Results 21 to 30 of about 989,780 (312)

Activity-Stability Relationships in Extremophilic Enzymes [PDF]

open access: yesJournal of Biological Chemistry, 2003
Psychrophilic, mesophilic, and thermophilic alpha-amylases have been studied as regards their conformational stability, heat inactivation, irreversible unfolding, activation parameters of the reaction, properties of the enzyme in complex with a transition state analog, and structural permeability.
D'Amico, Salvino   +3 more
openaire   +2 more sources

A new intrinsic thermal parameter for enzymes reveals true temperature optima [PDF]

open access: yes, 2004
Two established thermal properties of enzymes are the Arrhenius activation energy and thermal stability. Arising from anomalies found in the variation of enzyme activity with temperature, a comparison has been made of experimental data for the activity ...
Daniel, Roy M.   +4 more
core   +2 more sources

The Effect of Calcium Alginate Entrapment on the Stability of Novel Lipases from P. Reinekei and P. brenneri

open access: yesTrends in Peptide and Protein Sciences, 2019
The high cost of soluble enzymes can limit their use for commercial and industrial purposes. Immobilization can enhance enzyme reusability, thereby reducing product isolation costs and overcoming this economic barrier.
Priyanka Priyanka   +3 more
doaj   +1 more source

Purification and characterization of cyclodextrin glucanotransferase from alkalophilic Bacillus sp. G1 [PDF]

open access: yes, 2005
A cyclodextrin glucanotransferase (CGTase) was successively purified by ammonium sulphate precipitation, and affinity chromatography on a-CD (epoxy)-Sepharose 6B column. The specific activity of the CGTase was increased approximately 2200-fold, from 8.43
A. Rahman, R   +7 more
core   +1 more source

Characterization of the novel ene reductase Ppo-Er1 from paenibacillus polymyxa [PDF]

open access: yes, 2020
Ene reductases enable the asymmetric hydrogenation of activated alkenes allowing the manufacture of valuable chiral products. The enzymes complement existing metal- and organocatalytic approaches for the stereoselective reduction of activated C=C double ...
Aregger, David   +2 more
core   +1 more source

Enhanced oral absorption of insulin: hydrophobic ion pairing and a self-microemulsifying drug delivery system using a D-optimal mixture design

open access: yesDrug Delivery, 2022
The lipophilicity of a peptide drug can be considerably increased by hydrophobic ion pairing with amphiphilic counterions for successful incorporation into lipid-based formulations.
Yoon Tae Goo   +8 more
doaj   +1 more source

Properties and stabilization of an extracellular α-glucosidase from the extremely thermophilic archaebacteria Thermococcus strain AN 1: enzyme activity at 130°C [PDF]

open access: yes, 1996
An extracellular α-glucosidase from the thermophilic archaebacterium Thermococcus strain AN1 was purified 875-fold in five steps (Hiload Q-Sepharose, phenyl Sepharose, HPHT-hydroxyapatite, gel filtration and Mono Q chromatography) with a yield of 4%.
Daniel, Roy M.   +2 more
core   +2 more sources

Design of surface-active artificial enzyme particles to stabilize Pickering emulsions for high-performance biphasic biocatalysis [PDF]

open access: yes, 2015
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Surface-active artificial enzymes (SAEs) are designed and constructed by a general and novel strategy.
Baciocchi   +39 more
core   +1 more source

Inhibition of an extracellular polygalacturonase from Geotrichum candidum by a proteinaceous inhibitor isolated from lemon fruits [PDF]

open access: yes, 2017
An extracellular polygalacturonase [EC 3.2.1.15], named PG-543, was purified from the culture of Geotrichum candidum IEV 543, a phytopathogenic fungi isolated from infected lemon.
Isla, Maria Ines   +5 more
core   +1 more source

Combined Effects of Ultrasound and Immobilization Protocol on Butyl Acetate Synthesis Catalyzed by CALB

open access: yesMolecules, 2014
It is well established that the performance of lipase B from Candida antarctica (CALB) as catalyst for esterification reactions may be improved by the use of ultrasound technology or by its immobilization on styrene-divinylbenzene beads (MCI-CALB).
Joana S. Alves   +7 more
doaj   +1 more source

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