TAEL
Protein DomainTAEL is an engineered optogenetic transcription factor optimized for zebrafish in which blue light induces TAEL dimerization, binding to the C120 promoter element, and activation of downstream transcription. TAEL 2.0 is an improved transgenic implementation that enables inducible expression at late embryonic and larval stages and produces faster, higher reporter expression than the original system.