Atypical kinases are protein kinases or putative protein kinases that do not share clear sequence similarity with conventional eukaryotic protein kinases, but they or their orthologs have been shown experimentally to have protein kinase activity. Atypical kinases are defined in FBrf0201870.
RhoGAP1A is related to the human BCR kinase, and KinBase includes RhoGAP1A (as well as human BCR and ABR) in the "Atypical -> BCR" group of kinases (http://kinase.com/web/current/kinbase/genes/Family/BCR/). However, RhoGAP1A (and ABR) lacks sequence conservation in the N-terminal kinase domain defined in BCR (e.g. PMID:8349582), and so RhoGAP1A is not included in the FlyBase ATYPICAL PROTEIN KINASES group.
KinBase includes Nipped-A (along with TRRAP genes from other species) in the "Atypical -> PIKK (phosphatidylinositol 3-kinase related kinase) -> TRRAP" group of kinases (http://kinase.com/web/current/kinbase/genes/Subfamily/TRRAP/) and it is included here - however, all TRRAP proteins are characterized as pseudokinases (PMID:31769470).