Pistil-specific extensin-like protein (IPR003882)

Short name: Pistil_extensin

Overlapping homologous superfamilies


Family relationships



Extensins are plant cell-wall proteins; they can account for up to 20% of the dry weight of the cell wall. They are highly-glycosylated, possibly reflecting their interactions with cell-wall carbohydrates. Amongst their functions is cell wall strengthening in response to mechanical stress (e.g., during attack by pests, plant-bending in the wind, etc.). By contrast with extensin genes, pistil-specific extensin-like genes are not induced under stress conditions. Gene expression is organ-specific and temporally regulated during pistil development. After pollination, transcript levels of pistil-specific extensin-like genes change relative to levels in unpollinated pistils [PMID: 1392607]. The protein sequence is characterised by multiple tandem ser-pro-pro-pro-pro pentapeptide repeats.

GO terms

Biological Process

No terms assigned in this category.

Molecular Function

GO:0005199 structural constituent of cell wall

Cellular Component

No terms assigned in this category.

Contributing signatures

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