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MMP8A gene on chromosome 11q22.3 that encodes matrix metalloproteinase 8, which degrades fibrillar type I, II and III collagens. It is involved in breaking down extracellular the matrix in physiological processes—e.g., embryonic development, reproduction, tissue remodelling and wound healing. It differs from most MMP family members in that it is stored in secondary granules within neutrophils and activated by autolytic cleavage.
Defects in MMP8 have been linked to arthritis and metastasis.