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Docked structure between SUMO1 and ZZ-domain from CBP
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
15N IPAP-HSQC
20 mM MES
93% H2O/7% D2O
6
ambient
298
2
15N IPAP-HSQC
20 mM MES, 90% H2O, 10% D2O
90% H2O/10% D2O
6
ambient
298
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Varian
INOVA
600
NMR Refinement
Method
Details
Software
simulated annealing
Starting models for ZZ-domain of CBP is 1TOT and apo-structure of SUMO1 is 1A5R. In both cases author used the first model in the ensemble as starting structure for the RDC-refinement. In the case of the ZZ-domain, used published structural restraints from BMRB in combination with RDCs measured on the complex. For SUMO1, constructed synthetic distance restraints from proton-proton distances (since no published restraints were available for apo-SUMO1) and used these for refinement along with RDCs measured on the complex.
Xplor-NIH and a simulated annealing protocol were used for all refinement work and Haddock/CNS was used for generating the complex.