1w21
From Proteopedia
STRUCTURE OF NEURAMINIDASE FROM ENGLISH DUCK SUBTYPE N6 COMPLEXED WITH 30 MM SIALIC ACID (NANA, NEU5AC), CRYSTAL SOAKED FOR 43 HOURS AT 291 K.
About this Structure
1w21 is a 4 chain structure with sequence from Influenza a virus. Full crystallographic information is available from OCA.