| Modification Notes |
WD-repeats are motifs that are found in a variety of proteins and are characterized by a conserved core of 40-60 amino acids that commonly form a tertiary propeller structure. While proteins that contain WD-repeats participate in a wide range of cellular functions, they are generally involved in regulatory mechanisms concerning chromatin assembly, cell cycle control, signal transduction, RNA processing, apoptosis and vesicular trafficking. WDR21A (WD repeat-containing protein 21A), also known as DCAF4 (DDB1 and CUL-4 associated factor 4) or WDR21, is a 495 amino acid protein that contains two WD repeats and may function as a substrate receptor for the CUL-4-DDB1 E3 ubiquitin-protein ligase complex. WRD21A is suggested to participate in protein modification and ubiquitination. WDR21A exists as two alternatively spliced isoforms and is encoded by a gene that maps to human chromosome 14q24.2. |