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Melanoma Inhibitory Activity-Like protein MIAL is specifically expressed in the cochlea and the vestibule of the inner ear and may contribute to inner ear dysfunction in humans. MIAL is a member of the recently identified family that also includes MIA, MIA2, and MIA3 (also called TANGO); MIA is the most studied member of the family. MIA is a single domain protein that adopts a Src Homology 3 (SH3) domain-like fold; it contains an additional antiparallel beta sheet and two disulfide bonds compared to classical SH3 domains. MIA is secreted from malignant melanoma cells and it plays an important role in melanoma development and invasion. MIA is expressed by chondrocytes in normal tissues and may be important in the cartilage cell phenotype. Unlike classical SH3 domains, MIA does not bind proline-rich ligands. |
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