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Recombinant Mouse Mimecan Protein, CF

Bio-Techne includes R&D Systems | Catalog # 2949-MC

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2949-MC-050

Key Product Details

Source

NS0

Accession #

Conjugate

Unconjugated

Applications

Bioactivity

Product Specifications

Source

Mouse myeloma cell line, NS0-derived mouse Mimecan protein
Ala20-Phe298, with a C-terminal 6-His tag

Purity

>90%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

<0.10 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Ala20

Predicted Molecular Mass

32.6 kDa

SDS-PAGE

50 kDa, reducing conditions

Activity

Measured by its ability to modulate collagen fibrillogenesis. Ge, G. et al. (2004) J. Biol. Chem. 279:41626.
At 15 µg/mL, rmMimecan can significantly retard the rate of type I collagen fibrillogenesis.

Formulation, Preparation and Storage

2949-MC
Formulation Supplied as a 0.2 μm filtered solution in PBS.
Shipping The product is shipped with dry ice or equivalent. Upon receipt, store it immediately at the temperature recommended below.
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 opening.

Background: Mimecan

Mimecan is a 34 kDa secreted monomeric glycoprotein that belongs to the SLRP, or small leucine-rich proteoglycan family of matrix molecules (1, 2). All SLRP family members contain multiple leucine rich repeats, of which there are two types; a 21 amino acid (aa) proline-containing S-type, and a 26 aa phenylalanine-containing T-type (2, 3). Mimecan is a class III SLRP subfamily member, which means it contains an S-T (vs. S-T-T) repeating motif. Mouse Mimecan is synthesized as a 298 aa precursor that contains a 19 aa signal sequence and a 279 aa mature region (3, 4). The mature region contains a 75 aa N-terminus followed by a 13 aa cysteine-rich region and seven consecutive LRR repeats. There is one (presumably occupied) C-terminal N-linked glycosylation site and a potential keratan sulfate attachment point in LRR #4 (aa 161 - 180) (3). Nomenclature for the mimecan molecule is confusing. Mimecan is best thought of as being the full-length, 279 aa glycoprotein (5). Proteolytic removal of the first 56 aa by BMP-1/Tolloid-like proteinases generates the 25 kDa KSPG form (aa 57 - 279) (3). The 17 kDa, 56 aa mature N-terminus has been referred to as the minecam prosegment (3). When the prosegment is removed, mature mouse KSPG (aa 57 - 279) is 98%, 91%, 90% and 91% aa identical to rat, bovine, human and canine KSPG, respectively. A 12 kDa form (aa 175 - 279) consisting of the 105 aa of the C-terminus (OIF/osteoglycan) has also been observed (6). Noncoding alternate splice forms for mouse are believed to exist and should be expressed in a tissue specific fashion (7, 8). No splice forms are known that impact the coding region. Mimecan seems to exist as proteoglycan (PG) and non-PG forms. In cornea, keratan sulfate is present, although the exact function of the PG is unknown. The corneal extracellular matrix is normally transparent. While mimecan is reported to inhibit fibrillogenesis, possibly by limiting lateral accretion of collagen monomers, it is unclear if the mimican PG actually contributes to transparency (3, 9). In other tissues, mimecan and its derivatives can exist as simple glycoproteins, absent of any PG adduct (6). The uncertain nature of mimecan’s structure and function gives rise to its name: Mime is a Norse-legend dwarf that was notoriously deceitful and misleading (6).

References

  1. Iozzo, R.V. (1999) J. Biol. Chem. 275:18843.
  2. Matsushima, N. et al. (2000) Proteins 38:210.
  3. Ge, G. et al. (2004) J. Biol. Chem. 279:41626.
  4. Ujita, M. et al. (1995) Gene 158:237.
  5. Hu, S-M. et al. (2005) J. Clin. Endocrinol. Metab. 90:6657
  6. Funderburgh, J.L. et al. (1997) J. Biol. Chem. 272:28089.
  7. Tasheva, E.S. et al. (1999) J. Biol. Chem. 274:18693.
  8. Tasheva, E.S. et al. (1997) J. Biol. Chem. 272:32551.
  9. Tasheva, E.S. et al. (2002) Mol. Vis. 8:407.

Alternate Names

KSPG25, OGN, OIF, SLRR3A

Entrez Gene IDs

4969 (Human); 18295 (Mouse)

Gene Symbol

OGN

UniProt

Additional Mimecan Products

Product Documents for Recombinant Mouse Mimecan Protein, CF

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Recombinant Mouse Mimecan Protein, CF

For research use only

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