Alternative name: Matrix metalloproteinase 9. Gelatinase B. 92 kDa Type IV collagenase. MW: 39 kDa. Purity: ≥95% (SDS-PAGE). Formulation: Liquid. In 50mM TRIS, pH 7.5, containing 1mM calcium chloride, 300mM sodium chloride, 5μM zinc chloride, 0.1% Brij-35 and 15% glycerol. Source: Produced in E. coli. Active recombinant matrix metalloproteinase-9 (MMP-9, gelatinase B, 92 kDa type IV collagenase) cloned from human cDNA. The enzyme consists of residues Phe107-Pro449 (NM_004994), which comprises the catalytic/fibronectin domain of human MMP-9, with a C-terminal purification tag. This represents a naturally-occurring active form of MMP-9 which lacks the C-terminal hemopexin domain. Activity toward its targets, such as gelatin. CASein, or peptide substrates, is unaffected. UniProt: P14780. Handling: Avoid freeze/thaw cycles. After opening, prepare aliquots and store at -80°C. Long Term Storage: -80°C