Cat. No. 3231

Ac9-25 Ac-Gln-Ala-Trp-Phe-Ile-Glu-Asn-Glu-Glu-Gln-Glu-Tyr-Val-Gln-Thr-Val-Lys

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Biological Activity

N-terminal peptide of Annexin I (AI/Lipocortin I) that inhibits leukocyte extravasation. Acts as a formyl peptide receptor 1 (FPR1) ligand and stimulates neutrophil NADPH oxidase activation.

Technical Data


(Modifications: Gln-1 = N-terminal amide)

Soluble to 1 mg/ml in 20% acetonitrile / water
Desiccate at -20°C

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.

Certificate of Analysis / Safety Data Sheet

Certificate of Analysis: View current batch
Safety Data Sheet: View Safety Data Sheet


Walther et al (2000) A novel ligand of the formyl peptide receptor: annexin I regulates neutrophil extravasation by interacting with the FPR. Mol.Cell 5 831. PMID: 10882119.

Karlsson et al (2005) Neutrophil NADPH-oxidase activation by an annexin AI peptide is transduced by the formyl peptide receptor (FPR), whereas an inhibitory signal is generated independently of the FPR family receptors. J.Leuko.Biol. 78 762.

Rabiert et al (2007) The N-formyl peptide receptors and the anaphylatoxin C5a receptors: an overview. Biochimie 89 1089. PMID: 17428601.

If you know of a relevant citation for this product please let us know.

View Related Products by Target

Keywords: Ac9-25, supplier, Annexin, I, N-terminal, peptide, Acts, FPR1, ligands, FPRL, Formyl, Peptide, Receptors

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