msGFP2 is a monomeric green fluorescent protein with an excitation peak of 489nm and an emission peak of 509nm in vitro. msGFP2 has superfolder properties and is as photostable as EGFP. It is an artificial derivative of the naturally occurring fluorescent protein encoded by the Aequorea victoria GFP gene (UniProtKB:P42212) (PMID:32415747).