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Título: | Solvents derived from glycerol modify classical regioselectivity in the enzymatic synthesis of disaccharides with Biolacta β-galactosidase |
Autor: | Pérez-Sánchez, María; Sandoval, Manuel; Cortés Cabrera, Álvaro CSIC ORCID; García-Marín, Héctor CSIC; Sinisterra, José Vicente; García, José I. CSIC ORCID ; Hernáiz, María J. | Fecha de publicación: | 2011 | Editor: | Royal Society of Chemistry (UK) | Citación: | Green Chemistry 13(10): 2810- 2817 (2011) | Resumen: | Green solvents made from glycerol change the classical regioselectivity of Biolacta No 5 β-galactosidase, from β(1→4) to β(1→6) linkages when a 2 M concentration was used. In order to explain these results, the non-proteic compounds present in the Biolacta preparation were separated by precipitation with ammonium sulfate and the remaining protein extract was used to set reactions with appropriate organic solvents to find that the regioselectivity towards the β(1→6) isomer is retained. According to proteomic analysis, a 98% homology between Streptococcus pneumoniae and Biolacta β-galactosidase preparation was found. With these data, molecular modelling was done which predicts a tridimensional interaction in the enzyme active site with the donor (GlcNAc) and the water-solvent mixture which explains this phenomenon. © 2011 The Royal Society of Chemistry. | Versión del editor: | http://dx.doi.org/10.1039/c1gc15266a | URI: | http://hdl.handle.net/10261/54091 | DOI: | 10.1039/c1gc15266a | Identificadores: | issn: 1463-9262 e-issn: 1463-9270 |
Aparece en las colecciones: | (ICMA) Artículos (CBM) Artículos |
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