Substrate specificities of bacterial polyhydroxyalkanoate depolymerases and lipases: bacterial lipases hydrolyze poly(omega-hydroxyalkanoates)

Article Abstract:

Study of the substrate specificities of various bacterial extracellular lipases and polyhydroxyalkanoate (PHA) depolymerases revealed that most lipases could hydrolyze omega- hydroxyalkanoic acid polyesters whereas none of the PHA depolymerases could hydrolyze triolein. Degradation of PHA by lipases demonstrates the wide diversity of lipase substrates and further supports the commercial use of PHA due to its broader biodegradation profile.

Analysis, Observations, Enzymes, Bacteria, Lipase, Hydrolysis

---

Polyhydroxyalkanoate degradation is associated with nucleotide accumulation and enhances stress resistance and survival of Pseudomonas oleovorans in natural water microcosms

Article Abstract:

The polyhydroxyalkanoic acid (PHA) depolymerization-minus mutant of Pseudomonas oleovorans was used to evaluate the availability of PHA on the pathogenic bacteria's survival and stress-agent resistance. PHA degradation was concomitant with a rise in adenosine triphosphate and guanosine tetraphosphate levels; the PHA depolymerization-minus strain showed decreased survival compared to the wild-type strain.

Argentina, Statistical Data Included, Environmental aspects, Pseudomonas, Bacteria, Pathogenic, Pathogenic bacteria, Water chemistry

---

Poly(3-hydroxybutyrate) synthesis genes in Azotobacter sp. strain FA8

Article Abstract:

Researchers have isolated the genes responsible for poly(3-hydroxybutyrate) (PHB) synthesis in Azotobacter sp. strain FA8. The genes code for PHB polymerase, beta-ketothiolase and acetoacetyl-coenzyme A reductase. The PHB polymerase can only produce PHB from glucose or octanoate, but not from medium-chain-length hydroxyalkanoates.

Microbial enzymes, Polyhydroxybutyrate, Azotobacter

Similar abstracts:

• Abstracts: Saccharomyces cerevisiae expressing bacterial polyhydroxybutyrate synthase produces poly-3-hydroxybutyrate. The gene cluster for chloramphenicol biosynthesis in Streptomyces venezuelae ISP5230 includes novel shikimate pathway homologues and a monomodular nonribosomal peptide synthetase gene
• Abstracts: Somatic mutations of microsatellite loci in western redcedar (Thuja plicata: Cupressaceae). Heritability of phenolics in Quercus laevis inferred using molecular markers
• Abstracts: The cold shock domain protein LIN-28 controls developmental timing in C. elegans and is regulated by the lin-4 RNA
• Abstracts: A molecular mechanism regulating rhythmic output from the superchiasmatic circadian clock. Posttranslational mechanisms regulate the mammalian circadian clock

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.