TCTN1 Proteins and Enzymes

TCTN1 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. Transcript Variant: This variant (3) uses an alternate exon combination in the central coding region and an alternate in-frame splice site in the 3' coding region, compared to variant 1, resulting in a shorter protein (isoform 3).