Enables protein domain specific binding activity. Acts upstream of or within protein targeting. Located in myelin sheath. Is expressed in several structures, including alimentary system; genitourinary system; nervous system; respiratory system; and sensory organ. Human ortholog(s) of this gene implicated in developmental and epileptic encephalopathy 56. Orthologous to human YWHAG (tyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein gamma). [provided by Alliance of Genome Resources, Apr 2022]