AVM v1, released 02-OCT-22

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

Mutation detail:


Mutation site N205S
Virus Influenzavirus A H1N1
Mutation level Amino acid Level
Gene/protein/region type NS1
Gene ID 23308111
Country USA
Mutation type nonsynonymous mutation
Genotype/subtype/clade -
Sample Human
Variants -
Viral reference sequence FJ966086.1
Drug/antibody/vaccine -
Transmissibility -
Transmission mechanism -
Pathogenicity -
Pathogenicity mechanism -
Immune escape mutation -
Immune escape mechanism -
RT-PCR primers probes -

Protein detail:


Protein name Nonstructural Protein 1
Uniprot protein ID C3W611
Protein length 219 amino acids
Protein description The non-structural protein 1 (NS1) is a crucial influenza A virus immune regulator that antagonizes antiviral response. The NS1 protein counteracts the production of IFNs and the activities of IFN-induced proteins that restrict influenza virus replication. Furthermore, NS1 is a multifunctional regulatory viral protein that plays a critical role as a posttranscriptional regulatory factor in the life cycle of influenza virus; specifically, binding virion RNA. NS1 protein consists of 2 distinct functional domains connected by a flexible linker region (LR): an N-terminal RNA- binding domain (RBD, aa 1-73) and a C-terminal effector domain (ED, aa 74-207). The nucleotide sequence (NLS) (aa 35-41) overlaps the sequences needed for dsRNA binding.

Literature information:


Pubmed ID 28637754
Clinical information No
Disease -
Published year 2017
Journal J Virol
Title Functional Evolution of Influenza Virus NS1 Protein in Currently Circulating Human 2009 Pandemic H1N6 Viruses
Author Amelia M Clark,Aitor Nogales,Luis Martinez-Sobrido,David J Topham,Marta L DeDiego
Evidence Here we show that the NS1 protein from currently circulating pH1N1 viruses has evolved to encode 6 amino acid changes (E55K, L90I, I123V, E125D, K131E, and N205S) with respect to the original protein.