AVM v1, released 02-OCT-22

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

Mutation detail:


Mutation site 27661C>T
Virus SARS-CoV-2
Mutation level Nucleotide level
Gene/protein/region type ORF7a
Gene ID 43740573
Country Iceland
Mutation type -
Genotype/subtype/clade -
Sample Human
Variants -
Viral reference sequence MN908947.3
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 33207070
Clinical information No
Disease -
Published year 2020
Journal Transboundary and Emerging Diseases
Title Global SNP analysis of 11,183 SARS-CoV-2 strains reveals high genetic diversity
Author Fangfeng Yuan, Liping Wang, Ying Fang, Leyi Wang
Evidence Table3