Biobrick: BBa_K1692004
Codon-optimized PAL with T7 promoter and FLAG tag Phenylalanine ammonia lyase (PAL) catalyzes the conversion of L-phenylalanine to trans-cinnamic acid. Our PAL construct is codon-optimized for expression in E. coli. The original sequence is derived from Anabaena variabilis. We chose the A. variabilis variant of PAL because the literature has characterized it as functioning well, in contrast to University of British Columbia’s 2013 PAL biobrick part (BBa_K1129003) from Streptomyces maritimus, which has much lower activity. Our construct includes the PAL coding sequence, a T7 inducible promoter, a ribosome binding site, and a FLAG-tag peptide sequence for easy and efficient protein purification. We have sequenced our construct and verified that all these components are indeed present.