Enables microtubule binding activity. Acts upstream of or within bicellular tight junction assembly; epithelial cell morphogenesis; and microtubule cytoskeleton organization. Located in bicellular tight junction and brush border. Is expressed in several structures, including alimentary system; early conceptus; genitourinary system; pituitary gland; and respiratory system. Orthologous to human CGN (cingulin). [provided by Alliance of Genome Resources, Apr 2022]