3CL3 image
Entry Detail
PDB ID:
3CL3
Title:
Crystal Structure of a vFLIP-IKKgamma complex: Insights into viral activation of the IKK signalosome
Biological Source:
Host Organism:
PDB Version:
Deposition Date:
2008-03-18
Release Date:
2008-06-17
Method Details:
Experimental Method:
Resolution:
3.20 Å
R-Value Free:
0.28
R-Value Work:
0.26
Space Group:
P 32 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:ORF K13
Chain IDs:A, B
Chain Length:183
Number of Molecules:2
Biological Source:Human gammaherpesvirus 8
Polymer Type:polypeptide(L)
Description:NF-kappa-B essential modulator
Chain IDs:C (auth: D), D (auth: E)
Chain Length:130
Number of Molecules:2
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
Crystal structure of a vFlip-IKKgamma complex: insights into viral activation of the IKK signalosome.
Mol.Cell 30 620 631 (2008)
PMID: 18538660 DOI: 10.1016/j.molcel.2008.04.029

Abstact

Key to the pathogenicity of several viruses is activation of the canonical nuclear factor-kappaB (NF-kappaB) transcriptional pathway. Subversion of this tightly regulated mechanism is achieved through the production of host mimetic viral proteins that deregulate the transcription process. One such protein is ks-vFLIP (produced by the Kaposi's sarcoma herpes virus [KSHV]), which associates with IKKgamma, an essential component of the IKK complex or signalosome. This interaction renders the canonical NF-kappaB pathway constitutively active and has been linked to Kaposi's sarcoma and other malignancies. In order to elucidate the molecular basis underpinning ks-vFLIP-induced activation of the IKK signalosome, we have determined the crystal structure of a complex involving a fragment of IKKgamma bound to ks-vFLIP at 3.2 A. In addition to identifying and subsequently probing the ks-vFLIP-IKKgamma interface, we have also investigated the effects of a mutation implicated in the genetic disorder anhydrotic ectodermal dysplasia with immunodeficiency (EDA-ID).

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Primary Citation of related structures