Atomic cryoEM structure of Hsp90-Cdc37-Cdk4 complex
ELECTRON MICROSCOPY
Sample
COMPLEX OF HUMAN HSP90BETA, HUMAN CDC37 AND HUMAN CDK4
Sample Components
HUMAN HSP90BETA
HUMAN CDC37
HUMAN CDC37
Specimen Preparation
Sample Aggregation State
PARTICLE
Vitrification Instrument
FEI VITROBOT MARK III
Cryogen Name
ETHANE
Sample Vitrification Details
LIQUID ETHANE
3D Reconstruction
Reconstruction Method
SINGLE PARTICLE
Number of Particles
114683
Reported Resolution (Å)
7.2
Resolution Method
Other Details
SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-3340. (DEPOSITION ID: 14281).
Refinement Type
HALF-MAPS REFINED INDEPENDENTLY
Symmetry Type
POINT
Point Symmetry
C1
Map-Model Fitting and Refinement
Id
1
Refinement Space
REAL
Refinement Protocol
FLEXIBLE FIT
Refinement Target
Overall B Value
141
Fitting Procedure
Details
Cdc37 crystal structure from PDB:1US7 was fit into EMD-3340 manually and then with UCSF Chimera "Fit In Map" tool. The model was truncated at residue ...
Cdc37 crystal structure from PDB:1US7 was fit into EMD-3340 manually and then with UCSF Chimera "Fit In Map" tool. The model was truncated at residue 260, as there was no reliable density for the rest of the crystal structure. PDB:5FWK and the above fit crystal structure for residues 148-260 were loaded in Coot. The residues 133-147 were built in by hand into the Cdc37 Reconstruction and residues 245-260 (helix) were rotated as a rigid body. To relieve atomic clashes or bond length/angle distortions at the linker regions, the resulting model was subjected to "Cartesian space relax" protocol within EMD-3340 map using Rosetta. Final model was selected using the combined score of Rosetta all-atom physically-realistic score and electron density score.
