The function of ENSG00000133393 (CEP20, centrosomal protein 20) is as follows. Involved in the biogenesis of cilia (PubMed:20551181). Required for the recruitment of PLK1 to centrosomes and S phase progression (PubMed:24018379). {ECO:0000269|PubMed:20551181, ECO:0000269|PubMed:24018379}.