• Product nameAnti-GFP antibody
    See all GFP primary antibodies
  • Description
    Goat polyclonal to GFP
  • SpecificityReactive against all variants of Aequorea victoria GFP such as S65T-GFP, RS-GFP, YFP and EGFP.
  • Tested applicationsSuitable for: WB, IPmore details
  • Immunogen

    Highly purified recombinant full length protein made in Escherichia coli. The antibody is directed against the entire GFP molecule.

  • General notesProtein A will not bind goat IgG, so use alternates (eg. protein G) in IP with this antibody. This antibody is available in an affinity purified form as ab5450.


  • FormLiquid
  • Storage instructionsShipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.
  • Storage bufferPreservative: 0.05% Sodium Azide
  • PurityWhole antiserum
  • ClonalityPolyclonal
  • IsotypeIgG
  • Research areas


Our Abpromise guarantee covers the use of ab5449 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB 1/5000 - 1/20000.
IP Use 0.5µl for 106 cells.


  • RelevanceFunction: Energy-transfer acceptor. Its role is to transduce the blue chemiluminescence of the protein aequorin into green fluorescent light by energy transfer. Fluoresces in vivo upon receiving energy from the Ca2+ -activated photoprotein aequorin.

    Subunit structure: Monomer.

    Tissue specificity: Photocytes.

    Post-translational modification: Contains a chromophore consisting of modified amino acid residues. The chromophore is formed by autocatalytic backbone condensation between Ser-65 and Gly-67, and oxidation of Tyr-66 to didehydrotyrosine. Maturation of the chromophore requires nothing other than molecular oxygen.

    Biotechnological use: Green fluorescent protein has been engineered to produce a vast number of variously colored mutants, fusion proteins, and biosensors. Fluorescent proteins and its mutated allelic forms, blue, cyan and yellow have become a useful and ubiquitous tool for making chimeric proteins, where they function as a fluorescent protein tag. Typically they tolerate N- and C-terminal fusion to a broad variety of proteins. They have been expressed in most known cell types and are used as a noninvasive fluorescent marker in living cells and organisms. They enable a wide range of applications where they have functioned as a cell lineage tracer, reporter of gene expression, or as a measure of protein-protein interactions. Can also be used as a molecular thermometer, allowing accurate temperature measurements in fluids. The measurement process relies on the detection of the blinking of GFP using fluorescence correlation spectroscopy.

    Sequence similarities: Belongs to the GFP family.

    Biophysicochemical properties: Absorption: Abs(max)=395 nm
    Exhibits a smaller absorbance peak at 470 nm. The fluorescence emission spectrum peaks at 509 nm with a shoulder at 540 nm.
  • Alternative names
    • GFP antibody
    • Green fluorescent protein antibody
    • yfp antibody

Anti-GFP antibody images

  • Lane 1 : parental YTS cells (negative control) Lanes 2-5 : YTS cells transfected with KIR-EGFP (mw 88 kD) KIR-EGFP IP's with Goat polyclonal to GFP (ab5449) using 0.1 ul for 2x106 cells. KIR-EGFP detected with a mouse monoclonal to KIR receptor (Borszcz et al EGI 2003, 33: 1084).
  • 5 ng GFP on PVDF membrane QC. Goat polyclonal to GFP (ab5449) used at dilutions of: Lane 1 : 1/2500 Lane 2 : 1/5000 Lane 3 : 1/10,000 Lane 4 : 1/20,000

References for Anti-GFP antibody (ab5449)

This product has been referenced in:
  • Dannenberg H  et al. Synergy of direct and indirect cholinergic septo-hippocampal pathways coordinates firing in hippocampal networks. J Neurosci 35:8394-410 (2015). Read more (PubMed: 26041909) »
  • Weitzel LR  et al. Discovery and verification of protein differences between Er positive/Her2/neu negative breast tumor tissue and matched adjacent normal breast tissue. Breast Cancer Res Treat 124:297-305 (2010). WB . Read more (PubMed: 20087651) »

See all 4 Publications for this product

Product Wall

Abcam guarantees this product to work in the species/application used in this Abreview.
Application Western blot
Sample Saccharomyces cerevisiae Cell lysate - nuclear (Hansenula polymorpha)
Loading amount 10 µg
Specification Hansenula polymorpha
Gel Running Conditions Reduced Denaturing (12)
Blocking step BSA as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 5% · Temperature: 25°C

Abcam user community

Verified customer

Submitted Sep 28 2009

Thank you for your enquiry. I can confirm that ab5450 (affinity purified) and ab5449 (crude) are exactly what you are looking for. These antibodies were made in goat using the exact same antigen and they work just as well as ab6556 in all applicati...

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Thank you for your enquiry. If your CFP is derived from the GFP of Aequorea victoria jellyfish, then I am afraid all our anti-GFP antibodies will cross-react with that protein, since the difference is a single amino-acid substitution and none of ou...

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Thank you for your interesting enquiry. I have had a look at the details for the immunogens on these antibodies and obtained some details for you. ab1218 is a mouse monoclonal which is been raised against a recombinant GFP fusion protein using amin...

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Yes, it is very likely it will detect EGFP as well.