This domain is found at the C-terminal end of Rhamnogalacturonan endolyase YesW and Rhamnogalacturonan exolyase YesX from Bacillus subtilis and other bacterial polysaccharide lyases from family 11 (RGL11). These proteins are responsible for an initial cleavage of the RG type I (RG-I) region of plant cell wall pectin. They consist of an N-terminal domain Pfam:PF18370 and a C-terminal eight-bladed beta-propeller domain (this entry) [1-3].

1: A novel structural fold in polysaccharide lyases: Bacillus subtilis family 11 rhamnogalacturonan lyase YesW with an eight-bladed beta-propeller. Ochiai A, Itoh T, Maruyama Y, Kawamata A, Mikami B, Hashimoto W, Murata K; J Biol Chem. 2007;282:37134-37145. PMID:17947240

2: Structural determinants responsible for substrate recognition and mode of action in family 11 polysaccharide lyases. Ochiai A, Itoh T, Mikami B, Hashimoto W, Murata K; J Biol Chem. 2009;284:10181-10189. PMID:19193638

3: Design of thermostable rhamnogalacturonan lyase mutants from Bacillus licheniformis by combination of targeted single point mutations. Silva IR, Jers C, Otten H, Nyffenegger C, Larsen DM, Derkx PM, Meyer AS, Mikkelsen JD, Larsen S; Appl Microbiol Biotechnol. 2014;98:4521-4531. PMID:24419797