ADAM23 is a non-catalytic metalloprotease-like protein. It is highly expressed in the brain, primarily in the amygdala, caudate nucleus, hypothalamus, thalamus, cerebral cortex and occipital pole, and weakly expressed in the heart. 3 isoforms are produced by alternative splicing, alpha, beta and gamma. ADAM23 may play a role in cell-cell and cell-matrix interactions.