5c7q

Publication Abstract from PubMed

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 A Calpha 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 alpha-beta-alpha NDPSase fold differentiates NDPSases from ADPRases.

Structural and Enzymatic Characterization of a Nucleoside Diphosphate Sugar Hydrolase from Bdellovibrio bacteriovorus.,de la Pena AH, Suarez A, Duong-Ly KC, Schoeffield AJ, Pizarro-Dupuy MA, Zarr M, Pineiro SA, Amzel LM, Gabelli SB PLoS One. 2015 Nov 2;10(11):e0141716. doi: 10.1371/journal.pone.0141716., eCollection 2015. PMID:26524597^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.