The DENN protein module contains a longin domain, a DENN domain and a d-DENN domain.  Nookala et al. (2012) identified a DENN module in folliculin (FLCN), the Birt-Hogg-Dube tumour suppressor.  The DENN module is believed to be a GEF for Rab-GTPases, although FLCN is believed to act as a GAP for RagC (Tsun et al., … Read more…