Author: Gilbert, Clément; Tengs, Torstein
Title: No species-level losses of s2m suggests critical role in replication of SARS-related coronaviruses Cord-id: wx02me8p Document date: 2021_8_9
ID: wx02me8p
Snippet: The genetic element s2m has been acquired through horizontal transfer by many distantly related viruses, including the SARS-related coronaviruses. Here we show that s2m is evolutionarily conserved in these viruses. Though several lineages of severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2) devoid of the element can be found, these variants seem to have been short lived, indicating that they were less evolutionary fit than their s2m-containing counterparts. On a species-level, how
Document: The genetic element s2m has been acquired through horizontal transfer by many distantly related viruses, including the SARS-related coronaviruses. Here we show that s2m is evolutionarily conserved in these viruses. Though several lineages of severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2) devoid of the element can be found, these variants seem to have been short lived, indicating that they were less evolutionary fit than their s2m-containing counterparts. On a species-level, however, there do not appear to be any losses and this pattern strongly suggests that the s2m element is essential to virus replication in SARS-CoV-2 and related viruses. Further experiments are needed to elucidate the function of s2m.
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