1YEF:
reference: X-ray structures of a hydrolytic antibody and of complexes elucidate catalytic pathway from substrate binding and transition state stabilization through water attack and product release., Gigant B, Charbonnier JB, Eshhar Z, Green BS, Knossow M, Proc Natl Acad Sci U S A 1997 Jul 22;94(15):7857-61. PMID: 9223277

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