| Description | This entry represents a region that spans the WD-40 repeats in members of the WD repeat G protein beta family.WD-40 repeats (also known as WD or beta-transducin repeats) are short ~40 amino acid motifs, often terminating in a Trp-Asp (W-D) dipeptide. WD40 repeats usually assume a 7-8 bladed β-propeller fold, but proteins have been found with 4 to 16 repeated units, which also form a circularised β-propeller structure. WD-repeat proteins are a large family found in all eukaryotes and are implicated in a variety of functions ranging from signal transduction and transcription regulation to cell cycle control and apoptosis. Repeated WD40 motifs act as a site for protein-protein or protein-DNA interaction, and proteins containing WD40 repeats are known to serve as platforms for the assembly of protein complexes or mediators of transient interplay among other proteins [ ]. The specificity of the proteins is determined by the sequences outside the repeats themselves. Examples of such complexes are G proteins (beta subunit is a β-propeller), TAFII transcription factor, and E3 ubiquitin ligase [, ]. In Arabidopsis spp., several WD40-containing proteins act as key regulators of plant-specific developmental events. | Name | G-protein beta WD-40 repeat |
| Short Name | G-protein_beta_WD-40_rep | Type | Repeat |
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