1DGN

SOLUTION STRUCTURE OF ICEBERG, AN INHIBITOR OF INTERLEUKIN-1BETA GENERATION


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

ICEBERG: a novel inhibitor of interleukin-1beta generation.

Humke, E.W.Shriver, S.K.Starovasnik, M.A.Fairbrother, W.J.Dixit, V.M.

(2000) Cell 103: 99-111

  • DOI: https://doi.org/10.1016/s0092-8674(00)00108-2
  • Primary Citation of Related Structures:  
    1DGN

  • PubMed Abstract: 

    ProIL-1beta is a proinflammatory cytokine that is proteolytically processed to its active form by caspase-1. Upon receipt of a proinflammatory stimulus, an upstream adaptor, RIP2, binds and oligomerizes caspase-1 zymogen, promoting its autoactivation. ICEBERG is a novel protein that inhibits generation of IL-1beta by interacting with caspase-1 and preventing its association with RIP2. ICEBERG is induced by proinflammatory stimuli, suggesting that it may be part of a negative feedback loop. Consistent with this, enforced retroviral expression of ICEBERG inhibits lipopolysaccharide-induced IL-1beta generation. The structure of ICEBERG reveals it to be a member of the death-domain-fold superfamily. The distribution of surface charge is complementary to the homologous prodomain of caspase-1, suggesting that charge-charge interactions mediate binding of ICEBERG to the prodomain of caspase-1.


  • Organizational Affiliation

    Department of Cellular and Molecular Biology, University of Michigan Medical School, Ann Arbor 48109, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ICEBERG (PROTEASE INHIBITOR)89Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P57730 (Homo sapiens)
Explore P57730 
Go to UniProtKB:  P57730
PHAROS:  P57730
GTEx:  ENSG00000255501 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP57730
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-10-09
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-02-16
    Changes: Data collection, Database references, Derived calculations
  • Version 1.4: 2024-05-22
    Changes: Data collection