Recombinant Human Lumican Protein, CF

R&D Systems, part of Bio-Techne | Catalog # 2846-LU

R&D Systems, part of Bio-Techne
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2846-LU-050
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Key Product Details

Source

NS0

Accession #

P51884

Conjugate

Unconjugated

Applications

Bioactivity

View all Lumican Proteins and Enzymes »

Product Specifications

Source

Mouse myeloma cell line, NS0-derived human Lumican protein
Gln19-Asn338, with a C-terminal 6-His tag

Purity

>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.

Endotoxin Level

<1.0 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

No results obtained: Gln19 predicted

Predicted Molecular Mass

37.5 kDa

SDS-PAGE

55-65 kDa, reducing conditions

Activity

Measured by the ability of the immobilized protein to support the adhesion of BCE C/D-1b bovine corneal endothelial cells.
When 5 x 104 cells per well are added to Recombinant Human Lumican coated plates (10 μg/mL, 100 μL/well),  >35% will adhere after 50 minutes at 37 °C.
Optimal dilutions should be determined by each laboratory for each application.

Reviewed Applications

Read 1 review rated 4 using 2846-LU in the following applications:

Formulation, Preparation and Storage

2846-LU
Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution
Reconstitute at 200 μg/mL in PBS.

Reconstitution Buffer Available:
Size / Price
Qty
Shipping The product is shipped at ambient temperature. 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 reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: Lumican

Lumican is a 40 kDa member of the family of small leucine-rich repeat proteoglycans (SLRPs) and the class II subfamily (1). Human Lumican is synthesized as a 338 amino acid (aa) precursor that contains an 18 aa signal sequence and a 320 aa mature chain (SwissProt #: P51884). The mature chain contains a negatively charged N-terminal domain containing sulfated tyrosine and disulfide bonds, 12 leucine-rich repeats (LRRs), four potential sites of N-linked glycosylation, and a carboxyl terminal domain containing two conserved cysteines (1). Mature human Lumican is 88%, 87%, and 70% aa identical to mature mouse, rat, and chick Lumican, respectively. SLRPs constitute an important fraction of noncollagenous extracellular matrix proteins (ECM) proteins (1, 2). Lumican is expressed in a variety of tissues, including skin, artery, lung, cornea, kidney, bone, aorta, and articular cartilage (1). Lumican’s role in vivo has been found using Lumican null mice. These mice have functional deficits including corneal opacity as well as skin and tendon fragility associated with disorganized and loosely packed collagen fibers
(1, 3-6). The abnormal connective tissue phenotype seen in the Lumican null mice shows the importance of the role of Lumican in collagen fibrillogenesis (1). In addition to the control of collagen fibril assembly, Lumican has been shown to play a role in the regulation of cell proliferation (7, 8), migration (8, 9), and adhesion (9). Lumican’s over-expression has been reported in carcinoid tumor, breast, colorectal, neuroendocrine, uterine cervical and pancreatic cancers (10).

References

  1. Nikitovic, D. et al. (2008) IUBMB Life 60:818.
  2. Blochberger, T.C. et al. (1992) J. Biol. Chem. 267:347.
  3. Chakravarti, S. et al. (1998) J. Cell Biol. 141:1277.
  4. Chakravarti, S. et al. (2000) Invest. Ophthalmol. Vis. Sci. 41:3365.
  5. Jepsen, K.J. et al. (2002) J. Biol. Chem. 277:35532.
  6. Chakravarti, S. et al. (2003) Invest. Ophthalmol. Vis. Sci. 44:2422.
  7. Vuillermoz, B. et al. (2004) Exp. Cell Res. 296:294.
  8. Nikitovic, D. et al. (2008) FEBS J. 275:350.
  9. D’Onofrio, M.F. et al. (2008) Biochem. Biophys. Res. Commun. 365:266.
  10. Ishiwata, T. et al. (2007) Oncol. Rep. 18:537.

Alternate Names

LDC, LUM, SLRR2D

Entrez Gene IDs

4060 (Human); 17022 (Mouse)

Gene Symbol

LUM

UniProt

P51884

Additional Lumican Products

Product Documents for Recombinant Human Lumican Protein, CF

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Product Specific Notices for Recombinant Human Lumican Protein, CF

For research use only

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