Anti-RPS18 Antibody

A rabbit polyclonal reagent from Antibodies.com raised against ribosomal protein S18 (RPS18), supplied as 100 µl of unconjugated antibody at 1 mg/ml in phosphate-buffered saline (PBS) with 0.05% sodium azide at approximately pH 7.2. RPS18 is a core constituent of the 40S ribosomal subunit and is widely used as an internal loading control in immunoblotting because of its stable expression across many cell types and tissues. This antibody is validated for Western blot (WB) detection and cross-reacts with human, mouse, and rat samples, supporting comparative studies that span multiple model organisms.

The polyclonal format allows recognition of multiple epitopes on the ~17.7 kDa target, supporting consistent detection of endogenous RPS18 in whole-cell lysates, tissue homogenates, and subcellular fractions. Recommended handling includes storing the vial refrigerated at 4°C for short-term use and preparing aliquots to limit repeated freeze-thaw cycles for longer-term storage. Intended for research use only and in vitro applications such as protein expression normalization, where ribosomal proteins serve as reliable reference markers for total loaded protein.