WB
H
Endogenous
78
Rabbit
#P17812
1503
Product Information
Product Usage Information
Application | Dilution |
---|---|
Western Blotting | 1:1000 |
Storage
Specificity / Sensitivity
Species Reactivity:
Human
Source / Purification
Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Ala340 of human CTPS1 protein. Antibodies are purified by peptide affinity chromatography.
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).
Species Reactivity
Species reactivity is determined by testing in at least one approved application (e.g., western blot).
Western Blot Buffer
IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 5% w/v nonfat dry milk, 1X TBS, 0.1% Tween® 20 at 4°C with gentle shaking, overnight.
Applications Key
WB: Western Blotting
Cross-Reactivity Key
H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected
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