Extensin domain (IPR006706)

Short name: Extensin_dom

Overlapping homologous superfamilies


Domain relationships



Extensins shares protein sequence similarity with hydroxyproline-rich glycoproteins (HRGPs) found in the plant extracellular matrix. They form a structural component which strengthens the primary cell wall; they can account for up to 20% of the dry weight of the cell wall. The key to the role of HRGPs in cell wall self-assembly and cell extension lies in their chemistry, which is dependent on extensive post-translational modifications (PTMs): hydroxylation, glycosylation, and cross-linking. Repetitive peptide motifs characterise HRGPs [PMID: 23578334].

GO terms

Biological Process

GO:0009664 plant-type cell wall organization

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.