hydrolase activity, hydrolyzing O-glycosyl compounds endo-1,3-alpha-L-rhamnosidase activity ai endo-(1->3)-alpha-L-rhamnosidase activity endorhamnosidase activity molecular_function endo-(1,3)-alpha-L-rhamnosidase activity Catalysis of the reaction: R1-L-rhamnose-(1->3)-alpha-L-rhamnose-R2 + H2O = R1-L-rhamnose + L-rhamnose-R2. This reaction is the hydrolysis of an alpha-(1->3) linkage between two rhamnose residues in a polysaccharide chain. 2011-10-05T03:30:33Z GO:0052775