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This Anti-Lubricin/Proteoglycan 4, clone 5C11 Antibody is validated for use in Western Blotting and Immunohistochemistry (Paraffin) for the detection of Lubricin/Proteoglycan 4.
More>>This Anti-Lubricin/Proteoglycan 4, clone 5C11 Antibody is validated for use in Western Blotting and Immunohistochemistry (Paraffin) for the detection of Lubricin/Proteoglycan 4. Less<<
SDB (Sicherheitsdatenblätter), Analysenzertifikate und Qualitätszertifikate, Dossiers, Broschüren und andere verfügbare Dokumente.
The protein called Lubricin/Proteoglycan 4 is an important secreted protein in the joint critical for joint function and thus is also a focus of research in joint diseases as well. Lubricin/Proteoglycan 4 plays a role in boundary lubrication and prevents the deposition of cartilage from the synovial fluid by controlling the synovial growth of the synovial cells and inhibiting the adhesion of the cells to the cartilage surface. During development, Lubricin/Proteoglycan 4 also acts as a growth factor for hematopoietic and endothelial cell lineages, and Lubricin/Proteoglycan 4 appears important for proper barrier and lubrication development in tissues like the eye. Lubricin/Proteoglycan 4 is highly expressed in joints and near joint boundaries but can also be found in the brain, heart, lung, kidney and other tissues. Lubricin/Proteoglycan 4 has several isoforms that differ in their cell and tissue expression. Isoform C and D are the most widely expressed forms. Finally because of its effects on surfaces, Lubricin/Proteoglycan 4 is being examined in tissue engineering and artificial cartilage development as a treatment for joint diseases.
References
Product Information
Format
Purified
Presentation
Purified mouse monoclonal IgG1κ in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.
This Anti-Lubricin/Proteoglycan 4, clone 5C11 Antibody is validated for use in Western Blotting and Immunohistochemistry (Paraffin) for the detection of Lubricin/Proteoglycan 4.
Key Applications
Western Blotting
Immunohistochemistry (Paraffin)
Application Notes
Immunohistochemistry Analysis: A 1:1,000 dilution from a representative lot detected Lubricin/Proteoglycan 4 in human liver and human heart tissue. Western Blotting Analysis: A representative lot detected purified human synovial lubricin, as well as lubricin in synovial fluid recovered from patients with osteoarthritis (OA), camptodactyly-arthropathy-coxa vara-pericarditis syndrome (CACP), or from bovine, porcine, goat, dog, rat, and guinea pig (Ai, M., et al. (2015). PLoS One. 10(2):e0116237). Western Blotting Analysis: A representative lot detected purified bovine synovial lubricin from calf and steer under both reduced and non-reduced conditions (Schmidt, T.A., et al. (2009). Biochim Biophys Acta. 1790(5):375-384).
Biological Information
Immunogen
Recombinant protein corresponding to human Lubricin/Proteoglycan 4.
~220 kDa observed. The calculated molecular weight of this protein is 151 kDa with many isoforms observed around 145 kDa and it can run higher due to glycosylation.
Physicochemical Information
Dimensions
Materials Information
Toxicological Information
Safety Information according to GHS
Safety Information
Product Usage Statements
Quality Assurance
Evaluated by Western Blotting in Lubercin purified protein.
Western Blotting Analysis: 1.0 µg/mL of this antibody detected 10 µg of purified Lubricin/Proteoglycan 4 protein.
Usage Statement
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.
Disulfide-bonded multimers of proteoglycan 4 PRG4 are present in normal synovial fluids. Schmidt, TA; Plaas, AH; Sandy, JD Biochimica et biophysica acta
1790
375-84
2009
The proteoglycan 4 (PRG4) gene encodes for a mucin-like O-linked glycosylated protein with several names, including lubricin and superficial zone protein. The objective of this study was to analyze PRG4 in normal bovine calf and steer synovial fluids for evidence of native multimers formed by intermolecular disulfide bonds.A combination of mucin biochemical techniques, with antibodies to both terminal domains and the mucin-like domain of PRG4, were used for analyses.Multimers were present in both calf and steer fluids, and reduction and alkylation converts the multimeric complex (likely dimeric) into monomeric subunits. Tandem mass spectrometry analyses supported the Western blot data and identified PRG4 in the reduced approximately 345 kDa monomeric form. Interestingly, approximately 70 kDa fragments released upon reduction contained peptides from both the N and C terminal regions, which most likely represent fragments of a sparsely glycosylated PRG4 population that are disulfide-linked to extensively glycosylated, intact monomers.The analyses described here have demonstrated the presence of native disulfide-bonded multimers of PRG4 in normal bovine synovial fluids.These structures are similar to those described for multimerization of mucins in general. Such multimerization and proteolytic cleavage of PRG4 may have functional significance in joint health and disease.
