DRC1 is a key component of the nexin-dynein regulatory complex (N-DRC), essential for N-DRC integrity. It is required for the assembly and regulation of specific classes of inner dynein arm motors. It may also function to restrict dynein-driven microtubule sliding, thus aiding in the generation of ciliary bending []. Mutations of DRC1 gene cause Ciliary dyskinesia, primary, 21 (CILD21), which is a disorder characterised by abnormalities of motile cilia []. DRC2, also known as CCDC65, is an essential component of the nexin-dynein regulatory complex (N-DRC)[]. DRC2 is necessary for the co-assembly of DRC2 and DRC1 to form the base plate of N-DRC.
