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F0791 Sigma-Aldrich

Monoclonal Anti-Fibronectin antibody produced in mouse

clone IST-3, ascites fluid



Related Categories Alphabetical Index, Antibodies, Antibodies for Cell Biology, Antibodies for Hematopoietic Stem Cells, Antibodies for Stem Cell Biology,
conjugate   unconjugated
clone   IST-3, monoclonal
biological source   mouse
application(s)   immunocytochemistry: suitable
  immunohistochemistry (frozen sections): suitable
  indirect ELISA: suitable
  indirect immunofluorescence: 1:50 using cultured human fibroblasts
  microarray: suitable
  radioimmunoassay: suitable
  western blot: suitable
species reactivity   bovine, human, rabbit, canine, goat, sheep, chicken
mol wt   antigen 240 kDa
shipped in   dry ice
storage temp.   −20°C
antibody form   ascites fluid
isotype   IgG1
Quality Level   200
antibody product type   primary antibodies
contains   15 mM sodium azide
UniProt accession no.   P02751
Gene Information   human ... FN1(2335)


General description

Fibronectin (FN) is an extracellular matrix protein composed of two nearly-identical disulfide-bound polypeptides with typical molecular weights of 220-280 kDa. Cellular fibronectin is structurally and antigenically similar to cold insoluble globulin from plasma and antibodies to either form usually cross-react. Careful analysis of the FN molecule indicates that it contains several functionally and structurally distinct domains which may bind to cell surfaces and to a variety of molecules such as collagen, heparin, gelatin, fibrin and DNA. FN’s play an important role in diverse biological phenomena including cell adhesion, cell migration, hemostasis and thrombosis, wound healing and the ability to induce a more normal phenotype in transformed cells.

Monoclonal Anti-Human Fibronectin (mouse IgG1 iso-type) is derived from the IST-3 hybridoma produced by the fusion of mouse myeloma cells and splenocytes from BALB/c immunized mice. Fibronectin (FN) is a multifunctional extracellular matrix protein comprising two nearly-identical disulfide-bound polypeptides. It is an adhesive glycoprotein. FN belongs to the ligand glycoprotein family and is is expressed in various cell types. Human fibronectin consists of five distinct domains that are referred to as heparin (Hep)-1/ fibrin (Fib)-1, gelatin (Gel), cell surface (Cell), Hep-2 and Fib-2, based on their affinity for Hep, Gel, Cell or Fib. The FN gene is mapped to human chromosome location 2q35.


Monoclonal Anti-Human Fibronectin, clone IST-3, recognizes an epitope located within the fourth type-three repeat of human plasma fibronectin.


human plasma fibronectin


Mouse monoclonal clone IST-3 anti-Human Fibronectin antibody has been used in:
• enzyme linked immuno sorbent assay (ELISA)
• western blotting
• dot blot
• radio immunoassay (RIA)
• immunocytochemistry
• immunohistochemistry
• immunoprecipitation
• immunofluorescence

Physical form

The product is provided as ascites fluid containing 0.1% sodium azide as preservative.

Storage and Stability

For continuous use, store at 2-8 °C for up to one month. For extended storage, the solution may be frozen in working aliquots. Repeated freezing and thawing is not recommended. Storage in "frost-free" freezers not recommended. If slight turbidity occurs upon prolonged storage, clarify the solution by centrifugation before use.


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.

Biochem/physiol Actions

Fibronectin (FN) binds to cell surfaces and a variety of molecules, such as collagen, heparin, gelatin, fibrin, and DNA. It plays an important role in diverse biological phenomena including cell adhesion, cell migration, hemostasis, and thrombosis. FN is also involved in wound healing and stimulates a normal phenotype in transformed cells. Upregulation of FN leads to tumors, such as nasopharyngeal carcinoma (NPC), ovarian cancer, and head and neck squamous cell carcinoma.

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Protocols & Articles


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