Results 11 to 20 of about 48,930 (267)

Expression ofAspergillus oryzaeα-amylase gene inSaccharomyces cerevisiae [PDF]

open access: yesFEMS Microbiology Letters, 1993
Abstract A fragment containing the full length cDNA from Aspergillus oryzae α-amylase has been amplified by PCR using specific synthetic oligonucleotides. The amplified cDNA was designed to favour its expression in yeast by modifying its upstream untranslated region.
Francisca Randez-Gil, Pascual Sanz
openaire   +1 more source

Encouragement of Enzyme Reaction Utilizing Heat Generation from Ferromagnetic Particles Subjected to an AC Magnetic Field. [PDF]

open access: yesPLoS ONE, 2015
We propose a method of activating an enzyme utilizing heat generation from ferromagnetic particles under an ac magnetic field. We immobilize α-amylase on the surface of ferromagnetic particles and analyze its activity.
Masashi Suzuki   +5 more
doaj   +1 more source

Expression of theStreptomyces griseusα-amylase gene inEscherichia coli [PDF]

open access: yesFEMS Microbiology Letters, 1994
The amy gene of Streptomyces griseus was not expressed in Escherichia coli cells due to the lack of recognition of the amy promoter by the E. coli RNA polymerase, as confirmed by using promoter-probe vectors. The expression of the amy gene in E. coli was detected only when the promoter-less gene was placed under the control of the lacZ promoter and was
T. Vigal, J.F. Martin, J.A. Gil
openaire   +1 more source

Isolation and purification of α-amylase inhibitors and their in vitro and in vivo effects on Tribolium castaneum (Herbst) and Callosobruchus maculatus (F.)

open access: yesJournal of Plant Protection Research, 2020
Plant derived α-amylase inhibitors are proteinaceous molecules that regulate the enzyme activity in plants and also protect plants from insect attack. In the current study, 28 accessions of 19 plant species were screened for their α-amylase inhibitory ...
Ashraf Oukasha Abd El-latif   +3 more
doaj   +1 more source

Synthesis and bioactivities evaluation of oleanolic acid oxime ester derivatives as α-glucosidase and α-amylase inhibitors

open access: yesJournal of Enzyme Inhibition and Medicinal Chemistry, 2022
Different oleanolic acid (OA) oxime ester derivatives (3a-3t) were designed and synthesised to develop inhibitors against α-glucosidase and α-amylase. All the synthesised OA derivatives were evaluated against α-glucosidase and α-amylase in vitro.
Xu-Yang Deng   +9 more
doaj   +1 more source

Suppression of growth defects of α-amylase secretingEscherichia coliby signal sequence fusion [PDF]

open access: yesFEMS Microbiology Letters, 1988
Two fusions of the Bacillus stearothermophilus α-amylase gene (amyS) with lacpoZ′ were constructed. The first, being a transcriptional fusion, placed amyS directly under lac promoter control eliminating interference by the endogenous promoter. IPTG induction of amyS transcription in this construction resulted in liberation of periplasmic proteins and ...
Ilari Suominen   +4 more
openaire   +1 more source

Research progress on enhancement of bacterial α-amylase activity

open access: yesSiliao yanjiu, 2023
α-amylase is an endonuclease that acts on the α-1,4-glucoside bond of starch molecules to reduce starch viscosity. As a commonly used additive in animal feed, α-amylase can make up for the deficiency of animal amylase, accelerate the starch ...
BAI Jing, WANG Jun, LI Mo, SONG Li-li
doaj  

Molecular, Biochemical, and Dietary Regulation Features of α-Amylase in a Carnivorous Crustacean, the Spiny Lobster Panulirus argus. [PDF]

open access: yesPLoS ONE, 2016
Alpha-amylases are ubiquitously distributed throughout microbials, plants and animals. It is widely accepted that omnivorous crustaceans have higher α-amylase activity and number of isoforms than carnivorous, but contradictory results have been obtained ...
Leandro Rodríguez-Viera   +8 more
doaj   +1 more source

Isolation and characterization of α ‐amylase encoding gene in Bacillus amyloliquefaciens PAS

open access: yesIndonesian Journal of Biotechnology, 2021
Amylolytic bacteria are a source of amylase, which is an essential enzyme to support microalgae growth in the bioreactor for microalgae culture. In a previous study, the highest bacterial isolate to hydrolyze amylum (namely PAS) was successfully isolated
Achmad Rodiansyah   +4 more
doaj   +1 more source

Aktivitas Immobilized α-Amylase dan Free α-Amylase dari Zoogloea ramigera ABL 1 dalam Medium Pati Cair dengan Perlakuan Faktor Lingkungan

open access: yesBiota : Jurnal Ilmiah Ilmu-Ilmu Hayati, 2011
Penelitian ini bertujuan mengetahui karakter aktivitas immobilized amylase dan free amylase dari isolat amilolitik Zoogloea ramigera ABL 1 dengan beberapa kondisi lingkungan yang berbeda, seperti suhu, pH, temperatur, dan ion logam.
Endah Retnaningrum, Zukrotun Nafisah
openaire   +1 more source

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