Triple helix

In the fields of geometry and biochemistry, a triple helix (pl.: triple helices) is a set of three congruent geometrical helices with the same axis, differing by a translation along the axis. This means that each of the helices keeps the same distance from the central axis. As with a single helix, a triple helix may be characterized by its pitch, diameter, and handedness. Examples of triple helices include triplex DNA,^[1] triplex RNA,^[2] the collagen helix,^[3] and collagen-like proteins.

^ Bernués J, Azorín F (1995). "Triple-Stranded DNA". Nucleic Acids and Molecular Biology. Vol. 9. Berlin, Heidelberg: Springer. pp. 1–21. doi:10.1007/978-3-642-79488-9_1. ISBN 978-3-642-79490-2.
^ Buske FA, Mattick JS, Bailey TL (May 2011). "Potential in vivo roles of nucleic acid triple-helices". RNA Biology. 8 (3): 427–439. doi:10.4161/rna.8.3.14999. PMC 3218511. PMID 21525785.
^ Bächinger HP (2005-05-03). Collagen: Primer in Structure, Processing and Assembly. Springer Science & Business Media. ISBN 9783540232728.

[1] Bernués J, Azorín F (1995). "Triple-Stranded DNA". Nucleic Acids and Molecular Biology. Vol. 9. Berlin, Heidelberg: Springer. pp. 1–21. doi:10.1007/978-3-642-79488-9_1. ISBN 978-3-642-79490-2.

[2] Buske FA, Mattick JS, Bailey TL (May 2011). "Potential in vivo roles of nucleic acid triple-helices". RNA Biology. 8 (3): 427–439. doi:10.4161/rna.8.3.14999. PMC 3218511. PMID 21525785.

[3] Bächinger HP (2005-05-03). Collagen: Primer in Structure, Processing and Assembly. Springer Science & Business Media. ISBN 9783540232728.

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Triple helix

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