8WLS

Bcl-xL in complex with HBx BH3 delta C peptide


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural Insights into the Interaction between the C-Terminal-Deleted BH3-like Motif Peptide of Hepatitis B Virus X Protein and Bcl-x L.

Kusunoki, H.Sakamoto, T.Kobayashi, N.Kohno, T.Wakamatsu, K.Nagata, T.

(2024) Biochemistry 63: 632-643

  • DOI: https://doi.org/10.1021/acs.biochem.3c00709
  • Primary Citation of Related Structures:  
    8WLS

  • PubMed Abstract: 

    Hepatitis B virus X protein (HBx) plays a crucial role in the development of hepatocellular carcinoma (HCC) associated with hepatitis B virus (HBV) infection. The full-length HBx protein interacts with Bcl-x L and is involved in the HBV replication and cell death processes. The three hydrophobic residues Trp120, Leu123, and Ile127 of the HBx BH3-like motif are essential for the Bcl-x L -binding. On the other hand, various lengths of C-terminal-truncated HBx mutants are frequently detected in HCC tissues, and these mutants, rather than the full-length HBx, appear to be responsible for HCC development. Notably, the region spanning residues 1-120 of HBx [HBx(1 and 120)] has been strongly associated with an increased risk of HCC development. However, the mode of interaction between HBx(1-120) and Bcl-x L remains unclear. HBx(1-120) possesses only Trp120 among the three hydrophobic residues essential for the Bcl-x L -binding. To elucidate this interaction mode, we employed a C-terminal-deleted HBx BH3-like motif peptide composed of residues 101-120. Here, we present the NMR complex structure of Bcl-x L and HBx(101-120). Our results demonstrate that HBx(101-120) binds to Bcl-x L in a weaker manner. Considering the high expression of Bcl-x L in HCC cells, this weak interaction, in conjunction with the overexpression of Bcl-x L in HCC cells, may potentially contribute to HCC development through the interaction between C-terminal-truncated HBx and Bcl-x L .


  • Organizational Affiliation

    Research Center for Biological Products in the Next Generation, National Institute of Infectious Diseases, Musashimurayama, Tokyo 208-0011, Japan.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Bcl-2-like protein 1156Homo sapiensMutation(s): 0 
Gene Names: BCL2L1
UniProt & NIH Common Fund Data Resources
Find proteins for Q07817 (Homo sapiens)
Explore Q07817 
Go to UniProtKB:  Q07817
PHAROS:  Q07817
GTEx:  ENSG00000171552 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ07817
Sequence Annotations
Expand
  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Protein X25Hepatitis B virusMutation(s): 0 
UniProt
Find proteins for P0C689 (Hepatitis B virus genotype C subtype ad (isolate Japan/S-179/1988))
Explore P0C689 
Go to UniProtKB:  P0C689
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0C689
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Japan Society for the Promotion of Science (JSPS)Japan18K06152
Japan Society for the Promotion of Science (JSPS)Japan20K06524
Japan Society for the Promotion of Science (JSPS)Japan23K05664
Japan Agency for Medical Research and Development (AMED)Japan22ak0101097
Japan Society for the Promotion of Science (JSPS)Japan22K06574

Revision History  (Full details and data files)

  • Version 1.0: 2024-03-20
    Type: Initial release
  • Version 1.1: 2024-05-15
    Changes: Database references