Plays a key role in ciliogenesis and embryonic development. Regulator of cilia formation by controlling the organization of the apical actin cytoskeleton and the positioning of the basal bodies at the apical cell surface, which in turn is essential for the normal orientation of elongating ciliary microtubules. Plays a key role in definition of cell polarity via its role in ciliogenesis but not via conversion extension. Has an indirect effect on hedgehog signaling (By similarity). Proposed to function as core component of the CPLANE (ciliogenesis and planar polarity effectors) complex involved in the recruitment of peripheral IFT-A proteins to basal bodies (PubMed:27158779). Interacts with CPLANE1. Interacts with FUZ and WDPCP; FUZ, INTU and WDPCP probably form the core CPLANE (ciliogenesis and planar polarity effectors) complex (By similarity). Interacts with NPHP4 and DAAM1; INTU is mediating the interaction between NPHP4 and DAAM1 (PubMed:26644512). Enriched at the apical surface in ciliated cells. The disease is caused by variants affecting the gene represented in this entry. The disease is caused by variants affecting the gene represented in this entry. The disease is caused by variants affecting distinct genetic loci, including the gene represented in this entry. SRTD7/20 can be caused by co-occurrence of WDR35 variant p.Trp311Leu and INTU p.Gln276Ter. One such patient has been reported. May be produced at very low levels due to a premature stop codon in the mRNA, leading to nonsense-mediated mRNA decay. Belongs to the inturned family. Extended N-terminus.