Which is the molecular function of the protein CCDC40?
['Primary ciliary dyskinesia (PCD) is a genetically heterogeneous, autosomal recessive disorder that results from functional and ultrastructural abnormalities of motile cilia.', 'Primary ciliary dyskinesia (PCD) is a rare genetic disorder leading to recurrent respiratory tract infections.', 'Ciliary beat pattern and frequency in genetic variants of primary ciliary dyskinesia.', 'Mutations in CCDC39 and CCDC40 are the major cause of primary ciliary dyskinesia with axonemal disorganization and absent inner dynein arms.', 'Human cilia were once thought merely to be important in respiratory mucociliary clearance, with primary ciliary dyskinesia (PCD) the sole manifestation of ciliary dysfunction. ', 'The coiled-coil domain containing protein CCDC40 is essential for motile cilia function and left-right axis formation.', 'CCDC39 and CCDC40 mutations represent the major cause of PCD with IDA defects and axonemal disorganisation.']
['The coiled-coil domain containing protein CCDC40 is essential for motile cilia function and left-right axis formation and mutations in CCDC39 and CCDC40 are the major cause of primary ciliary dyskinesia with axonemal disorganization and absent inner dynein arms.']
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