TTLL11

tubulin tyrosine ligase like 11

Tier: Gold Standard Ciliary Genes

Ensembl:
ENSG00000175764
UniProt:
Q8NHH1
OMIM:
620694
Synonyms:
BA244O19.1, C9ORF148, C9ORF20, TTLL11-IT1

Cilia effects upon perturbation of TTLL11

Cilia number / % ciliated:
Decreased cilia number
Loss-of-function effect:
Shorter cilia

Ciliogenesis screen results (2 screens)

  • Wheway et al. 2015 (siRNA) [siRNA]: No effect PMID:26167766
  • Breslow et al. 2018 (CRISPR) [CRISPR]: No Significant Effect PMID:29459680

Phenotypes

Mouse phenotype:
abnormal spleen morphology, abnormal skin morphology
Human ciliopathy phenotype:
adolescent idiopathic scoliosis (spine)

Ciliopathy associations

  • Adolescent Idiopathic Scoliosis

References: PMID:34040021

Subcellular localization

basal body

References: PMID:34040021

Functional category

  • Ciliary assembly/disassembly
  • Actin & cytoskeleton regulation

Function

A rare TTLL11 insertion (c.1569_1570insTT) causes idiopathic scoliosis in a five-generation UK family. Patient cells have fewer, shorter and less polyglutamylated primary cilia, and ttll11 knockdown in zebrafish affects spine development and ciliary function in the retina (PMID 34040021).