The survival motor neuron protein interacts with the transactivator FUSE binding protein from human fetal brain

FEBS Lett. 2000 Mar 24;470(2):207-10. doi: 10.1016/s0014-5793(00)01320-x.


To identify interacting proteins of survival motor neuron (SMN) in neurons, a fetal human brain cDNA library was screened using the yeast two-hybrid system. One identified group of SMN interacting clones encoded the DNA transactivator FUSE binding protein (FBP). FBP overexpressed in HEK293 cells or endogenously expressed in fetal and adult mouse brain bound specifically in vitro to recombinant SMN protein. Furthermore, an anti-FBP antibody specifically co-immunoprecipitated SMN when both proteins were overexpressed in HEK293 cells. These results demonstrate that FBP is a novel interacting partner of SMN and suggests a possible role for SMN in neuronal gene expression.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aging
  • Animals
  • Brain / embryology*
  • Brain / metabolism*
  • Cell Line
  • Cloning, Molecular
  • Cyclic AMP Response Element-Binding Protein
  • DNA Helicases
  • DNA-Binding Proteins / chemistry
  • DNA-Binding Proteins / genetics
  • DNA-Binding Proteins / isolation & purification
  • DNA-Binding Proteins / metabolism*
  • Humans
  • Mice
  • Molecular Weight
  • Muscular Atrophy, Spinal / genetics
  • Nerve Tissue Proteins / chemistry
  • Nerve Tissue Proteins / genetics
  • Nerve Tissue Proteins / isolation & purification
  • Nerve Tissue Proteins / metabolism*
  • Precipitin Tests
  • Protein Binding
  • RNA-Binding Proteins
  • Recombinant Fusion Proteins / chemistry
  • Recombinant Fusion Proteins / genetics
  • Recombinant Fusion Proteins / isolation & purification
  • Recombinant Fusion Proteins / metabolism
  • SMN Complex Proteins
  • Transfection
  • Two-Hybrid System Techniques


  • Cyclic AMP Response Element-Binding Protein
  • DNA-Binding Proteins
  • FUBP1 protein, human
  • Fubp protein, mouse
  • Nerve Tissue Proteins
  • RNA-Binding Proteins
  • Recombinant Fusion Proteins
  • SMN Complex Proteins
  • DNA Helicases