Structural elucidation of the repeat unit in highly branched acidic exopolysaccharides produced by nitrogen fixing Burkholderia

Leticia F Hallack2,3, Daniel S Passos2,3, Katherine A Mattos3, Orlando A Agrellos3, Christopher Jones4, Lucia Mendonca-Previato1,3, Jose O Previato3, and Adriane R Todeschini3 3Instituto de Biofisica Carlos Chagas Filho, Centro de Ciencias da Saude, Bloco G, Universidade Federal do Rio de Janeiro, 21944-970, Cidade Universitaria, Ilha do Fundao, Rio de Janeiro, RJ, Brazil; and 4Laboratory for Molecular Structure, NIBSC, Herts EN6 3QG, UK