AAV with CAG2 promoter driven C1V1(E162T)-TS-TdTomato
This AAV expresses C1V1(E162T)-TS-TdTomato driven by an ubiquitous CAG2 promoter.
The CAG2 promoter is derived from the commonly used 1.8kb CAG/CBA (also called CAGGS) promoter. To increase the cloning capacity of size-limiting vectors using the CAG promoter, such as AAV or lentiviral vectors, CAG2 was developed by deleting a portion of about 0.6Kb of the chicken beta-actin intron from the original CAG promoter.
C1V1 is a chimeric channelrhodopsin made to boost membrane expression higher than VChR1 but with a different light spectrum. It is composed of ChR1 and VChR1 fragments, and implements fast, potent optical excitation at red-shifted wavelengths. C1V1(E162T) mutant has an off-kinetic is half of C1V1.
The trafficking signal (KSRITSEGEYIPLDQIDINV) is also from the inward rectifier potassium channel Kir2.1; it serves to dramatically reduce intracellular accumulation and improve membrane targeting, leading to a profound increase of photocurrents. This is the basis for many third-generation optogenetics tools.
Ready-to-use AAV expressing C1V1(E162T)-TS-TdTomato driven by an ubiquitous CAG2 promoter. Available in AAV1, AAV2, AAV5, AAV6, AAV8, AAV9, AAV-DJ and other serotypes.