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Fibronectin Polyclonal antibody

Fibronectin Polyclonal Antibody for FC, IF, IHC, IP, WB, ELISA

Host / Isotype

Rabbit / IgG


human, mouse, rat and More (2)





Cat no : 15613-1-AP


CIG, Cold insoluble globulin, ED B, Fibronectin, fibronectin 1, FINC, FN, FN1, FNZ, GFND, GFND2, LETS, MSF

Tested Applications

Positive WB detected inhuman plasma, NIH/3T3 cells, MDA-MB-453s cells
Positive IP detected inNIH/3T3 cells
Positive IHC detected inhuman colon cancer tissue, human breast cancer tissue, rat bladder tissue
Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0
Positive IF detected inNIH/3T3 cells
Positive FC detected inNIH/3T3 cells

Recommended dilution

Western Blot (WB)WB : 1:2000-1:20000
Immunoprecipitation (IP)IP : 0.5-4.0 ug for IP and 1:200-1:1000 for WB
Immunohistochemistry (IHC)IHC : 1:300-1:1200
Immunofluorescence (IF)IF : 1:50-1:500
Sample-dependent, check data in validation data gallery

Product Information

15613-1-AP targets Fibronectin in WB, IP, IHC, IF, FC, ELISA applications and shows reactivity with human, mouse, rat samples.

Tested Reactivity human, mouse, rat
Cited Reactivityhuman, mouse, rat, medaka embryos, pig
Host / Isotype Rabbit / IgG
Class Polyclonal
Type Antibody
Immunogen Fibronectin fusion protein Ag8004
Full Name fibronectin 1
Calculated molecular weight 2386 aa, 263 kDa
Observed molecular weight 250-275 kDa
GenBank accession numberBC005858
Gene symbol FN1
Gene ID (NCBI) 2335
Conjugate Unconjugated
Form Liquid
Purification Method Antigen affinity purification
Storage Buffer PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
Storage ConditionsStore at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage.

Background Information

Fibronectins play a role in cell adhesion, motility, wound healing, and the maintenance of cell shape. Fibronectins bind to cell surfaces via interactions with integrins and various molecules such as collagen, fibrin, heparin, DNA, and actin (PMID: 3326130). Cellular interaction with fibronectin (FN1) promotes cell cycle progression and proliferation by influencing cyclins. 

What is the molecular weight of FN1?

The molecular weight of FN1 is 220 kDa. 

What is the tissue specificity of FN1?

FN1 is a large glycoprotein that exists in both a soluble form in plasma (plasma FN1) and other body fluids and an insoluble form in the extracellular matrix (cellular FN1) (PMID: 21923916). Plasma FN1, or the dimeric form, is secreted by hepatocytes, whereas cellular FN1, the dimeric or cross-linked multimeric form, is produced by fibroblasts and epithelial cells and deposited as fibrils in the extracellular matrix. 

What are the post-translational modifications of FN1?

FN1 is often sulfated and its C-terminal NC1 peptide, anastellin, is produced as a result of proteolytic processing and can inhibit tumor growth, angiogenesis, and metastasis by activating p38 MAPK and inhibiting lysophospholipid signaling (PMID: 11209058).

What is FN1's role in embryogenesis?

Fibronectin has a crucial role in the development of the left-right body axis during embryogenesis (PMID: 21466802). 

What is FN1's involvement in disease?

Fibronectin glomerulopathy is a kidney disease that eventually leads to end-stage renal disease and is caused by mutations in the FN1 gene. Mutations in FN1 lead to the production of abnormal fibronectin protein that is deposited in the glomeruli of the kidney (PMID: 18268355).


Product Specific Protocols
WB protocol for Fibronectin antibody 15613-1-APDownload protocol
IHC protocol for Fibronectin antibody 15613-1-APDownload protocol
IF protocol for Fibronectin antibody 15613-1-APDownload protocol
IP protocol for Fibronectin antibody 15613-1-APDownload protocol
Standard Protocols
Click here to view our Standard Protocols



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The reviews below have been submitted by verified Proteintech customers who received an incentive forproviding their feedback.


Susanne (Verified Customer) (08-23-2022)

under reduced conditions, blocked with 5% milk powder, incubation over night 4°C

  • Applications: Western Blot
  • Primary Antibody Dilution: 1 : 1000
  • Cell Tissue Type: supernatant from human primary fibroblasts (serumfree !)
Fibronectin Antibody Western Blot validation (1 : 1000 dilution) in supernatant from human primary fibroblasts (serumfree !) (Cat no:15613-1-AP)

Pankhuri (Verified Customer) (08-19-2022)

I tried this antibody for IF in neural stem cells. It works great in the conc. 1:200.

  • Applications: Immunofluorescence
  • Cell Tissue Type: Progenitor cells
Fibronectin Antibody Immunofluorescence validation ( dilution) in Progenitor cells (Cat no:15613-1-AP)

Ren Jie (Verified Customer) (07-11-2022)

Very clean bands near 220 kD indicating fibronectin monomer

  • Applications: Western Blot
  • Primary Antibody Dilution: 1:1000
  • Cell Tissue Type: Human immortalized mammary fibroblasts
Fibronectin Antibody Western Blot validation (1:1000 dilution) in Human immortalized mammary fibroblasts (Cat no:15613-1-AP)

SD (Verified Customer) (07-08-2022)


  • Applications: Western Blot
  • Cell Tissue Type: Fibroblast
Fibronectin Antibody Western Blot validation ( dilution) in Fibroblast (Cat no:15613-1-AP)

zunyi (Verified Customer) (03-11-2022)

This ab is used for immunohistochemistry on mouse paraffin-embedded sections. Antigen-retrieve, using pH 6.0 citric buffer, was performed prior to staining.

  • Applications: Immunohistochemistry, Immunofluorescence
  • Primary Antibody Dilution: 1:100
  • Cell Tissue Type: mouse bladder

Lindsey (Verified Customer) (05-24-2021)

Works beautifully! Looking forward to working more with this antibody in different tissue/prep types

  • Applications: Immunohistochemistry, Immunofluorescence
  • Primary Antibody Dilution: 1:100
  • Cell Tissue Type: Human kidney (FFPE)
Fibronectin Antibody Immunohistochemistry,Immunofluorescence validation (1:100 dilution) in Human kidney (FFPE) (Cat no:15613-1-AP)