As a component of the IFT complex A (IFT-A), a complex required for retrograde ciliary transport and entry into cilia of G protein-coupled receptors (GPCRs), it is involved in ciliogenesis and ciliary protein trafficking (PubMed:21473986, PubMed:28400947, PubMed:29220510). May promote CASP3 activation and TNF-stimulated apoptosis. Component of the IFT complex A (IFT-A) complex (PubMed:20889716, PubMed:27932497, PubMed:29220510). IFT-A complex is divided into a core subcomplex composed of IFT122:IFT140:WDR19 which is associated with TULP3 and a peripheral subcomplex composed of IFT43:WDR35:TTC21B (PubMed:27932497, PubMed:29220510). Interacts directy with IFT122, ITF43 and TTC21B (PubMed:29220510, PubMed:27932497). Interacts with IFT43 (PubMed:19450523). By TNF. 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. WDR35 mutations cause short rib-polydactyly syndrome through impaired cilia formation. Primary fibroblasts from SRTD7 patients lacking WDR35 fail to produce cilia (PubMed:21473986). 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. Extended N-terminus.