Figure 4. The UBR box protein family.
(A) A schematic diagram of UBR box proteins. UBR, UBR box; RING, RING finger; CRD, cysteine rich domain; HECT, HECT domain; PHD, plant homeodomain finger; UAIN, UBR-specific autoinhibitory domain.
(B) A sequence alignment of the UBR boxes from four species. Shown are the ∼70 amino acid regions where conserved Cys and His residues are highlighted (cyan). m, Mus musculus; d, D. melanogaster; a, A. thaliana; sc, S. cerevisiae.