Biological and soft-matter physics

Ambigrammatic Viruses

Prof. Michael Wilkinson
Department of Mathematics and Statistics, The Open University, UK
Date Thu, 19 Mar 2026
Time 12:10 – 13:20
Venue Zoom only

Abstract

Some simple RNA viruses have a surprising property: the
complementary strand of their genetic code lacks stop codons,
and could code for proteins.

I shall discuss some observations on the structure of the genetic code which explain
how this 'ambigrammatic' property can evolve, and which can distinguish
different explanations of why it offers a reproductive advantage.

A technique called ribosome profiling shows that the ambigrammatic viral
RNA becomes covered by a string of ribosomes, which do not detach from its end.

Mario Feingold is inviting you to a scheduled Zoom meeting.
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I speculate that this provides a mechanism to hide viral RNA from host cell
defences, which may be utilised by more complex viruses.

This talk reports collaboration with Gytis Dudas, Hanna Retallack, David Yllanes,
Greg Huber, Amy Kistler and Joe DeRisi, from Chan-Zuckerberg Biohub, San Francisco.
Created on 11-03-2026 by Feingold, Mario (mario) · Updated on 19-03-2026 by Feingold, Mario (mario)
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