Kim, Y.O., Park, E.M., Seo, J.S., Nam, B.H., Kong, H.J., Kim, W.J., Kim, B.S., Kim, K.K., and Lee, S.J. (2011) Molecular Cloning and mRNA Expression of the Liver-Specific Cathepsin L1 Gene of the Olive Flounder, Paralichthys olivaceus. Bioscience, biotechnology, and biochemistry. 75(6):1214-1218.
We isolated a homolog of cathepsin L from a cDNA library of the olive flounder liver. The flounder cathepsin L1 transcript consisted of 1,221 bp that encoded a polypeptide of 334 amino acids. The overall identity between flounder cathepsin L1 and other cathepsin Ls was 50–64%, and flounder cathepsin L1 contained the highly conserved ERFNIN-motif. A phylogenetic tree indicated that flounder cathepsin L1 is in the same monophyletic group as zebrafish cathepsin Lc. RT-PCR analysis revealed that cathepsin L1 transcripts were expressed only in the liver. They were detected from 28 d post-hatching. Under starvation conditions, cathepsin L1 expression was decreased at 30 d.