AVM v1, released 02-OCT-22

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

Mutation detail:


Mutation site 10301C>A
Virus SARS-CoV-2
Mutation level Nucleotide level
Gene/protein/region type ORF1ab(3C-like proteinase)
Gene ID 43740578
Country France
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 33931941
Clinical information No
Disease -
Published year 2021
Journal EMBO Molecular Medicine
Title SARS-CoV-2 worldwide replication drives rapid rise and selection of mutations across the viral genome: a time-course study-potential challenge for vaccines and therapies
Author Stefanie Weber, Christina M Ramirez, Barbara Weiser, Harold Burger, Walter Doerfler
Evidence We examined mutations in 383,570 complete sequences with known sampling dates in GISAID up until January 20, 2021. Figure 1 shows the worldwide distribution of Spike mutations as well as other variants of interest over time from April 2020 to March 31, 2021, from complete sequences with a known collection date deposited in GISAID. Table 1 lists the signature mutations for the variants. Table 2 shows the total number of complete sequences each variant of interest (B.1.1.7 (the UK variant), 501Y.V2 (the South African variant) and 484K.V2 (B.1.1 lineage with S: E484K/D614G, V1176F N: A199S/R203K/G204R) deposited in GISAID by each country as of March 31, 2021.