Predicted to enable obsolete SH3/SH2 adaptor activity; receptor tyrosine kinase binding activity; and signaling adaptor activity. Involved in several processes, including engulfment of apoptotic cell; positive regulation of distal tip cell migration; and positive regulation of engulfment of apoptotic cell. Human ortholog(s) of this gene implicated in several diseases, including carcinoma (multiple); chronic myeloid leukemia; and invasive ductal carcinoma. Is an ortholog of human CRK (CRK proto-oncogene, adaptor protein) and CRKL (CRK like proto-oncogene, adaptor protein).