Carbamoyl phosphate synthetase 1 (CPS1), a rate-limiting enzyme in the urea cycle, catalyzes the conversion of ammonia and bicarbonate to carbamoyl phosphate in mitochondria.
Non-small cell lung carcinoma (NSCLC) cells with oncogenic KRAS and loss of the tumor suppressor LKB1 express CPS1 and depend on this enzyme for growth.
CPS1 maintains pyrimidine/purine balance in these cancer cells.
Silencing CPS1 reduces the pyrimidine to purine ratio and stalls DNA synthesis, leading to DNA damage and cancer cell death (1).
In addition, the tumor suppressor p53 represses the expression of urea cycle enzymes CPS1, OTC, and ARG1 and, therefore, causes the accumulation of ammonia, suppressing cancer growth (2).
Furthermore, research studies suggest that hypermethylation-mediated downregulation of CPS1 expression may contribute to the progression of normal hepatocytes to hepatocellular carcinoma (HCC) (3).
CPS1 was identified to be the antigen detected by Hep Par-1 antibody (4).
Applications:Suitable for use in Immunohistochemistry.
Other applications not tested.
Recommended Dilution:Immunohistochemistry (paraffin): 1:100-1:400Optimal dilutions to be determined by the researcher.
Storage and Stability:May be stored at 4℃ for short-term only.
Aliquot to avoid repeated freezing and thawing.
Store at -20℃.
Aliquots are stable for 12 months after receipt.
For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
仕様
Size：100ul
抗体種類：Mab
宿主：mouse
Source Antibody：human
Grade：Purified
Purity：Purified
Form：Supplied as a liquid in PBS, 0.09% sodium azide
Specificity：Recognizes endogenous levels of total human CPS1/Hep Par-1 protein, which is present in the liver and small intestine.
