HEADER MEMBRANE PROTEIN 31-DEC-69 6IVW TITLE Crystal structure of a bacterial Bestrophin homolog from Klebsiella TITLE 2 pneumoniae with a mutation D269A COMPND MOL_ID: 1; COMPND 2 MOLECULE: Bestrophin homolog; COMPND 3 CHAIN: A, B, C, D, E; COMPND 4 MUTATION: YES; COMPND 5 ENGINEERED: YES;