title: RABIF
text: # RABIF
  
  Guanine nucleotide exchange factor MSS4 is a protein that in humans is encoded by the RABIF gene.
  
  ## Function
  
  The Sec4/Rab-related small GTP-binding proteins are involved in the regulation of intracellular vesicular transport. Mss4 stimulates GTP-GDP exchange in Sec4 and Rab and binds to a subset of genetically related Rab proteins.
  
  