Assertion: phenylalanine's effect | /r/HasProperty | registered on third water
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Source sentences:
text: D139E assumes an orientation that positions the carboxylate group away from the metal; the effect of this is registered on the third water, which was displaced by ethylene glycol (used as the cryoprotectant) and moved 2 Å from its normal location to prevent a steric clash with glutamate.