• USA Home
  • AP309P - Goat Anti-Human IgG Antibody, HRP conjugate

AP309P Sigma-Aldrich

Goat Anti-Human IgG Antibody, HRP conjugate

clone, 1.0 mg/mL, Chemicon®

  •  eCl@ss 32160702

  •  NACRES NA.46



Related Categories Antibodies, Human IgG Secondary Antibodies and Conjugates, Peroxidase Labeled Antibodies, Secondaries listed by Conjugate, Secondaries listed by Target Species,
Quality Level   100
biological source   goat
antibody product type   secondary antibodies
clone   polyclonal
form   lyophilized
species reactivity   human
mfr. no.   Chemicon®
concentration   1.0 mg/mL
application(s)   ELISA: suitable
  western blot: suitable
isotype   IgG
conjugate   peroxidase conjugate
shipped in   wet ice
storage temp.   2-8°C


General description

Immunoglobulin G (IgG) is the main type of glycoprotein antibody found in human serum, secreted by the B cells. It is found in blood and comprises four polypeptide chains, made of two identical 50 kDa γ heavy (H) chains and two identical 25 kDa κ or λ light (L) chains. These chains are inter-linked by di-sulfide bonds. IgG exists in four isotypes IgG1, IgG2, IgG3 and IgG4. IgG has the longest serum half-life compared to other immunoglobulins.


Specific for human IgG gamma chain. The cross-reactivities of anti-human IgG (gamma) antibody are tested in an ELISA. Minimal cross-reactivity to light chains.

The reagent is an affinity purified antibody from goat. The purified antibody is conjugated to horseradish peroxidase (HRP) and stabilized in buffer.


ELISA: 1:3,000

Immunohistochemistry: 1:200-1:500 (1-4)

Immunocytochemistry: 1:200-1:500 (1-4)

Western Blot, chromogenic: 1:200-1-500

Western Blot, chemiluminescent: 1:2,000-1:5,000

Optimal working dilutions must be determined by the end user.

Biochem/physiol Actions

Immunoglobulin G (IgG) initiates the classical pathway of the complement system. It neutralizes virus particles and toxins. IgG plays a vital role in antibody-dependent cell-mediated cytotoxicity (ADCC) and might be associated with allergy. Maternal IgG is transferred to the fetus through the placenta that is crucial for the immune defense of the neonate against infections. Digestion of IgG by papain results in the production of fragment antigen-binding (Fab). Pepsin digestion of IgG leads to the generation of fragment crystallizable (Fc). Levels of IgG in severe acute respiratory syndrome coronavirus (SARS-CoV)-2 infected patients can be used as a potential tool to evaluate the severity and prognosis of coronavirus disease 2019 (COVID-19).

Physical form

ImmunoAffinity Purified

Storage and Stability

The undiluted antibody is stable at 2-8°C for 12 months. Do not store in a diluted format. DO NOT FREEZE.


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.

Safety & Documentation

Safety Information

WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
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

How to Choose a Secondary Antibody

The following information is provided to help you decide which secondary antibody may be best for your particular application.
Keywords: Amplification, Enzyme-linked immunosorbent assay, Flow cytometry, Immobilization, Immunocytochemistry, Immunofluorescence, Immunohistochemistry, Western blot

Secondary Antibodies, Conjugates and Kits

Secondary antibodies are polyclonal or monoclonal antibodies that bind to primary antibodies or antibody fragments, such as the Fc or Fab regions. They are typically labeled with probes that make the...
Keywords: Absorption, Adsorption, Amplification, Bacterial conjugations, Cancer, Digestions, Electrophoresis, Enzyme-linked immunosorbent assay, Flow cytometry, Gel electrophoresis, Gene expression, Hormones, Immobilization, Immunocytochemistry, Immunofluorescence, Immunohistochemistry, Immunology, Immunoprecipitation, Infrared spectroscopy, Microbiology, Microscopy, Purification, Vitamins, Western blot


Western Blot Protocol | Immunoblotting Protocol

Western Blotting refers to the electrophoretic transfer of proteins from sodium dodecyl sulfate polyacrylamide gels to sheets of PVDF or nitrocellullose membrane, followed by immunodetection of prote...
Keywords: AGE, Buffers, Cell disruption, Detection methods, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

Related Content

Antibody Explorer | Buy Primary Antibodies & Secondary Antibodies

Primary, Secondary and Recombinant Monoclonal Antibodies Providing highly cited primary and secondary antibodies, we have you covered for your ELISA, western blot, immunohistochemistry or other assay...
Keywords: Alzheimer Disease, Cancer, Chromatin immunoprecipitation, Diagnostic, Enzyme-linked immunosorbent assay, Flow cytometry, Immunocytochemistry, Immunofluorescence, Immunohistochemistry, Neuroscience, 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?