Macromolecule Content

• Total Structure Weight: 18.26 kDa 
• Atom Count: 1288 
• Residue Count: 162 
• Unique protein chains: 1

1WSX

Solution structure of MCL-1

• DOI: 10.2210/pdb1WSX/pdb

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


• Deposited: 2004-11-12 Released: 2004-11-23 
• Deposition Author(s): Day, C.L., Chen, L., Richardson, S.J., Harrison, P.J., Huang, D.C., Hinds, M.G.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 256 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy, structures with the least restraint violations, structures with acceptable covalent geometry 

Literature

Solution Structure of Prosurvival Mcl-1 and Characterization of Its Binding by Proapoptotic BH3-only Ligands

Day, C.L., Chen, L., Richardson, S.J., Harrison, P.J., Huang, D.C., Hinds, M.G.

(2005) J Biol Chem 280: 4738-4744

• PubMed: 15550399 
• DOI: 10.1074/jbc.M411434200
• Primary Citation of Related Structures:  
  1WSX


• PubMed Abstract: 
  

The B cell lymphoma-2 (Bcl-2) homologs myeloid cell leukemia-1 (Mcl-1) and A1 are prosurvival factors that selectively bind a subset of proapoptotic Bcl homology (BH) 3-only proteins. To investigate the molecular basis of the selectivity, we determined the solution structure of the C-terminal Bcl-2-like domain of Mcl-1. This domain shares features expected of a prosurvival Bcl-2 protein, having a helical fold centered on a core hydrophobic helix and a surface-exposed hydrophobic groove for binding its cognate partners. A number of residues in the binding groove differentiate Mcl-1 from its homologs, and in contrast to other Bcl-2 homologs, Mcl-1 has a binding groove in a conformation intermediate between the open structures characterized by peptide complexes and the closed state observed in unliganded structures. Mutagenesis of potential binding site residues was used to probe the contributions of groove residues to the binding properties of Mcl-1. Although mutations in Mcl-1 had little impact on binding, a single mutation in the BH3-only ligand Bad enabled it to bind both Mcl-1 and A1 while retaining its binding to Bcl-2, Bcl-xL, and Bcl-w. Elucidating the selective action of certain BH3-only ligands is required for delineating their mode of action and will aid the search for effective BH3-mimetic drugs.

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Organizational Affiliation: 

Department of Biochemistry, University of Otago, Dunedin 9001, New Zealand.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
myeloid cell leukemia sequence 1	A	162	Mus musculus	Mutation(s): 0  Gene Names: mcl-1, Mcl1
Find proteins for P97287 (Mus musculus) Explore P97287  Go to UniProtKB:  P97287
NIH Common Fund Data Resources
IMPC  MGI:101769

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 256 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy, structures with the least restraint violations, structures with acceptable covalent geometry 
• OLDERADO: 1WSX Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2004-11-12 
• Released Date: 2004-11-23 
Deposition Author(s): Day, C.L., Chen, L., Richardson, S.J., Harrison, P.J., Huang, D.C., Hinds, M.G.

Revision History 

• Version 1.0: 2004-11-23
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance