AVM v1, released 02-OCT-22

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

Mutation detail:


Mutation site L9P
Virus SARS-CoV-2
Mutation level Amino acid level
Gene/protein/region type ORF7a
Gene ID 43740573
Country Brazil
Mutation type nonsynonymous mutation
Genotype/subtype/clade -
Sample Human
Variants -
Viral reference sequence NC_045512.2
Drug/antibody/vaccine -
Transmissibility -
Transmission mechanism -
Pathogenicity -
Pathogenicity mechanism -
Immune escape mutation -
Immune escape mechanism -
RT-PCR primers probes -

Protein detail:


Protein name ORF7a protein
Uniprot protein ID P0DTC7
Protein length 121 amino acids
Protein description The orf 7a of SARS-CoV-2 is a transmembrane protein with four regions from the N-terminal: 1) the first 15 amino acids form a signal peptide which is hydrolyzed by the infected host cells; 2) the amino acids from 16 to 96 constitute the intracellular domain; 3) the 97- 117 amino acids are hydrophobic amino acids constituting a transmembrane domain; and 4) the last five amino acids constitute the C- terminal of the orf7a. The orf7a interacts with the S, M, E, and the orf3a proteins, which suggest a role of the protein in the assembling of the virus and in the binding and invasion of the virus to the host cells.

Literature information:


Pubmed ID 34099808
Clinical information No
Disease -
Published year 2021
Journal Scientific Reports
Title SARS-CoV-2 mutations in Brazil: from genomics to putative clinical conditions
Author Luis Fernando Saraiva Macedo Timmers,Julia Vasconcellos Peixoto,Rodrigo Gay Ducati,Jose Fernando Ruggiero Bachega,Leandro de Mattos Pereira
Evidence We combined genomic and structural analysis to evaluate genomes isolated from different regions of Brazil and show that the most prevalent mutations were located in the S, N, ORF3a and ORF6 genes, which are involved in different stages of viral life cycle and its interaction with the host cells.(Supplementary Information)