CCDC88A

coiled-coil domain containing 88A

Ensembl:
ENSG00000115355
UniProt:
Q3V6T2
OMIM:
609736
Synonyms:
APE, FLJ10392, GIV, GRDN, HKRP1

Cilia effects upon perturbation of CCDC88A

Ciliogenesis screen results (3 screens)

  • Wheway et al. 2015 (siRNA) [siRNA]: No effect PMID:26167766
  • Breslow et al. 2018 (CRISPR) [CRISPR]: No Significant Effect PMID:29459680
  • Elliott et al. 2025 (CRISPRa) [CRISPRa]: Disassembly Trigger (casTLE Effect=-2.98) PMID:41160700

Subcellular localization

basal body, cytosol, endosome

Functional category

  • Ciliary assembly/disassembly
  • Trafficking (BBSome, small GTPases, vesicular transport, ATPases)
  • Actin & cytoskeleton regulation
  • Protein processing & maturation
  • Signaling (Hedgehog, GPCRs, ion channels)

Function

Conserved sig ling 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(27623382).

Model organism evidence

C. elegans (2 references)

GRDN-1 is localized to the basal body and regulates localization of HMR-1/Cadherin to the distal AQR dendrite.

A Conserved Role for Girdin in Basal Body Positioning and Ciliogenesis.

PMIDs: 33460640, 27623382