NCIt definition : Human JAG1 wild-type allele is located within 20p12.1-p11.23 and is approximately
36 kb in length. This allele, which encodes protein jagged-1, may play a role in the
progression of hematopoiesis. Mutation of the gene is associated with Alagille syndrome
type 1 and tetralogy of Fallot.;
NCIt note : A JAG1 gene mutation G821A produces a mixed population of the gene product in which
a portion of the protein undergoes abnormal glycosylation and is retained within the
cell. This decrease in the amount of protein that is found on the cell surface can
result in Alagille syndrome-like cardiovascular defects without liver dysfunction.
(OMIM);