Elicitin (IPR002200)

Short name: Elicitin

Overlapping homologous superfamilies

Family relationships



Elicitins are small, highly-conserved proteins secreted by phytopathogenic fungi belonging to the phytophthora species [PMID: 7753775]. They are toxic proteins reponsible for inducing a necrotic and systemic hypersensitive response in plants from the solanaceae and cruciferae families. Leaf necrosis provides immediate control of fungal invasion and induces systemic acquired resistance; both responses mediate basic protection against subsequent pathogen inoculation.

Members of this family share a high level of sequence similarity, but they differ in net charge, dividing them into two classes: alpha and beta [PMID: 7753775, PMID: 24186785]. Alpha-elicitins are highly acidic, with a valine residue at position 13, whereas beta-elicitins are basic, with a lysine at the same position. Residue 13 is known to be involved in the control of necrosis and, being exposed, is thought to be involved in ligand/receptor binding [PMID: 24186785, PMID: 9385630]. Phenotypically, the two classes can be distinguished by their necrotic properties: beta-elicitins are 100-fold more toxic and provide better subsequent protection [PMID: 7753775].

GO terms

Biological Process

GO:0009405 pathogenesis

Molecular Function

No terms assigned in this category.

Cellular Component

GO:0005576 extracellular region

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.