• Species Reactivity

  Mouse

• Specificity

  Detects mouse Matrilin-4 in direct ELISAs and Western blots. In direct ELISAs, approximately 15% cross-reactivity with recombinant human (rh) Matrilin-4 is observed and less than 2% cross-reactivity with recombinant mouse Matrilin-2 and rhMatrilin-3 is observed.

• Source

  Polyclonal Goat IgG

• Purification

  Antigen Affinity-purified

• Immunogen

  Mouse myeloma cell line NS0-derived recombinant mouse Matrilin-4    
  Gln22-Lys624    
  Accession # O89029

• Formulation

  Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 μm filtered solution in PBS.

• Label

  Unconjugated

Applications

• 
  

  Recommended    
  Concentration

  Sample

• Western Blot

  0.1 μg/mL

  Recombinant Mouse Matrilin?4 (Catalog # )

• 
  

Please Note: Optimal dilutions should be determined by each laboratory for each application.  are available in the Technical Information section on our website.

Preparation and Storage

• Reconstitution

  Reconstitute at 0.2 mg/mL in sterile PBS.

• Shipping

  The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C

• Stability & Storage

  Use a manual defrost freezer and avoid repeated freeze-thaw cycles.    

• 12 months from date of receipt, -20 to -70 °C as supplied.

• 1 month, 2 to 8 °C under sterile conditions after reconstitution.

• 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: Matrilin-4

Matrilin-4 is a 73 kDa secreted glycoprotein that is a member of the matrilin family of the von Willebrand Factor-A (vWA) domain-containing superfamily (1). Matrilins are modular extracellular matrix proteins that serve as adaptors and linkers for other matrix proteins. Matrilin-4, like Matrilin?2, has a broad distribution in both cartilage and in loose connective tissue such as dermis, lung and kidney, while Matrilins 1 and 3 are limited to cartilage. Matrilin-4 is present in nervous tissue and is abundant in the brain (2, 3). Mature mouse Matrilin-4 shares 98%, 90%, 89% and 66% amino acid (aa) identity with rat, human, canine and chicken Matrilin-4, respectively. The 624 aa mouse Matrilin-4 contains a 22 aa signal sequence, two potential glycosylation sites, and four cysteine-rich EGF-like domains placed between two vWA domains. A short isoform lacks the N-terminal vWA domain (aa 28?217). A C-terminal alpha -helix/coiled-coil region (aa 590?623) by which multimers are formed is often proteolytically removed so that Matrilin-4 is found as a mixture of monomers with homo- or hetero- dimers and trimers. Matrilin-4 forms multimers with Matrilins 1 and 2 but not with Matrilin-3 (3, 4). The N-terminal vWA domains of Matrilins associate with collagen IV microfibrils via the proteoglycans biglycan and decorin, linking the fibrils with other matrix constituents aggrecan and collagen II (5, 6). Matrilins also show calcium-dependent binding to the cartilage oligomeric matrix protein (COMP); this interaction is of high affinity for oligomeric Matrilin-4 and somewhat lower affinity for monomeric Matrilin-4 (6). Functions and distributions of Matrilins overlap enough so that knockouts of Matrilins 1, 2 and 3 lack obvious phenotypes (1).

• References:

1. Wagener, R. et al. (2005) FEBS Lett. 579:3323.

2. Klatt, A.R. et al. (2002) Matrix Biol. 21:289.

3. Klatt, A.R. et al. (2001) J. Biol. Chem. 276:17267.

4. Frank, S. et al. (2002) J. Biol. Chem. 277:19071.

5. Wiberg, C. et al. (2003) J. Biol. Chem. 278:37698.

6. Mann, H.H. et al. (2004) J. Biol. Chem. 279:25294.

7. Frank, S. et al. (2002) J. Biol. Chem. 277:19071.

• Entrez Gene IDs:

  8785 (Human); 17183 (Mouse); 296358 (Rat)

• Alternate Names:

  FLJ14417; MATN4; matrilin 4; Matrilin4; Matrilin-4