2M5B

The NMR structure of the BID-BAK complex


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 1.2 of the entry. See complete history

Literature

BID-induced structural changes in BAK promote apoptosis.

Moldoveanu, T.Grace, C.R.Llambi, F.Nourse, A.Fitzgerald, P.Gehring, K.Kriwacki, R.W.Green, D.R.

(2013) Nat.Struct.Mol.Biol. 20: 589-597

  • DOI: 10.1038/nsmb.2563

  • PubMed Abstract: 
  • The BCL-2-family protein BAK is responsible for mitochondrial outer-membrane permeabilization (MOMP), which leads to apoptosis. The BCL-2 homology 3 (BH3)-only protein BID activates BAK to perform this function. We report the NMR solution structure o ...

    The BCL-2-family protein BAK is responsible for mitochondrial outer-membrane permeabilization (MOMP), which leads to apoptosis. The BCL-2 homology 3 (BH3)-only protein BID activates BAK to perform this function. We report the NMR solution structure of the human BID BH3-BAK complex, which identified the activation site at the canonical BH3-binding groove of BAK. Mutating the BAK BH1 in the groove prevented activation and MOMP but not the binding of BID. BAK BH3 mutations allowed BID binding and activation but blunted function by blocking BAK oligomerization. BAK activation follows a 'hit-and-run' mechanism whereby BID dissociates from the trigger site, which allows BAK oligomerization at an overlapping interface. In contrast, the BH3-only proteins NOXA and BAD are predicted to clash with the trigger site and are not activators of BAK. These findings provide insights into the early stages of BAK activation.


    Organizational Affiliation

    Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Bcl-2 homologous antagonist/killer
A
169Homo sapiensMutation(s): 0 
Gene Names: BAK1 (BAK, BCL2L7, CDN1)
Find proteins for Q16611 (Homo sapiens)
Go to Gene View: BAK1
Go to UniProtKB:  Q16611
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
human_BID_BH3_SAHB
B
23Homo sapiensMutation(s): 0 
Gene Names: BID
Find proteins for P55957 (Homo sapiens)
Go to Gene View: BID
Go to UniProtKB:  P55957
Small Molecules
Modified Residues  3 Unique
IDChainsTypeFormula2D DiagramParent
NH2
Query on NH2
B
NON-POLYMERH2 N

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NLE
Query on NLE
B
L-PEPTIDE LINKINGC6 H13 N O2LEU
MK8
Query on MK8
B
L-peptide linkingC7 H15 N O2LEU
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 2M5B Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-04-17
    Type: Initial release
  • Version 1.1: 2013-05-08
    Type: Database references
  • Version 1.2: 2013-05-22
    Type: Database references