Intronless Genes


Most eukaryotic protein‐coding genes are composed of exon and intron sequences. Intron derived sequences within primary transcripts are eliminated by ribonucleic acid (RNA) splicing. A small number of protein‐coding genes are intronless; their primary transcripts are processed at their 5′ and 3′ ends like other premessenger RNAs, but no splicing is needed. Examples of intronless genes are genes for histone and interferon.

Keywords: introns; intronless genes; retroposons; histones; histone genes


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Web Links

H1 histone family, member 0 (H1F0); Locus ID: 3005. LocusLink:

H1 histone family, member T (testis‐specific) (H1FT); Locus ID: 3010. LocusLink:

H2A histone family, member Y (H2AFY); Locus ID: 9555. LocusLink:

H3 histone, family 3A (H3F3A); Locus ID: 3020. LocusLink:

H1 histone family, member 0 (H1F0); MIM number: 142708. OMIM:‐post/Omim/dispmim?142708

H1 histone family, member T (testis‐specific) (H1FT); MIM number: 142712. OMIM:‐post/Omim/dispmim?142712

H3 histone, family 3A (H3F3A); MIM number: 601128. OMIM:‐post/Omim/dispmim?601128

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How to Cite close
Doenecke, Detlef, and Albig, Werner(Sep 2005) Intronless Genes. In: eLS. John Wiley & Sons Ltd, Chichester. [doi: 10.1038/npg.els.0005022]