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Predicted geometry of the intersubunit disulfide bond between positions 452 and 460 in the pre-fusion MV F model. The protein is shown as secondary structure and colored by subunit. Cysteines at positions 452 and 460 are shown as blue spheres with orange sulfur atoms (A) Side view of the trimer (B) View looking up from the 3HB of HR-B. (C) Close-up view of disulfide bonds with the cysteines shown as sticks
