Predicted to enable several functions, including microtubule binding activity; protein homodimerization activity; and ubiquitin protein ligase binding activity. Acts upstream of or within negative regulation of microtubule depolymerization. Located in cytoplasm and microtubule cytoskeleton. Is expressed in several structures, including 1st branchial arch; alimentary system; brain; genitourinary system; and sensory organ. Used to study Opitz-GBBB syndrome and microphthalmia. Human ortholog(s) of this gene implicated in Opitz GBBB syndrome type I. Orthologous to human MID1 (midline 1). [provided by Alliance of Genome Resources, Apr 2022]