Conserved Site

Barwin, conserved site (IPR018226)

Short name: Barwin_CS


Barwin is a basic protein isolated from aqueous extracts of barley seeds. It is 125 amino acids in length, and contains six cysteine residues that combine to form three disulphide bridges [PMID: 1390663, PMID: 1390664]. Comparative analysis shows the sequence to be highly similar to a 122 amino acid stretch in the C-terminal of the products of two wound-induced genes (win1 and win2) from potato, the product of the hevein gene of rubber trees, and pathogenesis-related protein 4 from tobacco. The high levels of similarity to these proteins, and their ability to bind saccharides, suggest that the barwin domain may be involved in a common defence mechanism in plants.

GO terms

Biological Process

GO:0042742 defense response to bacterium
GO:0050832 defense response to fungus

Molecular Function

No terms assigned in this category.

Cellular Component

No terms assigned in this category.

Contributing signatures

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