@InProceedings{Bac:Nar:Swi:GCB01, author = {Rolf Backofen and ~N.S.~Narayanaswamy and Firas Swidan}, editor = {Edgar Wingender}, title = {Protein similarity search under {mRNA} structural constraints: application to selenocysteine incorporation}, booktitle = "Proc. of German Conference on Bioinformatics (GCB2001)", year = 2001, pages = {135-140}, isbn = {3-00-008114-3}, abstract = {Selenocysteine is the recently found 21th amino acid, which occurs in all kingdoms of life. Selenocysteine is encoded by the STOP-codon UGA. For its insertion, it requires a specific mRNA sequence downstream the UGA-codon that forms a hairpin like structure (called Sec insertion sequence (SECIS)). We consider the computational problem of generating new amino acid sequences containing selenocysteine. This requires to find an mRNA sequence that is similar to the SECIS-consensus, that is able to form the secondary structure required for selenocysteine insertion, and whose translation is maximally similar to the original amino acid sequence. We show that the problem can be solved in linear time when the structure does not contain pseudoknots.} }