4P7I: Crystal Structure of the Merlin Ferm/dcaf1 Complex

The tumor suppressor gene Nf2 product, Merlin, plays vital roles in controlling proper development of organ sizes by specifically binding to a large number of target proteins localized both in cytoplasm and nuclei. The FERM domain of Merlin is chiefly responsible for its binding to target proteins, although the molecular basis governing these interactions are poorly understood due to lack of structural information. Here we report the crystal structure of the Merlin FERM domain in complex with its binding domain derived from the E3 ubiquitin ligase substrate adaptor DCAF1 (also known as VPRBP). Unlike target binding modes found in ERM proteins, the Merlin-FERM binding domain of DCAF1 folds as a beta-hairpin and binds to the alpha1/beta5-groove of the F3 lobe of Merlin-FERM via extensive hydrophobic interactions. In addition to providing the first structural glimpse of a Merlin-FERM/target complex, the structure of the Merlin/DCAF1 complex is likely to be valuable for understanding Merlin's interactions with its binding partners other than DCAF1.
PDB ID: 4P7IDownload
MMDB ID: 119081
PDB Deposition Date: 2014/3/27
Updated in MMDB: 2014/05 
Experimental Method:
x-ray diffraction
Resolution: 2.6  Å
Source Organism:
Mus musculus
Similar Structures:
Biological Unit for 4P7I: dimeric; determined by author and by software (PISA)
Molecular Components in 4P7I
Label Count Molecule
Proteins (2 molecules)
Molecule annotation
Protein Vprbp
Molecule annotation
Chemical (1 molecule)
* Click molecule labels to explore molecular sequence information.

Citing MMDB