Results 61 to 70 of about 1,097,067 (307)

The Effect of Hydration on Enzyme Activity and Dynamics [PDF]

open access: yes, 2008
Water has long been assumed to be essential for biological function. To understand the molecular basis of the role of water in protein function, several studies have established a correlation between enzyme activity and hydration level. While a threshold
Lopez, Murielle
core  

Covalent immobilization of glucoamylase enzyme onto chemically activated surface of κ-carrageenan

open access: yesBulletin of the National Research Centre, 2019
Background Glucoamylase enzyme is one of the most important enzymes. It catalyzes the hydrolysis of starch into soluble sugars. It was covalently immobilized onto κ-carrageenan gel beads after activation by using polyethylenimine (PEI) followed by ...
Mohamed E. Hassan   +2 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Structural characteristics of the nonallosteric human cytosolic malic enzyme [PDF]

open access: yes, 2017
Human cytosolic NADP(+)-dependent malic enzyme (c-NADP-ME) is neither a cooperative nor an allosteric enzyme, whereas mitochondrial NAD(P)(+)-dependent malic enzyme (m-NAD(P)-ME) is allosterically activated by fumarate.
Hsieh, Ju-Yi;Li, Shao-Yu;Chen, Meng-Chun;Yang, Pai-Chun;Chen, Hui-Yi;Chan, Nei-Li;Liu, Jyung-Hurng;Hung, Hui-Chih   +1 more
core   +1 more source

Recent Trends in Enzyme Inhibition and Activation in Drug Design

open access: yesMolecules, 2020
It is known that enzymes are involved in many pathological conditions, such as inflammation, diabetes, microbial infections, HIV, neoplastic, neglected diseases and others [...]
Athina Geronikaki
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Quantitative and evolutionary global analysis of enzyme reaction mechanisms [PDF]

open access: yes, 2015
The most widely used classification system describing enzyme-catalysed reactions is the Enzyme Commission (EC) number. Understanding enzyme function is important for both fundamental scientific and pharmaceutical reasons.
Nath, Neetika
core  

Ack1: activation and regulation by allostery. [PDF]

open access: yesPLoS ONE, 2013
The non-receptor tyrosine kinase Ack1 belongs to a unique multi-domain protein kinase family, Ack. Ack is the only family of SH3 domain containing kinases to have an SH3 domain following the kinase domain; others have their SH3 domains preceding the ...
Ketan S Gajiwala   +4 more
doaj   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

open access: yesFEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura   +2 more
wiley   +1 more source

Site-specific and time-dependent activation of the endocannabinoid system after transection of long-range projections [PDF]

open access: yes, 2012
Background: After focal neuronal injury the endocannabinioid system becomes activated and protects or harms neurons depending on cannabinoid derivates and receptor subtypes.
Geisslinger, Gerd   +31 more
core   +1 more source

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