Component of the outer dynein arm-docking complex (ODA-DC) that mediates outer dynein arms (ODA) binding onto the doublet microtubule. Plays an essential role for the assembly of ODA-DC and for the docking of ODA in ciliary axoneme. Component of the outer dynein arm-docking complex along with ODAD1, ODAD2 and ODAD3. Interacts with ODAD1; this interaction may facilitate the recruitment and/or attachment of outer dynein arm docking complex proteins, including ODAD1, ODAD3 and ODAD2, to ciliary axonemes (PubMed:27486780). Interacts with components of the IFT complex A, including IFT140, TTC21B/IFT139 and WDR19/IFT144, and the IFT complex B, including IFT46, IFT52 and IFT57 (PubMed:25860617). Expressed in the nasal mucosa (at protein level). The disease is caused by variants affecting the gene represented in this entry.