MMP13 Inhibitor Screening Assay Kit (Colorimetric) (ab139450)
Key features and details
- Assay type: Enzyme activity
- Detection method: Colorimetric
- Platform: Microplate reader
- Sample type: Inhibitor compounds
Overview
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Product name
MMP13 Inhibitor Screening Assay Kit (Colorimetric)
See all MMP13 kits -
Detection method
Colorimetric -
Sample type
Inhibitor compounds -
Assay type
Enzyme activity -
Product overview
Abcam MMP13 Inhibitor Screening Assay Kit (Colorimetric) (ab139450) is a complete assay system designed to screen MMP13 inhibitors using a thiopeptide as a chromogenic substrate (Ac-PLG-[2-mercapto-4-methyl-pentanoyl]-LG-OC2H5). The MMP cleavage site peptide bond is replaced by a thioester bond in the thiopeptide. Hydrolysis of this bond by an MMP produces a sulfhydryl group, which reacts with DTNB [5,5’-dithiobis(2-nitrobenzoic acid), Ellman’s reagent] to form 2-nitro-5-thiobenzoic acid, which can be detected by its absorbance at 412 nm (ε=13,600 M-1 cm-1 at pH 6.0 and above). The assays are performed in a convenient 96-well microplate format.
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Notes
This kit is useful to screen inhibitors of MMP13, a potential therapeutic target. The MMP inhibitor NNGH is also included as a prototypic control inhibitor.
Thiol inhibitors should not be used with this kit, as they may interfere with the colorimetric assay.
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Platform
Microplate reader
Properties
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Storage instructions
Please refer to protocols. -
Components 1 x 96 tests 96-well Clear Microplate 1/2 Volume 1 unit Colorimetric Assay Buffer 1 x 20ml MMP Inhibitor 1 x 50µl MMP Substrate 1 x 50µl MMP13 Enzyme (Human, Recombinant) 1 x 53µl -
Research areas
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Function
Degrades collagen type I. Does not act on gelatin or casein. Could have a role in tumoral process. -
Tissue specificity
Seems to be specific to breast carcinomas. -
Involvement in disease
Defects in MMP13 are the cause of spondyloepimetaphyseal dysplasia Missouri type (SEMD-MO) [MIM:602111]. A bone disease characterized by moderate to severe metaphyseal changes, mild epiphyseal involvement, rhizomelic shortening of the lower limbs with bowing of the femora and/or tibiae, coxa vara, genu varum and pear-shaped vertebrae in childhood. Epimetaphyseal changes improve with age.
Defects in MMP13 are the cause of metaphyseal anadysplasia type 1 (MANDP1) [MIM:602111]. Metaphyseal anadysplasia consists of an abnormal bone development characterized by severe skeletal changes that, in contrast with the progressive course of most other skeletal dysplasias, resolve spontaneously with age. Clinical characteristics are evident from the first months of life and include slight shortness of stature and a mild varus deformity of the legs. Patients attain a normal stature in adolescence and show improvement or complete resolution of varus deformity of the legs and rhizomelic micromelia. -
Sequence similarities
Belongs to the peptidase M10A family.
Contains 4 hemopexin-like domains. -
Domain
The 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. -
Cellular localization
Secreted > extracellular space > extracellular matrix. - Information by UniProt
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Alternative names
- CLG 3
- CLG3
- Collagenase 3
see all
Images
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Plot of OD vs. time.
Slope=V=7.00E-03 OD/min
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Inhibition of MMP13 by NNGHcontrol slope = 7.00E-03 OD/min
inhibitor (100nM) slope = 4.50E-04 OD/min
inhibitor % activity remaining = (4.50E-04 / 7.00E-03) x 100 = 6.4%
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Inhibition of MMP13 by NNGH -
Example graph for Km and Vmax determination
