Journal
VIRUSES-BASEL
Volume 14, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/v14112403
Keywords
Morbillivirus; virus discovery; Abrothrix; mouse morbillivirus; Raton olivaceo morbillivirus
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Researchers have identified a novel virus called Ratón olivaceo morbillivirus (RoMV) in South American long-haired and olive field mice, characterized by a unique genome structure with long intergenic regions and an additional accessory protein. Structural and functional annotation, genetic distance, and phylogenetic analysis suggest that RoMV is a new species within the genus Morbillivirus.
Morbilliviruses are negative-sense single-stranded monosegmented RNA viruses in the family Paramyxoviridae (order Mononegavirales). Morbilliviruses infect diverse mammals including humans, dogs, cats, small ruminants, seals, and cetaceans, which serve as natural hosts. Here, I report the identification and characterization of novel viruses detected in public RNAseq datasets of South American long-haired and olive field mice. The divergent viruses dubbed Raton olivaceo morbillivirus (RoMV) detected in renal samples from mice collected from Chile and Argentina are characterized by an unusually large genome including long intergenic regions and the presence of an accessory protein between the F and H genes redounding in a genome architecture consisting in 3 '-N-P/V/C-M-F-hp-H-L-5 '. Structural and functional annotation, genetic distance, and evolutionary insights suggest that RoMV is a member of a novel species within genus Morbillivirus tentatively named as South American mouse morbillivirus. Phylogenetic analysis suggests that this mouse morbillivirus is closely related to and clusters into a monophyletic group of novel rodent-borne morbilliviruses. This subclade of divergent viruses expands the host range, redefines the genomic organization and provides insights on the evolutionary history of genus Morbillivirus.
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