This is a family of oligogalacturonate lyases, referred to more generally as pectate lyase family 22. These proteins fold into 7-bladed beta-propellers.

1: Structural and mechanistic classification of uronic acid-containing polysaccharide lyases. Garron ML, Cygler M; Glycobiology. 2010;20:1547-1573. PMID:20805221

2: The active site of oligogalacturonate lyase provides unique insights into cytoplasmic oligogalacturonate beta-elimination. Abbott DW, Gilbert HJ, Boraston AB; J Biol Chem. 2010;285:39029-39038. PMID:20851883