Enables cyclin binding activity. Predicted to be involved in several processes, including Golgi to lysosome transport; clathrin coat disassembly; and clathrin-coated pit assembly. Predicted to act upstream of or within several processes, including Golgi organization; animal organ development; and positive regulation of neural precursor cell proliferation. Predicted to be located in Golgi apparatus. Predicted to be active in cytoplasm; intracellular membrane-bounded organelle; and vesicle. Orthologous to human GAK (cyclin G associated kinase). [provided by Alliance of Genome Resources, Apr 2022]