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PRG2 / Proteoglycan 2 is the predominant constituent of the crystalline core of the eosinophil granule. High levels of the proform of this protein are also present in placenta and pregnancy serum, where it exists as a complex with several other proteins including pregnancy-associated plasma protein A (PAPPA), angiotensinogen (AGT), and C3dg. This protein may be involved in antiparasitic defense mechanisms as a cytotoxin and helminthotoxin, and in immune hypersensitivity reactions. The encoded protein contains a peptide that displays potent antimicrobial activity against Gram-positive bacteria, Gram-negative bacteria, and fungi. It is directly implicated in epithelial cell damage, exfoliation, and bronchospasm in allergic diseases. Alternatively spliced transcript variants encoding different isoforms have been found for this gene.
Gene Name: | proteoglycan 2, bone marrow (natural killer cell activator, eosinophil granule major basic protein) |
Synonyms: | PRG2, BMPG, Bone marrow proteoglycan, Bone-marrow proteoglycan, Eosinophil major basic protein, MBP1, Natural killer cell activator, Proteoglycan 2, Proteoglycan 2 preproprotein |
Target Sequences: | NM_002728 NP_002719.3 P13727 |
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