Correlation of amino acid residues in the M1 and M2 proteins of influenza virus with high yielding properties.
The ability of influenza A viruses to replicate to high titer in the allantoic sac of the chicken embryo has been mapped to the matrix protein gene (RNA 7). Because influenza A/WSN/33 (H1N1) virus grows poorly in this host but contains a matrix protein gene with a sequence similar to sequences from viruses that grow well in eggs, we derived a single gene reassortant containing only the M gene from A/WSN/33 (H1N1) in a background of the other 7 RNA segments from A/Philippines/2/82 (H3N2) (a low yielding virus, hy-). This reassortant replicated 10 times better than the A/WSN parent itself, indicating that the high yielding (hy+) phenotype of the A/WSN/33 M gene may be suppressed by one of the other genes of A/WSN/33. Comparison of M gene sequences between hy+ (including A/WSN/33) and hy- strains allowed us to correlate specific amino acid positions in M1 and M2 proteins with the growth properties of influenza viruses.
Klimov
A I
AI
Research Institute for Viral Preparations, Academy of Medical Sciences, U.S.S.R., Moscow.
Sokolov
N I
NI
Orlova
N G
NG
Ginzburg
V P
VP
D000595:Amino Acid Sequence; D000818:Animals; D002642:Chick Embryo / Q000382:microbiology; D005814:Genes, Viral; D008969:Molecular Sequence Data; D009975:Orthomyxoviridae / Q000235:genetics* / Q000254:growth & development; D014763:Viral Matrix Proteins / Q000235:genetics*; D014779:Virus Replication; D000086082:Viroporin Proteins
D014763:Viral Matrix Proteins; C031540:M-protein, influenza virus; C488936:M1 protein, Influenza A virus; C488937:M2 protein, Influenza A virus; D000086082:Viroporin Proteins