A versatile building block: the structures and functions of negative-sense single-stranded RNA virus nucleocapsid proteins

Abstract

Nucleocapsid protein (NPs) of negative-sense singlestranded RNA (-ssRNA) viruses function in different stages of viral replication, transcription, and maturation. Structural investigations show that -ssRNA viruses that encode NPs preliminarily serve as structural building blocks that encapsidate and protect the viral genomic RNA and mediate the interaction between genomic RNA and RNA-dependent RNA polymerase. However, recent structural results have revealed other biological functions of -ssRNA viruses that extend our understanding of the versatile roles of virally encoded NPs.

Keywords

-ssRNA virus / nucleocapsid protein / crystal structure / function

References

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