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. 2021 Jul 14;12:712710. doi: 10.3389/fmicb.2021.712710

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Copyright © 2021 Smertina, Hall, Urakova, Strive and Frese.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Calicivirus non-structural protein processing, oligomerization, and domains. The coding sequences for non-structural proteins are shown in pink (NS1/2), blue (NS4), or gray (all other non-structural proteins), while coding sequences for structural proteins are shown in green (VP1 and VP2). The ability of some proteins to oligomerize is illustrated by staggered boxes. Black scissors indicate the presence of a caspase-3 cleavage site; white scissors indicate a viral 3C-like protease cleavage site. VPD, viroporin domain; HR, hydrophobic region; MAD, membrane-associated domain; H-NC, H-box and NC motif (asparagine-cysteine); MERES, mimic of an endoplasmic reticulum (ER) export signal; and FFAT, phenylalanine-phenylalanine acidic tract. Genes and gene products are drawn to scale.