About S1P1
The protein encoded by this gene is structurally similar to G protein-coupled receptors and is highly expressed in endothelial cells. It binds the ligand sphingosine-1-phosphate with high affinity and high specificity, and suggested to be involved in the processes that regulate the differentiation of endothelial cells. Activation of this receptor induces cell-cell adhesion. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2016]

About eFluor 660
eFluor™ 660 (eF660) from Thermo Fisher Scientific has an excitation peak at 633 nm and an emission peak at 669 nm. It is useful in fluorescence microscopy and flow cytometry applications.