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dc.contributor.authorMora-Gamboa, María P. C.
dc.contributor.authorFerrucho-Calle, María C.
dc.contributor.authorLeidy D. Ardila-Leal, Leidy D
dc.contributor.authorRojas-Ojeda, Lina M
dc.contributor.authorGalindo, Johan F
dc.contributor.authorPoutou-Piñales, Raúl A
dc.contributor.authorPedroza-Rodríguez, Aura M
dc.contributor.authorQuevedo-Hidalgo, Balkys E
dc.coverage.spatialColombiaen_US
dc.date.accessioned2026-03-09T14:06:59Z
dc.date.available2026-03-09T14:06:59Z
dc.date.issued2023
dc.identifier.citation4en_US
dc.identifier.issn1420-3049en_US
dc.identifier.urihttps://repositorioinstitucional.ufpso.edu.co/xmlui/handle/20.500.14167/6145
dc.description.abstractLas lacasas (E.C. 1.10.3.2) son glicoproteínas ampliamente distribuidas en la naturaleza. Su conformación estructural incluye tres sitios de cobre en su centro catalítico, responsables de facilitar la oxidación del sustrato, generando H₂O en lugar de H₂O₂. Los resultados de la medición de la actividad de lacasa (UL−1) pueden variar según el tipo de lacasa, el tampón, los mediadores redox y los sustratos empleados. El objetivo fue seleccionar las mejores condiciones para el ensayo de la actividad de las lacasas rGILCC 1 y rPOXA 1B. Tras ensayos estadísticos secuenciales, la dinámica molecular demostró respaldar este proceso, y nuestro objetivo fue recopilar información valiosa sobre la posible aplicación de estas enzimas en la degradación de nuevos sustratos con implicaciones ambientales negativas. El tratamiento con tampón citrato T2 (CB T2) (pH 3,0 ± 0,2; λ420 nm, 2 mM ABTS) tuvo los resultados más favorables, con 7,315 ± 0,131 UL−1 para rGILCC 1 y 5291,665 ± 45,83 UL−1 para rPOXA 1B. El uso de tampón citrato aumentó la afinidad enzimática por ABTS, ya que se produjeron valores de Km más bajos para ambas enzimas (1,49 × 10−2 mM para rGILCC 1 y 3,72 × 10−2 mM para rPOXA 1B) en comparación con los obtenidos en tampón acetato (5,36 × 10−2 mM para rGILCC 1 y 1,72 mM para rPOXA 1B). La dinámica molecular de GILCC 1–ABTS y POXA 1B–ABTS mostró un comportamiento estable, con valores de desviación cuadrática media (RMSD) no superiores a 2,0 Å. Las actividades enzimáticas (rGILCC 1 y rPOXA 1B) y las interacciones del modelo 3D con ABTS (GILCC 1–ABTS y POXA 1B–ABTS) se vieron fuertemente influenciadas por el pH, la longitud de onda, los iones y la concentración de ABTS, lo cual se vio respaldado por estudios computacionales que identificaron los residuos estabilizadores y las interacciones. La integración de los enfoques experimentales y computacionales permitió comprender en profundidad las interacciones enzima-sustrato, lo que ofrece posibles aplicaciones en el tratamiento de sustratos ambientales.en_US
dc.language.isoengen_US
dc.relationhttps://www.mdpi.com/1420-3049/28/21/7263en_US
dc.titleStatistical Improvement of rGILCC 1 and rPOXA 1B Laccases Activity Assay Conditions Supported by Molecular Dynamicsen_US
dc.title.translatedMejora estadística de las condiciones de ensayo de la actividad de las lacasas rGILCC 1 y rPOXA 1B respaldadas por dinámica molecularen_US
dc.contributor.cvlac0001884474en_US
dc.contributor.cvlac0000151585en_US
dc.contributor.cvlac0000905666en_US
dc.contributor.cvlac0000008613en_US
dc.contributor.cvlac0000238708en_US
dc.contributor.cvlac0000162655en_US
dc.contributor.googlescholariJPqJ24AAAAJen_US
dc.contributor.googlescholarogcTULkAAAAJ&hlen_US
dc.contributor.googlescholarIkYUwAAAAJ&hlen_US
dc.contributor.googlescholarnM4IezMAAAAJ&hlen_US
dc.contributor.googlescholarEyf5YAAAAJ&hlen_US
dc.contributor.orcid0000-0003-2953-0817en_US
dc.contributor.orcid0000-0001-8841-2357en_US
dc.contributor.orcid0000-0002-9673-4054en_US
dc.contributor.orcid0000-0002-9875-2221en_US
dc.contributor.researchgateLeidy-Ardila-Lealen_US
dc.contributor.researchgateJohan-Galindoen_US
dc.contributor.researchgateRaul-Poutou-Pinalesen_US
dc.contributor.researchgateAura-Pedroza-Rodriguezen_US
dc.contributor.researchgateBalkys-Quevedo-Hidalgoen_US
dc.contributor.scopus26641504000en_US
dc.contributor.scopus35520079800en_US
dc.description.abstractenglishLaccases (E.C. 1.10.3.2) are glycoproteins widely distributed in nature. Their structural conformation includes three copper sites in their catalytic center, which are responsible for facilitating substrate oxidation, leading to the generation of H2O instead of H2O2. The measurement of laccase activity (UL−1) results may vary depending on the type of laccase, buffer, redox mediators, and substrates employed. The aim was to select the best conditions for rGILCC 1 and rPOXA 1B laccases activity assay. After sequential statistical assays, the molecular dynamics proved to support this process, and we aimed to accumulate valuable insights into the potential application of these enzymes for the degradation of novel substrates with negative environmental implications. Citrate buffer treatment T2 (CB T2) (pH 3.0 ± 0.2; λ420nm, 2 mM ABTS) had the most favorable results, with 7.315 ± 0.131 UL−1 for rGILCC 1 and 5291.665 ± 45.83 UL−1 for rPOXA 1B. The use of citrate buffer increased the enzyme affinity for ABTS since lower Km values occurred for both enzymes (1.49 × 10−2 mM for rGILCC 1 and 3.72 × 10−2 mM for rPOXA 1B) compared to those obtained in acetate buffer (5.36 × 10−2 mM for rGILCC 1 and 1.72 mM for rPOXA 1B). The molecular dynamics of GILCC 1–ABTS and POXA 1B–ABTS showed stable behavior, with root mean square deviation (RMSD) values not exceeding 2.0 Å. Enzyme activities (rGILCC 1 and rPOXA 1B) and 3D model–ABTS interactions (GILCC 1–ABTS and POXA 1B–ABTS) were under the strong influence of pH, wavelength, ions, and ABTS concentration, supported by computational studies identifying the stabilizing residues and interactions. Integration of the experimental and computational approaches yielded a comprehensive understanding of enzyme–substrate interactions, offering potential applications in environmental substrate treatments.en_US
dc.subject.proposalTampón de acetato y citrato; lacasas; acoplamiento molecular y dinámicaen_US
dc.subject.keywordsAcetate and citrate buffer; laccases; molecular docking and dynamicsen_US
dc.publisher.facultyFacultad ciencias agrarias y del ambienteen_US
dc.type.redcolhttp://purl.org/redcol/resource_type/ARTen_US
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dc.identifier.DOI10.3390/molecules28217263en_US


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