Poly(3-hydroxybutyrate) depolymerase


Poly(3-hydroxybutyrate) depolymerase

In enzymology, a poly(3-hydroxybutyrate) depolymerase (EC number|3.1.1.75) is an enzyme that catalyzes the chemical reaction

:poly [(R)-3-hydroxybutanoate] n + H2O ightleftharpoons poly [(R)-3-hydroxybutanoate] n-x + poly [(R)-3-hydroxybutanoate] x; x ightleftharpoons 1-5

Thus, the two substrates of this enzyme are [poly [(R)-3-hydroxybutanoate] n] and H2O, whereas its two products are [poly [(R)-3-hydroxybutanoate] n-x] and [poly [(R)-3-hydroxybutanoate] x; x] .

This enzyme belongs to the family of hydrolases, specifically those acting on carboxylic ester bonds. The systematic name of this enzyme class is poly [(R)-3-hydroxybutanoate] hydrolase. Other names in common use include PHB depolymerase, poly(3HB) depolymerase, poly [(R)-hydroxyalkanoic acid] depolymerase, poly(HA) depolymerase, poly(HASCL) depolymerase, and poly [(R)-3-hydroxybutyrate] hydrolase.

tructural studies

As of late 2007, two structures have been solved for this class of enzymes, with PDB accession codes PDB link|2D80 and PDB link|2D81.

References

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External links

Gene Ontology (GO) codes


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Look at other dictionaries:

  • List of EC numbers (EC 3) — This list contains a list of EC numbers for the third group, EC 3, hydrolases, placed in numerical order as determined by the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology.EC 3.1: Acting on Ester BondsEC… …   Wikipedia

  • Hydrolase — Cristal de lysozyme Les hydrolases constituent une classe d enzymes qui catalysent les réactions d hydrolyse de molécules suivant la réaction générale : R R + H2O ⇌ R OH + R H On y trouve par exemple les estérases, qui hydrolysent les …   Wikipédia en Français

  • EC 3.1 — Le groupe EC3.1 est un groupe d hydrolases rassemblant les estérases, c est à dire les enzymes catalysant la réaction générale : R O R + H2O ⇌ R OH + R OH où R représente un acide quelconque et R son substrat. En fonction du milieu, l ester… …   Wikipédia en Français


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