1-Palmitoyl lysophosphatidic acid (1-Palmitoyl LPA) is a LPA analog containing palmitic acid at the sn-1 position. LPA binds to one of at least five different G protein-coupled receptors to mediate a variety of biological responses including cell proliferation, smooth muscle contraction, platelet aggregation, neurite retraction, and cell motility. Additionally, 1-palmitoyl LPA enhances the action of β-lactam antibiotics (ampicillin, piperacillin, and ceftazidime) on various strains of P. aeruginosa, a pathogen associated with pulmonary disease and pneumonia, via binding both Ca2+ and Mg2+.