superhelix


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superhelix

(so͞o′pər-hē′lĭks)
n. pl. super·helixes or super·helices (hĕl′ĭ-sēz′, hē′lĭ-)
A structure in which a helix is itself coiled into a helix, as in a DNA supercoil.

su′per·hel′i·cal (-hĕl′ĭ-kəl, -hē′lĭ-) adj.
su′per·hel′i·cal·ly adv.
References in periodicals archive ?
The C-terminal domain (IV) is an [alpha]-helical domain formed by 19 [alpha]-helices that are organized into a superhelix. The helices are: H12 (Ser582-Val589), H13 (Ser596-Ser612), H14 (Ser617-Arg628), H15 (Asn633-Thr647), H16 (Phe655-Ala668), H17 (Trp674-Phe689), H18 (Leu693-Asn702), H19 (Ser713-lle723), H20 (Ala727-Cys735), H21 (Leu740-Lys747), H22 (Leu757-Tyr762), H23 (Leu766), H24 (Leu777-Asn782), H25 (Ala787-Ala798), H26 (Asp802-Leu806), H27 (Ser813-Met814), H28 (Lys818-Phe828), H29 (Leu832-Glu837) and H30 (Va1842-Va1867).
It is the number of turns that the duplex axis makes about the superhelix axis.
Presently new STE morphologies are being generated with by use of advanced fabrication knowledge, as can be seen in Figure 4(b) with the creation of a double helix column, termed a superhelix (Sunal 1999; Messier et al.