External Ids for TCTN1 Gene
This gene encodes a member of the tectonic family of secreted and transmembrane proteins. The orthologous gene in mouse is required for formation of most ventral cell types. It functions downstream of smoothened and rab23 to modulate hedgehog signal transduction. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
GeneCards Summary for TCTN1 Gene
TCTN1 (Tectonic Family Member 1) is a Protein Coding gene. Diseases associated with TCTN1 include joubert syndrome 13 and joubert syndrome and related disorders. An important paralog of this gene is TCTN3.
UniProtKB/Swiss-Prot for TCTN1 Gene
Component of the tectonic-like complex, a complex localized at the transition zone of primary cilia and acting as a barrier that prevents diffusion of transmembrane proteins between the cilia and plasma membranes. Regulator of Hedgehog (Hh), required for both activation and inhibition of the Hh pathway in the patterning of the neural tube. During neural tube development, it is required for formation of the most ventral cell types and for full Hh pathway activation. Functions in Hh signal transduction to fully activate the pathway in the presence of high Hh levels and to repress the pathway in the absence of Hh signals. Modulates Hh signal transduction downstream of SMO and RAB23 (By similarity).