Structure, Oligomerization and Activity Modulation in N-Ribohydrolases

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Abstract

Enzymes catalyzing the hydrolysis of the N-glycosidic bond in nucleosides and other ri-bosides (N-ribohydrolases, NHs) with diverse substrate specificities are found in all kingdoms of life. While the overall NH fold is highly conserved, limited substitutions and insertions can account for differences in substrate selection, catalytic efficiency, and distinct structural features. The NH structural module is also employed in monomeric proteins devoid of enzymatic activity with different physiological roles. The homo-oligomeric quaternary structure of active NHs parallels the different catalytic strategies used by each isozyme, while providing a buttressing effect to maintain the active site geometry and allow the conformational changes required for catalysis. The unique features of the NH catalytic strategy and structure make these proteins attractive targets for diverse therapeutic goals in different diseases.

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Degano, M. (2022, March 1). Structure, Oligomerization and Activity Modulation in N-Ribohydrolases. International Journal of Molecular Sciences. MDPI. https://doi.org/10.3390/ijms23052576

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