Application

Immunohistochemistry Analysis: A 1:250 dilution from a representative lot detected Fibulin-1 in human placenta and human breast tissue.

Research CategoryCell Structure

Detect Fibulin-1 using this Anti-Fibulin-1 Antibody, clone 3D12.1 validated for use in Western Blotting, Immunohistochemistry.

Research Sub CategoryECM Proteins

Disclaimer

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.

General description

Fibulin-1 (UniProt P23142; also known as FIBL-1) is encoded by the FBLN1 (also known as FIBL1, FBLN, PP213) gene (Gene ID 2192) in human. Fibulin-1 is an extracellular matrix protein that interacts with fibronectin and inhibits cell migration and invasion in a fibronectin-dependent manner. Research shows that the EGF-like domains 5 and 6 of fibulin-1 compete against syndecan-4 for binding the C-terminal heparin-binding domain (HepII) of fibronectin, resulting in a suppression of fibronectin-regulated cell adhesion and motility. Fibulin-1 also interacts with fibrinogen and regulates platelet adhesion to influence hemoglutination. In addition, fibulin-1 interacts with elastin and plays a role in the assembly of elastic fibers by mediating association between versican and fibrillin. Other fibulin-1 interactors include calumenin, extracellular matrix protein 1, angiogenin, and hemicentin. There exist four major fibulin-1 isoforms (A, B, C, and D) generated by alternative splicing, with isoforms C and D being the predominant forms. In addition, a smaller isoform of fibulin-1D, fibulin-1D′, is reported to localize in the cytosol and interacts with the intracellular domain of integrin β1. Fibulin-1 is initially produced with a signal peptide (a.a. 1-29), the removal of which yields the mature protein with three N-terminal Anaphylatoxin-like domains (a.a. 36-76, 77-111, 112-144), followed by eight EGF-like domains (a.a. 176-578 of isoform D), with EGF-like domains 5 & 6 mediating fibulin-1 self-association and fibronectin-binding. The C-terminal 137-amino acid in isoform D is truncated in isoform A, and replaced by a shorter sequence of 35 amino acids in isoform B and a sequence of 117 amino acids in isoform C.

Immunogen

GST-tagged recombinant protein corresponding to EGF-like domains 4-6 of human Fibulin-1.

Epitope: EGF-like domains 4-6.

Other Notes

Concentration: Please refer to lot specific datasheet.

Physical form

Protein G Purified

Purified mouse monoclonal IgG2aκ antibody in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Format: Purified

Quality

Evaluated by Western Blotting in SH-SY5Y cell lysate.

Western Blotting Analysis: 4.0 µg/mL of this antibody detected Fibulin-1 in 10 µg of SH-SY5Y cell lysate.

Specificity

Expected to react with all four spliced isoforms of human fibulin-1 (UniProt P23142-1 to P23142-4).

Storage and Stability

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

Target description

~77 kDa observed. 77.2 kDa (isoform D), 61.6 kDa (isoform A), 65.4 kDa (isoform B), and 74.4 kDa (Isoform C) calculated.