Rab17 and rab18, small GTPases with specificity for polarized epithelial cells: genetic mapping in the mouse

Genomics. 1997 Nov 1;45(3):623-5. doi: 10.1006/geno.1997.4959.


The Rab subfamily of small GTPases plays an important role in the regulation of membrane traffic in eukaryotic cells. While most Rab proteins are equally expressed in polarized and nonpolarized cells, Rab17 and Rab18 show epithelial cell specificity. Here we report the genetic mapping of Rab17 and Rab18 on mouse chromosomes 1 and 18, respectively. We also discuss some implications of Rab17 and Rab18 mapping, including their candidacy for the mouse mutations ln (leaden), Tw (twirler), and ax (ataxia).

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Cell Polarity / physiology
  • Chromosome Mapping*
  • Chromosomes, Human
  • GTP Phosphohydrolases / genetics*
  • GTP-Binding Proteins / genetics*
  • Humans
  • Mice
  • Mice, Inbred C57BL
  • Mice, Inbred Strains
  • Mutation
  • rab GTP-Binding Proteins*


  • RAB18 protein, human
  • Rab18 protein, mouse
  • rab17 protein, epithelial
  • GTP Phosphohydrolases
  • GTP-Binding Proteins
  • rab GTP-Binding Proteins