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R Recombinant
Recombinant: Superior lot-to-lot consistency, continuous supply, and animal-free manufacturing.

CTPS1 (E7M3Q) Rabbit mAb #31810

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  • WB
  • IP

    Supporting Data

    REACTIVITY H
    SENSITIVITY Endogenous
    MW (kDa) 78
    Source/Isotype Rabbit IgG
    Application Key:
    • WB-Western Blotting 
    • IP-Immunoprecipitation 
    Species Cross-Reactivity Key:
    • H-Human 

    Product Information

    Product Usage Information

    Application Dilution
    Western Blotting 1:1000
    Immunoprecipitation 1:50

    Storage

    Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.

    Protocol

    Specificity / Sensitivity

    CTPS1 (E7M3Q) Rabbit mAb recognizes endogenous levels of total CTPS1 protein. This antibody does not cross-react with CTPS2 protein.

    Species Reactivity:

    Human

    Source / Purification

    Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Ala340 of human CTPS1 protein.

    Background

    CTPS1 (cytidine triphosphate synthase 1 or CTP synthase 1) catalyzes the conversion of UTP to CTP through ATP-dependent amination (1). Research studies show that pyrimidine biosynthesis is upregulated in pancreatic cancer cell models of resistance to gemcitabine, a deoxycytidine analog. Increased pyrimidine biosynthesis leads to elevated levels of endogenous dCTP, which outcompetes gemcitabine from incorporating into DNA during replication and, therefore, reduces the anti-cancer effectiveness of gemcitabine. Induction of CTPS1 expression was observed in gemcitabine-resistant pancreatic cancer cell models. Gemcitabine resistance directly correlates with CTPS1 expression levels in various pancreatic cancer cell lines (2). Furthermore, CTPS1 expression was shown to increase in T cells upon T-cell receptor activation, suggesting a critical role of CTPS1 in the immune system (3).
    For Research Use Only. Not For Use In Diagnostic Procedures.
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