A Conserved Role for Girdin in Basal Body Positioning and Ciliogenesis

Dev Cell. 2016 Sep 12;38(5):493-506. doi: 10.1016/j.devcel.2016.07.013.


Primary cilia are ubiquitous sensory organelles that mediate diverse signaling pathways. Cilia position on the cell surface is determined by the location of the basal body (BB) that templates the cilium. The mechanisms that regulate BB positioning in the context of ciliogenesis are largely unknown. Here we show that the conserved signaling and scaffolding protein Girdin localizes to the proximal regions of centrioles and regulates BB positioning and ciliogenesis in Caenorhabditis elegans sensory neurons and human RPE-1 cells. Girdin depletion alters localization of the intercentriolar linker and ciliary rootlet component rootletin, and rootletin knockdown in RPE-1 cells mimics Girdin-dependent phenotypes. C. elegans Girdin also regulates localization of the apical junction component AJM-1, suggesting that in nematodes Girdin may position BBs via rootletin- and AJM-1-dependent anchoring to the cytoskeleton and plasma membrane, respectively. Together, our results describe a conserved role for Girdin in BB positioning and ciliogenesis.

Publication types

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

MeSH terms

  • Animals
  • Basal Bodies / metabolism
  • Caenorhabditis elegans / genetics
  • Caenorhabditis elegans / growth & development
  • Caenorhabditis elegans Proteins / biosynthesis
  • Caenorhabditis elegans Proteins / genetics*
  • Centrioles / genetics
  • Cilia / genetics
  • Cilia / metabolism*
  • Cytoskeletal Proteins / genetics*
  • Cytoskeleton / genetics
  • Humans
  • Microfilament Proteins / biosynthesis
  • Microfilament Proteins / genetics*
  • Microtubules / genetics
  • Morphogenesis / genetics*
  • Organelles / genetics
  • Sensory Receptor Cells / metabolism
  • Signal Transduction / genetics
  • Vesicular Transport Proteins / biosynthesis
  • Vesicular Transport Proteins / genetics*


  • AJM-1 protein, C elegans
  • CCDC88A protein, human
  • CROCC protein, human
  • Caenorhabditis elegans Proteins
  • Cytoskeletal Proteins
  • Microfilament Proteins
  • Vesicular Transport Proteins