| Feature | precursor_RNA |
| Definition | any RNA species that is not yet the mature RNA product; may include 5' untranslated region (5'UTR), coding sequences (CDS, exon), intervening sequences (intron) and 3' untranslated region (3'UTR) |
| Optional Qualifiers |
/allele="free text" /function="free text" /gene="free text" /gene_synonym="free text" /map="free text" /note="free text" /operon="free text" /product="free text" /standard_name="free text" /trans_splicing |
| Comment | used for RNA which may be the result of post-transcriptional processing; if the RNA in question is known not to have been processed, use the prim_transcript key. |