AVM v1, released 02-OCT-22

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

Mutation detail:


Mutation site 8220T>C
Virus SARS-CoV-2
Mutation level Nucleotide level
Gene/protein/region type ORF1ab(NSP3)
Gene ID 43740578
Country Bangladesh
Mutation type -
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 ORF1ab polyprotein
Uniprot protein ID P0DTC1
Protein length 7096 amino acids
Protein description ORF1ab, the largest gene, contains overlapping open reading frames that encode polyproteins PP1ab and PP1a. The polyproteins are cleaved to yield 16 nonstructural proteins, NSP1-16. Production of the longer (PP1ab) or shorter protein (PP1a) depends on a -1 ribosomal frameshifting event. The proteins, based on similarity to other coronaviruses, include the papain-like proteinase protein (NSP3), 3C-like proteinase (NSP5), RNA-dependent RNA polymerase (NSP12, RdRp), helicase (NSP13, HEL), endoRNAse (NSP15), 2'-O-Ribose-Methyltransferase (NSP16) and other nonstructural proteins. SARS-CoV-2 nonstructural proteins are responsible for viral transcription, replication, proteolytic processing, suppression of host immune responses and suppression of host gene expression. The RNA-dependent RNA polymerase is a target of antiviral therapies.

Literature information:


Pubmed ID 34587212
Clinical information No
Disease -
Published year 2021
Journal PLoS One
Title Wave-wise comparative genomic study for revealing the complete scenario and dynamic nature of COVID-19 pandemic in Bangladesh
Author Ishtiaque Ahammad, Mohammad Uzzal Hossain, Anisur Rahman, Zeshan Mahmud Chowdhury, Arittra Bhattacharjee
Evidence The presence of mutational changes in specific coordinates of the SARS-CoV-2 genome sequences was also analyzed in this study (S8 File).