This family represents the C-terminus (approximately 270 residues) of a number of plant Hs1pro-1 proteins, which are believed to confer nematode resistance [1].

1: Isolation and linkage analysis of expressed disease-resistance gene analogues of sugar beet (Beta vulgaris L.). Hunger S, Di Gaspero G, Mohring S, Bellin D, Schafer-Pregl R, Borchardt DC, Durel CE, Werber M, Weisshaar B, Salamini F, Schneider K; Genome 2003;46:70-82. PMID:12669798