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Abstract:

Unraveling the structure of lectin-carbohydrate complexes is vital for understanding key biological recognition processes and development of glycomimetic drugs. Molecular Docking application to predict them is challenging due to their low affinity, hydrophilic nature and ligand conformational diversity. In the last decade several strategies, such as the inclusion of glycan conformation specific scoring functions or our developed solvent-site biased method, have improved carbohydrate docking performance but significant challenges remain, in particular, those related to receptor conformational diversity. In the present work we have analyzed conventional and solvent-site biased autodock4 performance concerning receptor conformational diversity as derived from different crystal structures (apo and holo), Molecular Dynamics snapshots and Homology-based models, for 14 different lectin-monosaccharide complexes. Our results show that both conventional and biased docking yield accurate lectin-monosaccharide complexes, starting from either apo or homology-based structures, even when only moderate (45%) sequence identity templates are available. An essential element for success is a proper combination of a middle-sized (10-100 structures) conformational ensemble, derived either from Molecular dynamics or multiple homology model building. Consistent with our previous works, results show that solvent-site biased methods improve overall performance, but that results are still highly system dependent. Finally, our results also show that docking can select the correct receptor structure within the ensemble, underscoring the relevance of joint evaluation of both ligand pose and receptor conformation. © The Author(s) 2018.

Registro:

Documento: Artículo
Título:An efficient use of X-ray information, homology modeling, molecular dynamics and knowledge-based docking techniques to predict protein-monosaccharide complexes
Autor:Blanco Capurro, J.I.; Di Paola, M.; Gamarra, M.D.; Martí, M.A.; Modenutti, C.P.
Filiación:Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Intendente Guiraldes 2160, Ciudad Autónoma de Buenos Aires, C1428EGA, Argentina
Instituto de Química Biológica, Facultad de Ciencias Exactas y Naturales (IQUIBICEN), CONICET, Ciudad Universitaria, Intendente Guiraldes 2160, Ciudad Autónoma de Buenos Aires, C1428EGA, Argentina
Palabras clave:carbohydrates; docking; homology-modeling; lectin; molecular dynamics
Año:2018
Volumen:29
Número:2
Página de inicio:124
Página de fin:136
DOI: http://dx.doi.org/10.1093/glycob/cwy102
Título revista:Glycobiology
Título revista abreviado:Glycobiology
ISSN:09596658
CODEN:GLYCE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09596658_v29_n2_p124_BlancoCapurro

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Citas:

---------- APA ----------
Blanco Capurro, J.I., Di Paola, M., Gamarra, M.D., Martí, M.A. & Modenutti, C.P. (2018) . An efficient use of X-ray information, homology modeling, molecular dynamics and knowledge-based docking techniques to predict protein-monosaccharide complexes. Glycobiology, 29(2), 124-136.
http://dx.doi.org/10.1093/glycob/cwy102
---------- CHICAGO ----------
Blanco Capurro, J.I., Di Paola, M., Gamarra, M.D., Martí, M.A., Modenutti, C.P. "An efficient use of X-ray information, homology modeling, molecular dynamics and knowledge-based docking techniques to predict protein-monosaccharide complexes" . Glycobiology 29, no. 2 (2018) : 124-136.
http://dx.doi.org/10.1093/glycob/cwy102
---------- MLA ----------
Blanco Capurro, J.I., Di Paola, M., Gamarra, M.D., Martí, M.A., Modenutti, C.P. "An efficient use of X-ray information, homology modeling, molecular dynamics and knowledge-based docking techniques to predict protein-monosaccharide complexes" . Glycobiology, vol. 29, no. 2, 2018, pp. 124-136.
http://dx.doi.org/10.1093/glycob/cwy102
---------- VANCOUVER ----------
Blanco Capurro, J.I., Di Paola, M., Gamarra, M.D., Martí, M.A., Modenutti, C.P. An efficient use of X-ray information, homology modeling, molecular dynamics and knowledge-based docking techniques to predict protein-monosaccharide complexes. Glycobiology. 2018;29(2):124-136.
http://dx.doi.org/10.1093/glycob/cwy102