Structural data on a bacterial exopolysaccharide produced by a deep-sea Alteromonas macleodii strain

► Structural data of a complex bacterial exopolysaccharide of deep-sea origin are presented. ► This exopolysaccharide, named deepsane, is commercialised in cosmetics. ► Structural similarities with other exopolysaccharide-producing marine Alteromonas strains are reported.