AVM v1, released 02-OCT-22

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

Mutation detail:


Mutation site H182R
Virus MERS-CoV
Mutation level Amino acid level
Gene/protein/region type ORF4b
Gene ID 14254597
Country -
Mutation type nonsynonymous mutation
Genotype/subtype/clade -
Sample cell line
Variants -
Viral reference sequence JX869059.2
Drug/antibody/vaccine -
Transmissibility -
Transmission mechanism -
Pathogenicity decrease
Pathogenicity mechanism -
Immune escape mutation -
Immune escape mechanism -
RT-PCR primers probes -

Protein detail:


Protein name ORF4b protein
Uniprot protein ID K9N643
Protein length 246 amino acids
Protein description ORF4b protein is one of the non-structural protein of MERS-CoV. ORF4b protein plays a role in the inhibition of host innate immunity by inhibiting the interaction between host IKBKE and MAVS. In turn, this inhibition prevents the production of host interferon beta. Additionally, inhibits host NF-kappa-B by interacting with host KPNA4 and thereby preventing the translocation of the NF-kappa-B complex into the nucleus by this importin.

Literature information:


Pubmed ID 30914508
Clinical information No
Disease -
Published year 2019
Journal mBio
Title Antagonism of dsRNA-Induced Innate Immune Pathways by NS4a and NS4b Accessory Proteins during MERS Coronavirus Infection
Author Courtney E Comar,Stephen A Goldstein,Yize Li,Boyd Yount,Ralph S Baric
Evidence FIG1