ID   5.1.3.37
DE   mannuronan 5-epimerase.
AN   alginate epimerase.
AN   C(5)-mannuronan epimerase.
AN   mannuronan C-5-epimerase.
CA   [(1->4)-beta-D-mannuronosyl](n) = [alginate](n).
CC   -!- The enzyme epimerizes the C-5 bond in some beta-D-mannuronate
CC       residues in mannuronan, converting them to alpha-L-guluronate
CC       residues, and thus modifying the mannuronan into alginate.
CC   -!- It is found in brown algae and alginate-producing bacterial species
CC       from the Pseudomonas and Azotobacter genera.
DR   Q44494, ALGE1_AZOVI;  Q44495, ALGE2_AZOVI;  Q44496, ALGE3_AZOVI;
DR   Q44493, ALGE4_AZOVI;  Q44492, ALGE5_AZOVI;  Q9ZFH0, ALGE6_AZOVI;
DR   Q9ZFG9, ALGE7_AZOVI;  P70805, ALGG_AZOVI ;  Q51371, ALGG_PSEAE ;
DR   P59828, ALGG_PSEFL ;  Q88NC9, ALGG_PSEPK ;  Q887Q3, ALGG_PSESM ;
//