Rab GTPase activating protein for the small GTPases rab-6.1 and rab-6.2 (Probable). Probably acts through rab-6.1 and rab-6.2 to play a role in microRNA-mediated gene silencing in different tissue types (PubMed:33826611). Required for seam cell division and alae formation (PubMed:33826611). RNAi-mediated knockdown results in increased expression of the lin-41 protein, which is a target of the let-7 microRNA.