Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.

Selenoproteins are proteins containing an uncommon amino acid selenocysteine (Sec). Sec is inserted by a specific translational machinery that recognizes a stem-loop structure, the SECIS element, at the 3' UTR of selenoprotein genes and recodes a UGA codon within the coding sequence. As UGA is normally a translational stop signal, selenoproteins are generally misannotated and designated tools have to be developed for this class of proteins. Here, we present two new computational methods for selenoprotein identification and analysis, which we provide publicly through the web servers at [Link] or [Link] SECISearch3 replaces its predecessor SECISearch as a tool for prediction of eukaryotic SECIS elements. Seblastian is a new method for selenoprotein gene detection that uses SECISearch3 and then predicts selenoprotein sequences encoded upstream of SECIS elements. Seblastian is able to both identify known selenoproteins and predict new selenoproteins. By applying these tools to diverse eukaryotic genomes, we provide a ranked list of newly predicted selenoproteins together with their annotated cysteine-containing homologues. An analysis of a representative candidate belonging to the AhpC family shows how the use of Sec in this protein evolved in bacterial and eukaryotic lineages.
What is the name of the stem loop present in the 3' end of genes encoding for selenoproteins?

Elis Stromgren's son was the astronomer Bengt Stromgren, who succeeded his father in Copenhagen in 1940.
Who is the offspring of Elis Strömgren?

Delta Chi () (del-ta kai) or D-Chi is an international Greek letter college social fraternity formed on October 13, 1890, at Cornell University, initially as a professional fraternity for law students.

What city was Delta Chi formed in?