Complex sentence: Sic1 is targeted for degradation by SCF (Cdc4), which recognizes Sic1 phosphodegron pairs, which are closely positioned paired phosphorylation residues that each have strong affinities for Cdc4.
Split into simpler sentences: Sic1 is targeted for degradation by SCF (Cdc4), which recognizes Sic1 phosphodegron pairs. These phosphodegron pairs are closely positioned paired phosphorylation residues that each have strong affinities for Cdc4.