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Type III Pyridoxal 5-phosphate (PLP)-Dependent Enzyme Ornithine Decarboxylase-like Antizyme Inhibitor. Antizyme inhibitor (AZI) is homologous to the fold type III PLP-dependent enzyme ODC but does not retain any decarboxylase activity. Like ODC, AZI is presumed to exist as a homodimer. Antizyme is a regulatory protein that binds directly to the ODC monomer to block its active site, leading to its degradation by the 26S proteasome. AZI binds to Antizyme with a higher affinity than ODC, preventing the formation of the Antizyme-ODC complex. Thus, AZI blocks the ability of Antizyme to promote ODC degradation, which leads to increased ODC enzymatic activity and polyamine levels. AZI also prevents the degradation of other proteins regulated by Antizyme, such as cyclin D1.
No pairwise interactions are available for this conserved domain.
Tips:  If you've navigated here from a protein, hovering over a position on the weblogo will display the corresponding protein position for that domain position. The histograms below the weblogo indicate mutations found on the domain. Red is for disease (OMIM) and blue is for SNPs. Functional Features are displayed as orange boxes under the histograms. You can choose which features are displayed in the box below. Range on the Protein: Protein ID Protein Position Domain Position: 
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