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Insights into catalytic action mechanism of Pseudomonas mendocina 3121-1 lipase

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67179843%3A_____%2F04%3A00102710" target="_blank" >RIV/67179843:_____/04:00102710 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Insights into catalytic action mechanism of Pseudomonas mendocina 3121-1 lipase

  • Original language description

    The hydrolysis of p-nitrophenyl butyrate catalyzed by Pseudomonas mendocina 3121-1 lipase was strongly affected by guanidine hydrochloride indicating the importance of Arg residue. Since loss of the activity in the presence of urea was negligible, the inactivation could not be attributed to protein denaturation. The enzyme was unaffected by p-chlormercuribenzoic acid (p-CMB), 2-mercaptoethanol and N-ethylmaleimide (NEM) at pH 7.0 indicating that Cys residue was essential neither to catalytic action norto structural features of the lipase. The inactivation by K3Fe(CN)6 implied that another oxidizable amino acid residue could be important. The inactivation by N-ethylmaleimide at pH 9.0 indicated the involvement of His in the catalysis. Phenylmethylsulfonyl fluoride (PMSF) strongly inhibited the enzyme pointing out the essential role of Ser residue

  • Czech name

    Pohled na mechanismus katalýzy lipasy z Pseudomonas mendocina 3121-1

  • Czech description

    Hydrolýza p-nitrofenyl butyrátu katalyzovaná lipasou z Pseudomonas mendocina 3121-1 byla silně ovlivněna guanidin hydrochloridem, ukazujícím podstatný význam argininového zbytku. Protože ztráta aktivity v přítomnosti močoviny byla nevýznamná, inaktivacenemohla být spojována s denaturací proteinu. Enzymová aktivita nebyla ovlivněna kyselinou p-chlormerkuribenzoovou (p-CMB), 2-merkaptoethanolem a N-ethylmaleinimidem (NEM) při pH 7.0, což ukazuje, že cysteinové zbytky nebyly nezbytné ani pro katalytickouaktivaci ani pro strukturální vlastnosti lipasy. Inaktivace působením K3Fe(CN)6 ukázala, že jiný oxidovatelný zbytek aminokyseliny by mohl být důležitý. Inaktivace N-ethylmaleinimidem při pH 9.0 prokázala spoluúčast histidinu v katalýze. Fenylmethylsulfonylchlorid (PMSF) silně inhiboval enzym, což by vysvětlovalo esenciální úlohu serinového zbytku

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CE - Biochemistry

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/KSK4055109" target="_blank" >KSK4055109: Physics, chemistry and informatics for biological, ecological and medicinal applications</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2004

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Enzyme and Microbial Technology

  • ISSN

    0141-0229

  • e-ISSN

  • Volume of the periodical

    34

  • Issue of the periodical within the volume

    -

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    6

  • Pages from-to

    572-577

  • UT code for WoS article

  • EID of the result in the Scopus database