Anti-Csk (phospho-S364) Antibody

Raised in rabbit against the C-terminal Src kinase, this polyclonal reagent from Antibodies.com selectively recognizes the phosphorylated serine 364 residue of human Csk. Because S364 sits within an autoregulatory motif that controls catalytic activity toward Src-family members, the antibody is used to monitor pathway activation and feedback inhibition in cell signaling studies. Cross-reactivity with mouse and rat Csk enables consistent readouts across common mammalian model systems.

Supplied at 1 mg/ml in phosphate buffered saline with 0.05% sodium azide at approximately pH 7.2, the unconjugated preparation is suited to western blot workflows, where the phospho-specific signal can be paired with total Csk blots to track dynamic changes in kinase regulation. The 100 µl pack supports multiple membrane probing rounds, and the polyclonal antibody pool tolerates minor variation around the phospho-epitope.