Enables microtubule binding activity and protein domain specific binding activity. Involved in positive regulation of protein binding activity. Located in several cellular components, including autophagosome membrane; dendrite; and neuronal cell body. Part of microtubule associated complex. Orthologous to several human genes including MAP1LC3B (microtubule associated protein 1 light chain 3 beta). [provided by Alliance of Genome Resources, Apr 2022]