Biosynthesis of alginate. Epimerisation of D-mannuronic to L-guluronic acid residues in the polymer chain.
D000464:Alginates / Q000096:biosynthesis*; D001395:Azotobacter / Q000201:enzymology; D002118:Calcium; D006863:Hydrogen-Ion Concentration; D012995:Solubility; D014574:Uronic Acids / Q000378:metabolism*
D000464:Alginates; D014574:Uronic Acids; D002118:Calcium