Title : A combined quantum mechanical and molecular mechanical study of the reaction mechanism and alpha-amino acidity in alanine racemase.

Pub. Date : 2006 Dec 20

PMID : 17165790






1 Functional Relationships(s)
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1 The present study shows that the enhancement of carbon acidity of alpha-amino acids by the cofactor pyridoxal 5"-phosphate (PLP) with an unusual, unprotonated pyridine is mainly due to solvation effects, in contrast to the intrinsic electron-withdrawing stabilization by the pyridinium ion to form a quinonoid intermediate. quinonoid pyridoxal phosphatase Homo sapiens