proMMP9 Mouse ELISA (Enzyme-Linked Immunosorbent Assay) kit (ab100732) is an in vitro enzyme-linked immunosorbent assay for the quantitative measurement of Mouse proMMP9 in serum, plasma and cell culture supernatants.
This assay employs an antibody specific for mouse proMMP9 coated on a 96-well plate. Standards and samples are pipetted into the wells and proMMP9 present in a sample is bound to the wells by the immobilized antibody. The wells are washed and biotinylated anti-mouse proMMP9 antibody is added. After washing away unbound biotinylated antibody, HRP-conjugated streptavidin is pipetted to the wells. The wells are again washed, a TMB substrate solution is added to the wells and color develops in proportion to the amount of proMMP9 bound. The Stop Solution changes the color from blue to yellow, and the intensity of the color is measured at 450 nm.
FunctionMay play an essential role in local proteolysis of the extracellular matrix and in leukocyte migration. Could play a role in bone osteoclastic resorption. Cleaves KiSS1 at a Gly- -Leu bond. Cleaves type IV and type V collagen into large C-terminal three quarter fragments and shorter N-terminal one quarter fragments. Degrades fibronectin but not laminin or Pz-peptide.
Tissue specificityProduced by normal alveolar macrophages and granulocytes.
Involvement in diseaseIntervertebral disc disease Metaphyseal anadysplasia 2
Sequence similaritiesBelongs to the peptidase M10A family. Contains 3 fibronectin type-II domains. Contains 4 hemopexin repeats.
DomainThe conserved cysteine present in the cysteine-switch motif binds the catalytic zinc ion, thus inhibiting the enzyme. The dissociation of the cysteine from the zinc ion upon the activation-peptide release activates the enzyme.
Post-translational modificationsProcessing of the precursor yields different active forms of 64, 67 and 82 kDa. Sequentially processing by MMP3 yields the 82 kDa matrix metalloproteinase-9. N- and O-glycosylated.