SCHIFF-BASES OF PYRIDOXAL 5'-PHOSPHATE AND POLYPEPTIDES CONTAINING L-LYSINE - A KINETIC-STUDY

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dc.contributor.authorGarcia del Vado, M.A.
dc.contributor.authorEchevarria, G.R.
dc.contributor.authorGarcía Blanco, F.
dc.contributor.authorSantos Blanco, J.G.
dc.contributor.authorBlázquez, M.
dc.contributor.authorSevilla, J.M.
dc.contributor.authorDomínguez, M.
dc.date.accessioned2024-01-10T13:17:25Z
dc.date.available2024-01-10T13:17:25Z
dc.date.issued1991
dc.description.abstractThe apparent rate constants of formation (k1) and hydrolysis (k2), and the apparent equilibrium constant (K(pH)) of the Schiff bases of pyridoxal 5'-phosphate and poly-L-lysine in different degrees of polymerization have been determined as a function of pH at 25-degrees-C and a constant ionic strength of 0.1. The Schiff bases of PLP and L-lysine and L-alanine copolymers were also studied under the same conditions. The k1 and K(pH) values obtained in every instance were larger than those reported for Schiff bases of PLP and primary amines. The absorption bands of the Schiff bases formed coincided with those obtained for the Schiff bases of PLP and primary amines in low-polarity media. These facts reveal the occurrence of effects that cannot be ascribed to the solvent and that influence intramolecular acid-base catalysis in the formation of the Schiff bases examined.
dc.format.extent8 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1016/0304-5102(91)80095-K
dc.identifier.issn0304-5102
dc.identifier.urihttps://doi.org/10.1016/0304-5102(91)80095-K
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/78661
dc.identifier.wosidWOS:A1991GH16600015
dc.information.autorucQuímica;Santos JG;S/I;98813
dc.issue.numero3
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final386
dc.pagina.inicio379
dc.publisherELSEVIER SCIENCE BV
dc.revistaJOURNAL OF MOLECULAR CATALYSIS
dc.rightsacceso restringido
dc.subjectGLYCOGEN PHOSPHORYLASE-B
dc.subjectNORMAL-HEXYLAMINE
dc.subjectABSORPTION-SPECTRA
dc.subjectPHOSPHATE SITE
dc.subjectWATER-DIOXANE
dc.subjectEQUILIBRIA
dc.subjectCATALYSIS
dc.subjectPOLARITY
dc.subjectBINDING
dc.subject.ods03 Good Health and Well-being
dc.subject.ods12 Responsible Consumption and Production
dc.subject.odspa03 Salud y bienestar
dc.subject.odspa12 Producción y consumo responsable
dc.titleSCHIFF-BASES OF PYRIDOXAL 5'-PHOSPHATE AND POLYPEPTIDES CONTAINING L-LYSINE - A KINETIC-STUDY
dc.typeartículo
dc.volumen68
sipa.codpersvinculados98813
sipa.indexWOS
sipa.trazabilidadCarga SIPA;09-01-2024
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