Biological Assembly 1  

 3D View: Structure

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 23.67 kDa 
• Atom Count: 1668 
• Modelled Residue Count: 212 
• Deposited Residue Count: 212 
• Unique protein chains: 1

2ME9

Solution structure of BCL-xL containing the alpha1-alpha2 disordered loop determined with selective isotope labelling of I,L,V sidechains

• DOI: 10.2210/pdb2ME9/pdb
• BMRB: 19521

• Classification: APOPTOSIS
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2013-09-25 Released: 2014-04-30 
• Deposition Author(s): Viacava Follis, A., Grace, C.R., Kriwacki, R.W.

---

Experimental Data Snapshot

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

Literature

The DNA-binding domain mediates both nuclear and cytosolic functions of p53.

Follis, A.V., Llambi, F., Ou, L., Baran, K., Green, D.R., Kriwacki, R.W.

(2014) Nat Struct Mol Biol 21: 535-543

• PubMed: 24814347 
• DOI: 10.1038/nsmb.2829
• Primary Citation of Related Structures:  
  2ME9, 2ME8, 2MEJ


• PubMed Abstract: 
  

Under conditions of genotoxic stress, human p53 activates the apoptotic effectors BAX or BAK to result in mitochondrial outer-membrane permeabilization and apoptosis. Antiapoptotic BCL-2 family member BCL-xL opposes this activity by sequestering cytosolic p53 via association with its DNA-binding domain, an interaction enhanced by p53 tetramerization. Here we characterized the BCL-xL-p53 complex by NMR spectroscopy and modulated it through mutagenesis to determine the relative contributions of BCL-xL's interactions with p53 or other BCL-2 family proteins to the BCL-xL-dependent inhibition of UV irradiation-induced apoptosis. Under our experimental conditions, one-third of the antiapoptotic activity of BCL-xL was mediated by p53 sequestration and the remaining two-thirds through sequestration of proapoptotic BCL-2 family members. Our studies define the contributions of cytosolic p53 to UV irradiation-induced apoptosis and provide opportunities to explore its contributions to other p53-dependent apoptotic signaling pathways.

---

Organizational Affiliation: 

1] Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA. [2] Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Sciences Center, Memphis, Tennessee, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Bcl-2-like protein 1	A	212	Homo sapiens	Mutation(s): 0  Gene Names: BCL2L1, BCL2L, BCLX
Find proteins for Q07817 (Homo sapiens) Explore Q07817  Go to UniProtKB:  Q07817
NIH Common Fund Data Resources
PHAROS:  Q07817 GTEx:  ENSG00000171552

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 
• OLDERADO: 2ME9 Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2013-09-25 
• Released Date: 2014-04-30 
Deposition Author(s): Viacava Follis, A., Grace, C.R., Kriwacki, R.W.

Revision History  

• Version 1.0: 2014-04-30
  Type: Initial release
  
• Version 1.1: 2014-07-09
  Changes: Database references