thumb|An example of an RNA stem-loop
thumb|An example of an RNA stem-loop
Stem-loops are nucleic acid secondary structural elements which form via intramolecular base pairing in single-stranded DNA or RNA. They are also referred to as hairpins or hairpin loops. A stem-loop occurs when two regions of the same nucleic acid strand, usually complementary in nucleotide sequence, base-pair to form a double helix that ends in a loop of unpaired nucleotides.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).