AVM v1, released 02-OCT-22

A manually curated database of aerosol-transmitted virus mutations, human diseases, and drugs

Mutation detail:


Mutation site N204S
Virus Influenzavirus A H1N1
Mutation level Amino acid Level
Gene/protein/region type PA
Gene ID 23308128
Country Russia
Mutation type nonsynonymous mutation
Genotype/subtype/clade -
Sample Human
Variants -
Viral reference sequence NC_026437.1
Drug/antibody/vaccine -
Transmissibility -
Transmission mechanism -
Pathogenicity -
Pathogenicity mechanism -
Immune escape mutation -
Immune escape mechanism -
RT-PCR primers probes -

Protein detail:


Protein name Polymerase PA
Uniprot protein ID C3W5X6
Protein length 716 amino acids
Protein description PA Plays an essential role in viral RNA transcription and replication by forming the heterotrimeric polymerase complex together with PB1 and PB2 subunits. The complex transcribes viral mRNAs by using a unique mechanism called cap-snatching. It consists in the hijacking and cleavage of host capped pre-mRNAs. These short capped RNAs are then used as primers for viral mRNAs. The PB2 subunit is responsible for the binding of the 5' cap of cellular pre-mRNAs which are subsequently cleaved after 10-13 nucleotides by the PA subunit that carries the endonuclease activity.

Literature information:


Pubmed ID 26992820
Clinical information No
Disease -
Published year 2016
Journal Influenza Other Respir Viruses
Title Rapid spread of influenza A(H1N1)pdm09 viruses with a new set of specific mutations in the internal genes in the beginning of 2015/2021 epidemic season in Moscow and Saint Petersburg (Russian Federation)
Author Andrey Komissarov,Artem Fadeev,Maria Sergeeva,Sergey Petrov,Kseniya Sintsova
Evidence Whole-genome analysis revealed a composition of specific mutations in the internal genes (D2E and M83I in NEP, E125D in NS1, M105T in NP, Q208K in M1, and N204S in PA-X) that probably emerged before the beginning of 2015/2021 epidemic season.