ID 4.2.2.3 DE mannuronate-specific alginate lyase. AN alginate lyase I. AN poly(beta-D-mannuronate) lyase. AN poly(mana) alginate lyase. CA Eliminative cleavage of alginate to give oligosaccharides with 4-deoxy- CA alpha-L-erythro-hex-4-enuronosyl groups at their non-reducing ends and CA beta-D-mannuronate at their reducing end. CC -!- The enzyme catalyzes the degradation of alginate by a beta- CC elimination reaction. CC -!- It cleaves the (1->4) bond between beta-D-mannuronate and either CC alpha-L-guluronate or beta-D-mannuronate, generating oligosaccharides CC with 4-deoxy-alpha-L-erythro-hex-4-enuronosyl groups at their non- CC reducing ends and beta-D-mannuronate at the reducing end. CC -!- Depending on the composition of the substrate, the enzyme produces CC oligosaccharides ranging from two to four residues, with preference CC for shorter products. cf. EC 4.2.2.11. CC -!- Formerly EC 4.2.99.4. DR Q9ZFG9, ALGE7_AZOVI; O50660, ALGL_AZOCH ; C1DP89, ALGL_AZOVD ; DR O52195, ALGL_AZOVI ; Q9ZNB7, ALGL_COBMA ; A6V1P7, ALGL_PSEA7 ; DR B7UUU9, ALGL_PSEA8 ; Q02R18, ALGL_PSEAB ; Q06749, ALGL_PSEAE ; DR Q1I563, ALGL_PSEE4 ; Q4KHY5, ALGL_PSEF5 ; P59786, ALGL_PSEFL ; DR C3KDZ3, ALGL_PSEFS ; A5W8V4, ALGL_PSEP1 ; Q3KHR0, ALGL_PSEPF ; DR B0KGQ9, ALGL_PSEPG ; Q88ND1, ALGL_PSEPK ; B1J479, ALGL_PSEPW ; DR Q887Q5, ALGL_PSESM ; Q9L7P2, ALGL_PSESY ; Q4ZXL0, ALGL_PSEU2 ; DR P39049, ALXM_PHOS4 ; Q59478, ALYA_KLEPN ; Q59639, ALYA_PSEAL ; DR Q06365, ALYP_PSESO ; B2FHL8, PL_STRMK ; //