-IIBGLC COMPLEX OVERALL BACKBONE COORDINATE PRECISION (IIAGLC+IIBGLC): 0.31A HEAVY ATOM INTERFACE SIDECHAIN COORDINATE PRECISION (IIAGLC+IIBGLC): 0.67A BACKBONE COORDINATE PRECISION FOR IIBGLC: 0.21 A ALL HEAVY ATOM COORDINATE PRECISION FOR IIBGLC; 0.71 A MODEL 2: RESTRAINED REGULARIZED MEAN COORDINATES FOR THE MODEL OF THE DISSOCIATIVE PHOSPHORYL TRANSITION STATE IIAGLC-IIBGLC. EXPERIMENTAL RESTRAINTS ARE IDENTICAL TO THOSE USED FOR MODEL 3, BUT COVALENT GEOMETRY RESTRAINTS ARE INCLUDED RELATING TO THE PENTACOORDINATE PHOSPHORYL GROUP IN A TRIGONAL BIPYRAMIDAL GEOMETRY. THE STRUCTURE IS DERIVED FROM MODEL 3 BY RESTRAINED CONJOINED TORSION ANGLE/RIGID BODY MINIMIZATION. NO RESTRAINTS WERE EMPLOYED FOR THE NE2(HIS90/IIAGLC)-P AND SG(CYS35/IIBGLC)-P DISTANCES. THERE IS NO CHANGE IN BACKBONE RELATIVE TO MODEL 3 BUT THE NE2(HIS90/IIAGLC- SG(CYS35/IIBGLC) DISTANCE IS REDUCED FROM 5.75 A IN MODEL 3 TO 5.3 A IN MODEL 2. MODEL 1: RESTRAINED REGULARIZED MEAN COORDINATES FOR THE MODEL OF THE ASSOCIATIVE PHOSPHORYL TRANSITION STATE HPR-IIAGLC COMPLEX. CALCULATED LIKE MODEL 2 BUT WITH THE NE2(HIS90/IIAGLC)-P AND SG(CYS35/IIBGLC)-P DISTANCES RESTRAINED TO 2 A. THE STRUCTURE IS DERIVED FROM MODEL 3 BY RESTRAINED CONJOINED TORSION ANGLE/RIGID BODY MINIMIZATION. THE RMS DIFFERENCE BETWEEN THE MEAN STRUCTURES OF THE UNPHOSPHORYLATED COMPLEX (MODEL 3) AND THE TRANSITION STATE COMPLEX (MODEL 1) IS ONLY 0.1 A FOR BACKBONE COORDINATES IMMEDIATELY ADJACENT TO THE ACTIVE SITE HIS AND CYS (RESIDUES 89-91 OF IIAGLC AND 334-336 of IIBGLC). THE REMAINING BACKBONE COORDINATES DO NOT SHIFT.	X-PLOR NIH

NMR Ensemble Information
Conformer Selection Criteria	REGULARIZED MEAN STRUCTURES
Conformers Calculated Total Number	60
Conformers Submitted Total Number	3

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	X-PLOR NIH	(HTTP://NMR.CIT.NIH.GOV/XPLOR_NIH)	SCHWIETERS, KUSZEWSKI, TJANDRA, CLORE J.MAGN.RESON. 160, 66-73 (2003)

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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 R01GM157729.