5lw3 is a 1 chain structure with sequence from Azotobacter vinelandii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
ALGE6_AZOVI Converts beta-D-mannuronic acid (M) to alpha-L-guluronic acid (G), producing a polymer with gel-forming capacity, required for the formation of the cyst coat.