Human MMP-19 Antibody Summary
Accession # Q99542
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Detection of Human MMP-19 by Western Blot. Western blot shows lysates of HeLa human cervical epithelial carcinoma cell line and human small intestine tissue. PVDF membrane was probed with 1 µg/mL of Goat Anti-Human MMP-19 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF6790) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF019). Specific bands were detected for MMP-19 at approximately 57 and 50 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
MMP-19 in Human Melanoma. MMP-19 was detected in immersion fixed paraffin-embedded sections of human melanoma using Goat Anti-Human MMP-19 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF6790) at 10 µg/mL overnight at 4 °C. Before incubation with the primary antibody, tissue was subjected to heat-induced epitope retrieval using Antigen Retrieval Reagent-Basic (Catalog # CTS013). Tissue was stained using the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS008) and counterstained with hematoxylin (blue). Specific staining was localized to cytoplasm and plasma membranes. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.
Preparation and Storage
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
MMP-19 (Matrix metalloprotease 19; also MMP-18 and MMP RASI) is a 55-59 kDa member of the peptidase M10A family of enzymes. It is widely expressed, being secreted by stratum basale keratinocytes, smooth muscle cells, epiphysial cartilage chondrocytes and monocytes/macrophages. MMP-19 has multiple substrates, including components of the basement membrane (type IV collagen; laminin; nidogen), fibronectin, aggrecan plus COMP, and IGFBP3, this latter cleavage resulting in the release of active IGF-I. Studies involving MMP-19 demonstrate an antiangiogenic function. This is attributable to the processing of plasminogen, generating angiostatin-like molecules, and the creation of an environment that promotes the ECM retention of soluble VEGF. Human proMMP-19 is 490 amino acids (aa) in length. It contains an autocleavable 9 kDa propeptide (aa 19-97) plus a 411 aa mature region (aa 98-508). The mature region contains a Zn catalytic region (aa 103-256) plus four hemopexin-like domains (aa 293-508). There are three additional potential isoforms. One shows an 88 aa substitution for aa 300-508, a second contains a 12 aa substitution for aa 1-298, while a third possesses an alternative start site at Met80. Over aa 229-508, human MMP-19 shares 76% aa identity with mouse MMP-19.
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in comparison: Animal models have become increasingly useful to examine the potential of MMP inhibitors to suppress aneurysm development and growth in vivo