Limited variation during circulation of a polyomavirus in the human population involves the COCO-VA toggling site of Middle and Alternative T-antigen(s).

Abstract excerpt

We have recently shown that the trichodysplasia spinulosa-associated polyomavirus (TSPyV) belongs to a large monophyletic group of mammalian polyomaviruses that experienced accelerated codon-constrained Val-Ala (COCO-VA) toggling at a protein site common to both Middle and Alternative T-antigens (MT/ALTO). Here we analyzed thirteen, mostly newly sequenced TSPyV genomes, representing ~40% of reported TS disease...

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