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Information on EC 3.1.1.75 - poly(3-hydroxybutyrate) depolymerase

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EC Tree
     3 Hydrolases
         3.1 Acting on ester bonds
             3.1.1 Carboxylic-ester hydrolases
                3.1.1.75 poly(3-hydroxybutyrate) depolymerase
IUBMB Comments
Reaction also occurs with esters of other short-chain-length (C1-C5) hydroxyalkanoic acids (HA). There are two types of polymers: native (intracellular) granules are amorphous and have an intact surface layer; denatured (extracellular) granules either have no surface layer or a damaged surface layer and are partially crystalline.
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Word Map
The expected taxonomic range for this enzyme is: Bacteria, Eukaryota
Synonyms
phb depolymerase, pha depolymerase, phaz1, phaz7, poly(3-hydroxybutyrate) (phb) depolymerase, p(3hb) depolymerase, mcl-pha depolymerase, phazd1, phbdp, phaase ii, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
[(R)-3-hydroxybutanoate]n + H2O = [(R)-3-hydroxybutanoate]n-x + [(R)-3-hydroxybutanoate]x; x: 1-5
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denatured, extracellular granules either have no surface layer or a damaged surface layer and are partially crystalline; Reaction also occurs with esters of other short-chain-length, C1-C5, hydroxyalkanoic acids, HA. There are two types of polymers: native, intracellular granules are amorphous and have an intact surface layer; x=1-5
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PATHWAY SOURCE
PATHWAYS