preferred_name: [(1->4)-beta-D-mannuronosyl](n+1) + GDP + H(+) => [(1->4)-beta-D-mannuronosyl](n) + GDP-alpha-D-mannuronate
preferred_name_lc: [(1->4)-beta-d-mannuronosyl](n+1) + gdp + h(+) => [(1->4)-beta-d-mannuronosyl](n) + gdp-alpha-d-mannuronate
label: [(1->4)-beta-D-mannuronosyl](n+1) + GDP + H(+) => [(1->4)-beta-D-mannuronosyl](n) + GDP-alpha-D-mannuronate
label_lc: [(1->4)-beta-d-mannuronosyl](n+1) + gdp + h(+) => [(1->4)-beta-d-mannuronosyl](n) + gdp-alpha-d-mannuronate