This family consists of several bacterial L-asparaginase II proteins. L-asparaginase (EC:3.5.1.1) catalyses the hydrolysis of L-asparagine to L-aspartate and ammonium. Rhizobium etli possesses two asparaginases: asparaginase I, which is thermostable and constitutive, and asparaginase II, which is thermolabile, induced by asparagine and repressed by the carbon source [1].

1: The L-asparagine operon of Rhizobium etli contains a gene encoding an atypical asparaginase. Ortuno-Olea L, Duran-Vargas S; FEMS Microbiol Lett 2000;189:177-182. PMID:10930734