About CD249
The ENPEP gene encodes glutamyl aminopeptidase, a type II integral membrane protein with an extracellular zinc-binding domain. This protein can upregulate blood pressure by cleaving the N-terminal aspartate from angiotensin II, and can regulate blood vessel formation and enhance tumorigenesis in some tissues. Along with ANPEP and DPP4, ENPEP was found to be a candidate co-receptor for the coronavirus SARS-CoV-2, which causes COVID-19. [provided by RefSeq, Apr 2020]

About Alexa Fluor 680
Alexa Fluor™ 680 (AF680, Alexa 680) has an excitation peak at 679 nm and an emission peak at 702 nm, and is spectrally similar to Cy®5.5 (GE Healthcare), IR680® (Licor), iFluor® 680 (ATT Bioquest) and iFluor® 700 (ATT Bioquest). Alexa 680 is commonly used for flow cytometry, fluorescence microscopy and super-resolution microscopy.