• USA Home
  • MABT171 - Anti-MMP-9 (Active) Antibody, clone 4A3

MABT171 Sigma-Aldrich

Anti-MMP-9 (Active) Antibody, clone 4A3

clone 4A3, from mouse

Synonym: Matrix metalloproteinase-9, MMP-9, 92 kDa gelatinase, 92 kDa type IV collagenase, Gelatinase B, GELB

  •  eCl@ss 32160702

  •  NACRES NA.41



Related Categories Alphabetical Index, Antibodies, MF-MN, Primary Antibodies
clone   4A3, monoclonal
biological source   mouse
application(s)   immunohistochemistry: suitable
  western blot: suitable
species reactivity   human
shipped in   wet ice
isotype   IgG1κ
Quality Level   100
antibody product type   primary antibodies
NCBI accession no.   NP_004985
UniProt accession no.   P14780
Gene Information   human ... MMP9(4318)


General description

Matrix metalloproteinase 9 (MMP-9), a member of the peptidase M10A family, is a multidomain zinc metalloproteinase enzyme, which is highly expressed in neurons and glia of the hippocampus, cerebral cortex, and cerebellum. The active MMP-9 is formed upon cell stimulation by enzymatic cleavage of the precursor, proMMP-9. Because of its function in tissue degradation, MMP-9 is tightly regulated by multiple mechanisms, including glycosylation, inhibition by TIMP1, internalization, and sequestration. MMP-9 plays an important role in long-term potentiation, synaptic plasticity, and memory. Several studies have reported an increase in levels of MMP-9 after CNS injury, as well during the development of various cancers.


This antibody recognizes the N-terminus of MMP-9 (Active).


Epitope: N-terminus

Ovalbumin-conjugated linear peptide corresponding to the N-terminus of human MMP-9 (Active).


Research Category
Cell Structure

Research Sub Category

This Anti-MMP-9 (Active) Antibody, clone 4A3 is validated for use in Western Blotting, IHC for the detection of MMP-9 (Active).

Western Blot Analysis: A representative lot from an independent laboratory detected the active form of MMP-9 in WB (Duncan, M. E., et al. 1998. Eur J Biochem. 258(1):37-43).

Immunohistochemistry Analysis: A representative lot from an independent laboratory detected the active form of MMP-9 in oesophageal cancer tissues (Duncan, M. E., et al. 1998. Eur J Biochem. 258(1):37-43).

Target description

~67 kDa observed. Under reducing conditions in SDS-PAGE, MMP-9 monomer (proenzyme) is observed as a major band at ~ 92 kDa Activation of MMP-9 proenzyme with trypsin yields different active forms at ~64, ~67, and ~82 kDa in a time dependent manner (Duncan, M. E., et al. 1998. Eur J Biochem. 258(1):37-43).

Physical form

Format: Purified

Protein G Purified

Purified mouse monoclonal IgG1κ in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Storage and Stability

Stable for 1 year at 2-8°C from date of receipt.


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.


Evaluated by Western Blot with the active form of MMP-9.

Western Blot Analysis: A 1:250 dilution from a reprsentative lot detected the active form of MMP-9 in WB.

Analysis Note

Active form of MMP-9

Safety & Documentation

Safety Information

WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles


Antibody Basics

Immunoglobulins (Igs) are produced by B lymphocytes and secreted into plasma. The Ig molecule in monomeric form is a glycoprotein with a molecular weight of approximately 150 kDa that is shaped more ...
Keywords: Affinity chromatography, Centrifugation, Chromatography, Digestions, Direct immunofluorescence, Gene expression, High performance liquid chromatography, Immunofluorescence, Ion Exchange, Microscopy, Precipitation, Purification, Rheumatology, Scanning electron microscopy


Western Blot Protocol | Immunoblotting Protocol

Western Blotting refers to the electrophoretic transfer of proteins from sodium dodecyl sulfate polyacrylamide gels to sheets of PVDF or nitrocellullose membrane, followed by immunodetection of prote...
Keywords: AGE, Buffers, Cell disruption, Detection methods, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

Related Content

Antibody Explorer | Buy Primary Antibodies & Secondary Antibodies

Primary, Secondary and Recombinant Monoclonal Antibodies Providing highly cited primary and secondary antibodies, we have you covered for your ELISA, western blot, immunohistochemistry or other assay...
Keywords: Alzheimer Disease, Cancer, Chromatin immunoprecipitation, Diagnostic, Enzyme-linked immunosorbent assay, Flow cytometry, Immunocytochemistry, Immunofluorescence, Immunohistochemistry, Neuroscience, Western blot

Peer-Reviewed Papers


Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?