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Structures and HeliQuest results for two other membrane proteins with TM helices. (a) Estrone sulfatase (ES) structure (PDB ID code 1P49). (b) Stannin structure (PDB ID code 1ZZA). (c) HeliQuest result for the cyan helix in ES. (d) HeliQuest result for the yellow helix in ES. (e) HeliQuest result for the TM helix in stannin.
