Thermo Scientific pCMV-Red Firefly Luc is a constitutive expression vector having the luciferase gene under the CMV (Cytomegalovirus) promoter for co-transfection and normalization control to account for experimental variation in combination with other reporters in a gene regulation study using the intracellular red firefly luciferase reporter with excellent light intensity.. Features of Red Firefly Luc: • Red Firefly Luc Vectors contains a mutant form of the firefly luciferase gene that has a red-shifted emission spectrum. • pMCS vector contains a multiple cloning site for cloning a promoter to study its regulatory potential. • pCMV and pTK vectors have the luciferase gene under the CMV promoter and Herpes Simplex Virus (HSV) thymidine kinase (TK) promoter, respectively. • These pCMV and pTK constitutive expression vectors can be used as normalization controls to account for experimental variation in combination with other reporters. These vectors are subject to a limited use label license.