Chimeric 5′UTR-luciferase constructs were cloned by FastCloning using Phusion HF polymerase according to manufacturer’s protocol (NEB) (Li et al, 2011 (link)). pGEM-luc and pSP64 Poly(A) vectors were purchased from Promega. NotI and BglII sites were first cloned into pSP64 Poly(A) vector, and luciferase was cloned upstream of the poly(A) sequence. 5′UTR from intestine and kidney/liver isoforms were cloned from GeneBlocks (Integrated DNA Technologies) directly 5′ to the luciferase sequence. Plasmid sequences were all verified by Sanger sequencing across inserts.
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