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n butyric acid/dental caries

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Crystallographic structures of ribonuclease S variants with nonpolar substitution at position 13: packing and cavities.

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Seven hydrophobic residues ranging in size from glycine to phenylalanine have been substituted for the wild-type methionine residue at position 13 in a 15-residue truncated version (S15) of S-peptide, the small component of ribonuclease S. Complexes of both S-15 and the seven variants with S-protein

Synthesis, characterization and photodynamic activity of amino-substituted hypocrellin derivatives.

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Three new hypocrellin derivatives, amino- or amino acid-substituted on the side ring of hypocrellin B (HB), were synthesized by the reactions of HB with 3-methoxypropylamine, 6-aminohexanoic acid and gamma-amino-n-butyric acid, respectively. The structures of these compounds were characterized with

A new approach to possible substrate binding mechanisms for nitrile hydratase.

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We combined normal mode analysis (NMA) with cavity calculations as a method to get more insight into static crystal structures. We used nitrile hydratase (NHase) as a case study, and the crystal structure of a complex of Pseudonocardia thermophila NHase (1UGP) with n-butyric acid was chosen as a

Kinetic and structural studies on roles of the serine ligand and a strictly conserved tyrosine residue in nitrile hydratase.

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Nitrile hydratases (NHase), which catalyze the hydration of nitriles to amides, have an unusual Fe(3+) or Co(3+) center with two modified Cys ligands: cysteine sulfininate (Cys-SO(2) (-)) and either cysteine sulfenic acid or cysteine sulfenate [Cys-SO(H)]. Two catalytic mechanisms have been
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