FlpN27::nMagHigh1 consists of the N-terminal 27 amino acids of the Saccharomyces cerevisiae FLP recombinase, tagged at the C-terminal end with nMagHigh1, a negatively charged engineered domain that can heterodimerize with a compatible positively charged 'pMag'-type domain upon stimulation with blue light (for details of nMagHigh1 see PMID:25708714). FlpN27::nMagHigh1 forms one half of a photo-inducible split-FLP recombinase system: when combined in vivo with a complementary split-FLP fragment fused to a compatible pMag-type domain (such as pMagHigh1::FlpC28) and exposed to blue light, the light-induced interaction between the nMag/pMag pair can reconstitute a functional FLP recombinase (PMID:30659191, PMID:31649244).