Tes, a specific Mena interacting partner, breaks the rules for EVH1 binding

Mol Cell. 2007 Dec 28;28(6):1071-82. doi: 10.1016/j.molcel.2007.10.033.

Abstract

The intracellular targeting of Ena/VASP family members is achieved via the interaction of their EVH1 domain with FPPPP sequence motifs found in a variety of cytoskeletal proteins, including lamellipodin, vinculin, and zyxin. Here we show that the LIM3 domain of Tes, which lacks the FPPPP motif, binds to the EVH1 domain of Mena, but not to those of VASP or Evl. The structure of the LIM3:EVH1 complex reveals that Tes occludes the FPPPP-binding site and competes with FPPPP-containing proteins for EVH1 binding. Structure-based gain-of-function experiments define the molecular basis for the specificity of the Tes-Mena interaction. Consistent with in vitro observations, the LIM3 domain displaces Mena, but not VASP, from the leading edge and focal adhesions. It also regulates cell migration through a Mena-dependent mechanism. Our observations identify Tes as an atypical EVH1 binding partner and a regulator specific to a single Ena/VASP family member.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • 3T3 Cells
  • Amino Acid Sequence
  • Animals
  • Binding Sites / genetics
  • Cell Line
  • Cell Movement / genetics
  • Cell Movement / physiology
  • Cytoplasm / metabolism
  • Cytoskeletal Proteins
  • Green Fluorescent Proteins / genetics
  • Green Fluorescent Proteins / metabolism
  • HeLa Cells
  • Homeodomain Proteins / chemistry
  • Homeodomain Proteins / genetics
  • Homeodomain Proteins / metabolism*
  • Humans
  • Immunoblotting
  • LIM Domain Proteins
  • Mice
  • Microfilament Proteins / chemistry
  • Microfilament Proteins / genetics
  • Microfilament Proteins / metabolism*
  • Microscopy, Fluorescence
  • Models, Molecular
  • Molecular Sequence Data
  • Protein Binding
  • Protein Structure, Tertiary
  • Recombinant Fusion Proteins / genetics
  • Recombinant Fusion Proteins / metabolism
  • Sequence Homology, Amino Acid
  • Tumor Suppressor Proteins / chemistry
  • Tumor Suppressor Proteins / genetics
  • Tumor Suppressor Proteins / metabolism*

Substances

  • Cytoskeletal Proteins
  • Enah protein, human
  • Homeodomain Proteins
  • LIM Domain Proteins
  • Microfilament Proteins
  • Recombinant Fusion Proteins
  • TES protein, human
  • Tumor Suppressor Proteins
  • Green Fluorescent Proteins