Required directly or indirectly for the phosphorylation of drpr which is necessary for the interaction of drpr with shark and subsequent glial phagocytic activity (PubMed:18432193). Together with drpr and shark, promotes the migration of macrophages to sites of wounding as part of a signaling cascade where Src42A detects production of hydrogen peroxide at wound sites which triggers phosphorylation of drpr and subsequent recruitment and activation of shark (PubMed:26028435). Essential for correct eye morphogenesis (ommatidial R7 neuron formation) which requires the Ras1/MAPK signal transduction pathway (PubMed:8682295). May be involved in the regulation of cytoskeleton organization and cell-cell contacts in developing ommatidia (PubMed:8682295). Involved in phosphorylation of Dscam1, a cell surface receptor involved in targeting of growing axons during eye morphogenesis, and its interaction partner the SH2/SH3 adapter protein dock/dreadlocks (PubMed:12014990). During embryogenesis, involved in regulation of dorsal closure where it may have a role in activating the JNK pathway in leading edge cells during this process (PubMed:16831834).

(UniProt, Q9V9J3)