Truncated Flagellin 22 (flg22)


  • Description

  • Application Data


Peptide from bacterial flagella potent elicitor of plant defences. Selective tomato FLS2 receptor agonist

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Application Data

Catalogue number crb1000747
Molecular Weight 2087.1
Sequence (one letter code)


Sequence (three letter code)


Purity >95%

Chinchilla (2006). The Arabidopsis Receptor Kinase FLS2 Binds flg22 and Determines the Specificity of Flagellin Perception. Plant Cell 18(2) 465 PMID: 16377758


Jelenska et al., (2017). Flagellin peptide flg22 gains access to long-distance trafficking in Arabidopsis via its receptor, FLS2. J. Exp. Bot. 68(7) 1769 PMID: 28521013


Sano et al., (2014). Light-dependent expression of flg22-induced defense genes in Arabidopsis. Front. Plant Sci. 5 531 PMID: 25346742

Manufactured in: United Kingdom
Data Sheet Material Safety Data Sheet (MSDS)

Flagellin is the structural protein which forms the major portion of bacterial flagella filaments. The N- and C- terminals of flagellin are highly conserved regions, whereas the central core can vary greatly between bacterial species. Flagellin 22 (flg22) is the most conserved stretch of amino acids across bacterial species and is located towards the N-terminal of flagellin.

Flg22 is a potent elicitor of plant immune responses and is recognised in plants by the membrane bound leucine-rich repeat-receptor kinase FLAGELLIN SENSITIVE 2 (FLS2). Flg22 induces defence gene expression to trigger both local and systemic immune responses and is thus widely used in plant defence studies.

Truncated flagellin 22 (flg22-Δ2) represents amino acids 1-20 of flg22. It is a strong and selective agonist of tomato FLS2, with weak agonist activity towards Arabidopsis FLS2 even at high concentrations.

Truncated Flagellin 22 (flg22)

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