• USA Home
  • F4639 - Monoclonal Anti-Fibrinogen antibody produced in mouse

F4639 Sigma

Monoclonal Anti-Fibrinogen antibody produced in mouse

clone FG-21, ascites fluid



Related Categories Alphabetical Index, Antibodies, Antibodies for Cell Biology, Antibodies for Immune Cell Signaling and Blood, Antibodies to Clotting Factors,
species reactivity   baboon, human
application(s)   indirect ELISA: 1:4,000
clone   FG-21, monoclonal
antibody form   ascites fluid
isotype   IgG2a
contains   15 mM sodium azide
shipped in   dry ice
storage temp.   −20°C
Gene Information   human ... FGA(2243), FGB(2244), FGG(2266)
biological source   mouse
conjugate   unconjugated



purified haptoglobin from pooled human plasma containing the three major haptotypes.

General description

Fibrinogen, is a thrombin-coagulable soluble plasma 340kDa glycoprotein, composed of paired sets of three subunits i.e. α, β, γ. It plays a crucial role in protecting the vascular network against the loss of blood after tissue injury. Among three subunits, β and γ subunits contain one N-glycosylation site, which is occupied by a biantennary N-glycan. It contains three pairs of disulfide bonded chains called α, β, γ which further folded into four structural domains: the D, E, connector and the COOH-terminal region of the Aα chain.


The antibody is specific for human fibrinogen and recognizes an epitope sensitive to reduction commonly used in immunoblotting assays. It also reacts with synthetic human fibrinopeptides A and B, fibrinogen related peptides and baboon fibrinogen. No cross-reactivity with bovine, pig, sheep, horse, dog, goat, rabbit, guinea pig, or rat is observed.


Applications in which this antibody has been used successfully, and the associated peer-reviewed papers, are given below.
Western Blotting (1 paper)

Monoclonal Anti-Fibrinogen antibody is suitable for SDS-PAGE and western ligand blot analysis of E. coli lysates containing recombinant y chains. It is also suitable for indirect ELISA at a dilution of 1:4,000.

Features and Benefits

Antibody Bioguarantee
Evaluate our antibodies with complete peace of mind. If the antibody does not perform in your application, we will issue a full credit or replacement antibody. Learn more.

Biochem/physiol Actions

Plasmin attacks the Aα chain COOH domain to produce the heterogeneous fragment X. After a series of degradation, it ended with terminal digestion products: fragments D and E which represent the major globular domains in fibrinogen. Mutations in this gene leads to several disorders including hypofibrinogenemia, afibrinogenemia.

Price and Availability

Antibody Explorer

Explore with Confidence
Safety & Documentation

Safety Information

RIDADR  NONH for all modes of transport
WGK Germany  2
Protocols & Articles


Antibody Basics

Immunoglobulins (Igs) are produced by B lymphocytes and secreted into plasma. The Ig molecule in monomeric form is a glycoprotein with a molecular weight of approximately 150 kDa that is shaped more ...
Keywords: Affinity chromatography, Centrifugation, Chromatography, Digestions, Direct immunofluorescence, Gene expression, High performance liquid chromatography, Immunofluorescence, Ion Exchange, Microscopy, Precipitation, Purification, Rheumatology, Scanning electron microscopy

Related Content

Antibody Explorer | Buy Primary & Secondary Antibodies

Monoclonal and polyclonal primary antibodies are focused on cell biology, neurobiology and molecular biology. Secondary antibodies targeting multiple host’s IgG are conjugated to alkaline phosphatase...
Keywords: Amplification, Buffers, Cell biology, Enzyme-linked immunosorbent assay, Immunofluorescence, Immunohistochemistry, Inflammation, Molecular biology, Phosphorylations, Purification, Western blot

Peer-Reviewed Papers


Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?