Biological Assembly 1  

 3D View: Structure | Electron Density

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 57977.92 
• Atom Count: 3998 
• Residue Count: 506 
• Unique protein chains: 1

2D1L

Structure of F-actin binding domain IMD of MIM (Missing In Metastasis)

• DOI: 10.2210/pdb2D1L/pdb

• Classification: PROTEIN BINDING
• Organism(s): Mus musculus
• Expression System: Escherichia coli BL21


• Deposited: 2005-08-27 Released: 2006-09-12 
• Deposition Author(s): Lee, S.H., Kerff, F., Chereau, D., Ferron, F., Dominguez, R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.228 
• R-Value Work: 0.183 

Literature

Structural basis for the actin-binding function of missing-in-metastasis

Lee, S.H., Kerff, F., Chereau, D., Ferron, F., Klug, A., Dominguez, R.

(2007) Structure 15: 145-155

• PubMed: 17292833 
• DOI: 10.1016/j.str.2006.12.005
• Primary Citation of Related Structures:  
  2D1K


• PubMed Abstract: 
  

The adaptor protein missing-in-metastasis (MIM) contains independent F- and G-actin binding domains, consisting, respectively, of an N-terminal 250 aa IRSp53/MIM homology domain (IMD) and a C-terminal WASP-homology domain 2 (WH2). We determined the crystal structures of MIM's IMD and that of its WH2 bound to actin. The IMD forms a dimer, with each subunit folded as an antiparallel three-helix bundle. This fold is related to that of the BAR domain. Like the BAR domain, the IMD has been implicated in membrane binding. Yet, comparison of the structures reveals that the membrane binding surfaces of the two domains have opposite curvatures, which may determine the type of curvature of the interacting membrane. The WH2 of MIM is longer than the prototypical WH2, interacting with all four subdomains of actin. We characterize a similar WH2 at the C terminus of IRSp53 and propose that in these two proteins WH2 performs a scaffolding function.

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Organizational Affiliation: 

Department of Physiology, University of Pennsylvania School of Medicine, 3700 Hamilton Walk, Philadelphia, PA 19104, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Metastasis suppressor protein 1	A, B	253	Mus musculus	Mutation(s): 0  Gene Names: Mtss1 (Mim)
Find proteins for Q8R1S4 (Mus musculus) Go to UniProtKB:  Q8R1S4

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.228 
• R-Value Work: 0.183 
• Space Group: P 1 2₁ 1

Unit Cell:

Length (Å)	Angle (°)
a = 53.503	α = 90.00
b = 37.319	β = 94.07
c = 129.016	γ = 90.00

Software Package:

Software Name	Purpose
DM	phasing
SnB	phasing
SCALEPACK	data scaling
REFMAC	refinement
HKL-2000	data reduction
SOLVE	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2005-08-27 
• Released Date: 2006-09-12 
• Deposition Author(s): Lee, S.H., Kerff, F., Chereau, D., Ferron, F., Dominguez, R.

Revision History 

• Version 1.0: 2006-09-12
  Type: Initial release
• Version 1.1: 2008-04-30
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Advisory, Version format compliance
• Version 1.3: 2017-10-11
  Type: Refinement description