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Structural and Enzymatic Characterization of a Nucleoside Diphosphate Sugar Hydrolase from Bdellovibrio bacteriovorus
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Structural and Enzymatic Characterization of a Nucleoside Diphosphate Sugar Hydrolase from Bdellovibrio bacteriovorus
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Structural and Enzymatic Characterization of a Nucleoside Diphosphate Sugar Hydrolase from Bdellovibrio bacteriovorus
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Journal Article
Structural and Enzymatic Characterization of a Nucleoside Diphosphate Sugar Hydrolase from Bdellovibrio bacteriovorus
2015
Overview
Given the broad range of substrates hydrolyzed by Nudix (nucleoside diphosphate linked to X) enzymes, identification of sequence and structural elements that correctly predict a Nudix substrate or characterize a family is key to correctly annotate the myriad of Nudix enzymes. Here, we present the structure determination and characterization of Bd3179 -- a Nudix hydrolase from Bdellovibrio bacteriovorus-that we show localized in the periplasmic space of this obligate Gram-negative predator. We demonstrate that the enzyme is a nucleoside diphosphate sugar hydrolase (NDPSase) and has a high degree of sequence and structural similarity to a canonical ADP-ribose hydrolase and to a nucleoside diphosphate sugar hydrolase (1.4 and 1.3 Å Cα RMSD respectively). Examination of the structural elements conserved in both types of enzymes confirms that an aspartate-X-lysine motif on the C-terminal helix of the α-β-α NDPSase fold differentiates NDPSases from ADPRases.
Publisher
Public Library of Science,Public Library of Science (PLoS)
Subject
/ Bacterial Proteins - chemistry
/ Bacterial Proteins - genetics
/ Bacterial Proteins - metabolism
/ Biofilms
/ Cloning
/ E coli
/ Enzymes
/ Lysine
/ Medicine
/ Nucleoside Diphosphate Sugars - metabolism
/ Pyrophosphatases - chemistry
/ Pyrophosphatases - metabolism
/ Ribose
/ Science & Technology - Other Topics
/ Sequence Homology, Amino Acid
/ Sugar
