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Solution structure of the alternative conformation of XCL1/Lymphotactin
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
3D_15N-separated_NOESY
1.0 mM XCL1 U-15N/13C, 20 mM sodium phosphate, 95% H2O, 5% D2O
95% H2O/5% D2O
22
6.0
AMBIENT
313
2
3D_13C-separated_NOESY
1.0 mM XCL1 U-15N/13C, 20 mM sodium phosphate, 95% H2O, 5% D2O
95% H2O/5% D2O
22
6.0
AMBIENT
313
4
3D_13C-F1-filtered_13C-F3-separated_NOESY
0.6 mM XCL1 U-15N/13C, 0.6 mM XCL1 unlabeled, 20 mM sodium phosphate, 95% H2O, 5% D2O
95% H2O/5% D2O
22
6.0
AMBIENT
313
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Bruker
DRX
600
NMR Refinement
Method
Details
Software
AUTOMATED METHODS WERE USED FOR BACKBONE CHEMICAL SHIFT ASSIGNMENT AND ITERATIVE NOE REFINEMENT. FINAL STRUCTURES WERE OBTAINED BY MOLECULAR DYNAMICS IN EXPLICIT SOLVENT
HOMODIMER STRUCTURES ARE BASED ON A TOTAL OF 1295 NOE CONSTRAINTS ( 320 INTRA, 370 SEQUENTIAL, 104 MEDIUM, 420 LONG RANGE and 81 INTERMONOMER CONSTRAINTS) AND 131 PHI AND PSI DIHEDRAL ANGLE CONSTRAINTS. CONSTRAINT WERE IN ONE ASSIGNED AND VALIDATED IN ONE MONOMER AND THEN DUPLICATED TO GENERATE A SYMMETRY RELATED CONSTRAINT IN THE SECOND MONOMER. CONSTRAINT TOTALS LISTED ABOVE INCLUDE CONSTRAINTS FROM BOTH MONOMERS.