Carbamoyl phosphate synthetase-aspartate carbamoyltransferase-dihydroorotase (CAD) is a multifunctional protein that initiates and regulates mammalian de novo pyrimidine biosynthesis. This trifunctional protein which is associated with the enzymatic activities of the first 3 enzymes in the 6-step pathway of pyrimidine biosynthesis is the rate-limiting step in the de novo pyrimidine synthetic pathway. Although most of the CAD protein in the cell is cytosolic, phosphorylation at threonine 456 localizes the protein to the nucleus. While MAPK and EGF phosphorylate CAD at threonine 456, MAPK and c-myc have been found to induce over-expression of CAD.
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human breast carcinoma tissue labelling CAD with ab99312 at 1/200 (1µg/ml). Detection: DAB.
Western blot - CAD antibody (ab99312)
All lanes : Anti-CAD antibody (ab99312) at 0.04 µg/ml
Lane 1 : HeLa whole cell lysates at 50 µg Lane 2 : HeLa whole cell lysates at 15 µg Lane 3 : HeLa whole cell lysates at 5 µg Lane 4 : 293T whole cell lysates at 50 µg Lane 5 : NIH3T3 whole cell lysates at 50 µg