Spirocuta

Spirocuta
	Cell exhibiting 'euglenoid motion' or metaboly, characteristic of this clade
Scientific classification
Domain:	Eukaryota
Clade:	Discoba
Phylum:	Euglenozoa
Class:	Euglenida
Clade:	; Cavalier-Smith, 2016
Orders
	Anisonemia Anisonemida; Natomonadida; ; Peranemida; Euglenophyceae Rapazida; Eutreptiales; Euglenales; ;
Synonyms
	Helicales Paerschke et al., 2017;

Spirocuta (from Latin spira 'coil, spire' and cutis 'skin') is a clade of euglenids, single-celled eukaryotes or protists belonging to the phylum Euglenozoa. They are distinguished from other euglenids by active deformation of their cell shape, a process called euglenid motion or metaboly. This is made possible by a high number of spirally arranged protein strips that run below their cell membrane and confer the cell with flexibility. These strips compose the helicoidal pellicle, a trait referenced by the alternative name Helicales.

^ Cite error: The named reference Higher Euglenozoa was invoked but never defined (see the help page).
^ Cite error: The named reference Lax Cho Keeling 2023 was invoked but never defined (see the help page).
^ Cite error: The named reference Kostygov 2021 was invoked but never defined (see the help page).
^ Stefan Paerschke; Almut H. Vollmer; Angelika Preisfeld (8 May 2017). "Ultrastructural and immunocytochemical investigation of paramylon combined with new 18S rDNA-based secondary structure analysis clarifies phylogenetic affiliation of Entosiphon sulcatum (Euglenida: Euglenozoa)". Organisms Diversity and Evolution. 17 (1): 509–520. doi:10.1007/S13127-017-0330-X. ISSN 1439-6092. Wikidata Q125677096.

[Higher_Euglenozoa-1] Cite error: The named reference Higher Euglenozoa was invoked but never defined (see the help page).

[Lax_Cho_Keeling_2023-2] Cite error: The named reference Lax Cho Keeling 2023 was invoked but never defined (see the help page).

[Kostygov_2021-3] Cite error: The named reference Kostygov 2021 was invoked but never defined (see the help page).

[Paerschke_2017-4] Stefan Paerschke; Almut H. Vollmer; Angelika Preisfeld (8 May 2017). "Ultrastructural and immunocytochemical investigation of paramylon combined with new 18S rDNA-based secondary structure analysis clarifies phylogenetic affiliation of Entosiphon sulcatum (Euglenida: Euglenozoa)". Organisms Diversity and Evolution. 17 (1): 509–520. doi:10.1007/S13127-017-0330-X. ISSN 1439-6092. Wikidata Q125677096.

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