Kinetics and mechanism of heterogeneous hydrolysis of poly[(R)-3-hydroxybutyrate]fielm by PHA depolymerases (Record no. 47066)

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control field MX-MdCICY
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control field 20250625153911.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-12861
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Title Kinetics and mechanism of heterogeneous hydrolysis of poly[(R)-3-hydroxybutyrate]fielm by PHA depolymerases
490 0# - SERIES STATEMENT
Volume/sequential designation Int. J. Biol. Macromol., 15(6), p.361-366, 1993
520 3# - SUMMARY, ETC.
Summary, etc. The kinetics and mechanism of enzymatic degradation on the surface of poly[(R)-3-hydroxybutyrate](PC(R)-3HB]) jilm have been studied using three types of extracellular poly(hydroxyalkanoate)(PHA)depolymerases from Alcaligenes faecalis, Pseudomonas pickettii and Comamonas testosteroni. The monomer and dimer of 3-hydroxybutyric acid were produced during the course of the enzymatic degradation of PC(R)-3HB]film, and the rate of production was determined by monitoring the increase in absorbance at 210 nm on a spectrophotometer. The rate of enzymatic degradation increased to a maximum value with the concentration of PHA depolymerase, followed by a gradual decrease. The kinetic data were accountedfor in terms of a heterogeneous enzymatic reaction, involving enzymatic degradation on the surface of PC(R)-3HB]jilm via two steps of adsorption and hydrolysis by a PHA depolymerase with binding and catalytic domains. The kinetic results suggest that the properties oj-the catalytic domains are very similar among the three PHA depolymerases, but that those of the binding domains are strongly dependent on the type of depolymerase.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element ENZYMATIC DEGRADATION
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element PHA DEPOLYMERASES
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element POLY[(R)-3-HYDROXYBUTYRATE]
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element HETEROGENEOUS HYDROLYSIS
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element KINETIC MODEL
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Mukai, K.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Yamada, K.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Doit, Y.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/13VXs7PmxOF3YZjJ9xswQ2fgDIC6LDAnA/view?usp=drivesdk">https://drive.google.com/file/d/13VXs7PmxOF3YZjJ9xswQ2fgDIC6LDAnA/view?usp=drivesdk</a>
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-12861 25.06.2025 25.06.2025 Documentos solicitados