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Close-up view of the M8VLSL55 L P mutation. (A) Stereoview of M8VL and the interaction between DIR, TyrL49 and SerL55.SerL55 in the M8VL has 6 van der Waals contacts with DIR. (B) Same view of the M8VLSL55P mutant. The proline ring is approximately 4Å from the edge of the TyrL49 ring and makes 10 van der Waals contacts with DIR.
