Acts upstream of or within blood coagulation and cell morphogenesis. Colocalizes with anchored component of external side of plasma membrane. Is expressed in dorsal root ganglion; embryo; liver; and spinal cord. Used to study Bernard-Soulier syndrome. Human ortholog(s) of this gene implicated in Bernard-Soulier syndrome; Bernard-Soulier syndrome type A2; myocardial infarction; non-arteritic anterior ischemic optic neuropathy; and platelet-type bleeding disorder 3. Orthologous to human GP1BA (glycoprotein Ib platelet subunit alpha). [provided by Alliance of Genome Resources, Apr 2022]