Results 181 to 190 of about 6,139 (211)

Hyperthermophilic phosphotriesterases/lactonases for the environment and human health

Environmental Technology, 2010
In the last decades the idea to use enzymes for environmental bioremediation has been more and more proposed and, in the light of this, new solutions have been suggested and detailed studies on some classes of enzymes have been performed. In particular, our attention in the last few years has been focused on the enzymes belonging to the amidohydrolase ...
Mandrich L, Merone L, Manco G
openaire   +4 more sources

Lactonases with oragnophosphatase activity: Structural and evolutionary perspectives

Chemico-Biological Interactions, 2010
Serum paraoxonase (PON1) is well recognized for its ability to hydrolyze arylesters, toxic oxon metabolites of organophosphate insecticides and nerve agents. PON1 is a member of gene family including also PON2 and PON3; however, the later two enzymes have very limited arylesterase and practically no organophosphatase activity.
openaire   +2 more sources

Studies on the enantioselectivity of bacterial lactonases

2022
Owing to their biological significance, increased efforts are being directed towards the production of lactones in optically pure form. One method of synthesis is via a microbial equivalent of the Baeyer-Villiger reaction. This reaction is common in microorganisms possessing a monooxygenase enzyme which is induced as part of the catabolic machinery ...
openaire   +1 more source

Induction of glucose oxidase, catalase, and lactonase in Aspergillus niger

Current Genetics, 1993
The induction of glucose oxidase, catalase, and lactonase activities was studied both in wild-type and in glucose oxidase regulatory and structural mutants of Aspergillus niger. The structural gene for glucose oxidase was isolated and used for Northern analysis and in transformation experiments using various gox mutations.
Witteveen, C.F.B., van der Vondervoort, P.J.I., van den Broeck, H.C., van Engelenburg, F.A.C., de Graaff, L.H., Hillebrand, M.H.B.C., Schaap, P.J., Visser, J.   +7 more
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[6] Catabolism of uronate and aldonate: Lactonases

1970
Publisher Summary In this chapter, the separation of aldonolactonase and 6-phosphogluconolactonase is performed. Aldonolactonase shows hydrolyzing activity against L -dehydroascorbic acid. The procedure for separation described in the chapter is suitable for a large-scale preparation of this enzyme.
Yasuo Kagawa, Norio Shimazono
openaire   +1 more source

Engineering of Extremophilic Phosphotriesterase-Like Lactonases for Biotechnological Applications

2016
Organophosphate compounds, as most pesticides and chemical warfare agents, first appeared in the US after 1930s and became widespread after World War II. At present, enzymatic detoxification of organophosphate compounds represents an important issue worldwide, due to their permanent and excessive use that has led in many places to the contamination of ...
Elena Porzio, Immacolata Del Giudice, Giuseppe Manco   +2 more
openaire   +1 more source

Studies on the glucono-δ-lactonase of Psudomonas fluorescens

Biochimica et Biophysica Acta, 1960
Abstract The first stage of the oxidative metabolism of d -glucose by Pseudomonas fluorescens is the conversion of d -glucopyranose into d -glucono-δ-lactone. This lactone is hydrolysed to gluconic acid by an enzyme found in the soluble fraction of cell-free extracts of the bacterium. the lactonase has been purified a hundredfold and some of its
openaire   +2 more sources

Comparative Studies on Soluble Lactonases

The Journal of Biochemistry, 1962
M, KAWADA, H, TAKIGUCHI, Y, KAGAWA, K, SUZUKI, N, SHIMAZONO   +4 more
openaire   +2 more sources

Further Studies on Microsomal Lactonase

The Journal of Biochemistry, 1961
M, KAWADA, K, YAMADA
openaire   +2 more sources

Triacetate-lactonase

1991
Dietmar Schomburg, Margit Salzmann
openaire   +1 more source