1Q2N

REFINED Solution NMR structure of the Z domain of STAPHYLOCOCCAL PROTEIN A


SOLUTION NMR
NMR Spectrometer Information
SpectrometerManufacturerModelField Strength
1VarianMODIFIED UNITY 500500
NMR Refinement
MethodDetailsSoftware
SIMULATED ANNEALING WITH RESTRAINED MOLECULAR DYNAMICS, PROTOCAL USED: ANNEAL.INPTHE STRUCTURES ARE BASED ON A TOTAL OF 769 CONFORMATIONAL RESTRAINTS. SUMMARY OF EXPERIMENTAL CONSTRAINTS: DISTANCE CONSTRAINTS: TOTAL = 536; INTRA-RESIDUE [I=J] = 224; SEQUENTIAL [(I-J)=1] = 142; MEDIUM RANGE [1<(I-J)<5] 105; LONG RANGE [(I-J)>=5] = 65; NUMBER OF DISTANCE CONSTRAINTS RESIDUE = 9.2; DIHEDRAL-ANGLE CONSTRAINTS = 107 RESIDUAL DIPOLAR COUPLING CONSTRAINTS = 126 (34 N-H, 43 HA-CA, 4 TOTAL NUMBER OF CONSTRAINTS PER RESIDUE = 13.3; NUMBER OF LONG RANGE CONSTRAINTS PER RESIDUE = 3.3; NUMBER OF STRUCTURES COMPUTED = 100; NUMBER OF STRUCTURES USED = 10. AVERAGE RESIDUAL CONSTRAINT VIOLATIONS: DISTANCE VIOLATIONS 0.1-0.2 ANG = 7.7, 0. 0.8, >0.5 ANG = 0.3. AVERAGE R.M.S. DISTANCE VIOLATION = 0.03 AN AVERAGE DIHEDRAL ANGLE VIOLATIONS: >0 DEG = 0; RMSD VALUES: BACKBONE ATOMS (N,C,C') = 1.2 ANG; BACKBONE ATOMS(N,C,C') OF ORDERED RESIDUES = 0.4 ANG; ALL HEAVY = 1.7 ANG; ALL HEAVY ATOMS OF ORDERED RESIDUES = 1.0 ANG. PROCHECK USING ORDERED RESIDUES (5-36,39-57): MOST FAVORED REGIONS = 91.4%; ADDITIONAL ALLOWED REGIONS = 8.4%; GENEROUSLY ALLOWED REGIONS = 0.2%; DISALLOWED REGIONS = 0%.CNS
NMR Ensemble Information
Conformer Selection Criteriastructures with the lowest energy
Conformers Calculated Total Number100
Conformers Submitted Total Number10
Representative Model1 (lowest energy)
Additional NMR Experimental Information
DetailsNMR EXPERIMENTS CONDUCTED: 2D PFG-[15N]HSQC, 3D PFG-HNCO, 3D PFG-(HA)CA(CO)NH, 3D PFG-HA(CA)(CO)NH, 3D PFG-HA(CA)NH, 3D PFG-CBCANH, 3D PFG-CBCA(CO)NH, 3D PFG- (HA)CANH, 3D PFG-HN(CA)CO, 3D PFG-HCCNH-TOCSY, 3D PFG-HCC (CO)NH-TOCSY, 2D [15N]HSQC-IPAP, 3D Ca-coupled HNCO
Computation: NMR Software
#ClassificationVersionSoftware NameAuthor
1refinementCNS1.0BRUNGER, A.T.
2structure solutionCNS1.0BRUNGER, A.T.