Non-proteolytic ubiquitination of HBx controls HBV replication

Virol Sin. 2024 Apr;39(2):338-342. doi: 10.1016/j.virs.2024.01.008. Epub 2024 Feb 1.

Abstract

  1. The expression level of TRIM21 in patients is negatively correlated with the replication and integration of HBV.

  2. TRIM21 was found to trigger non-proteolytic ubiquitination of X protein of HBV.

  3. This study proposes that the PRYSPRY and RING domains in TRIM21 dimer can form a docking conformation for HBx binding.

  4. TRIM21-mediated HBx ubiquitination disrupts the DDB1 recruitment to HBx and stabilize Smc6.

Publication types

  • Letter

MeSH terms

  • Hepatitis B virus* / genetics
  • Hepatitis B virus* / physiology
  • Host-Pathogen Interactions
  • Humans
  • Trans-Activators* / genetics
  • Trans-Activators* / metabolism
  • Ubiquitination*
  • Viral Regulatory and Accessory Proteins* / genetics
  • Viral Regulatory and Accessory Proteins* / metabolism
  • Virus Replication*

Substances

  • Viral Regulatory and Accessory Proteins
  • hepatitis B virus X protein
  • Trans-Activators