Results 31 to 40 of about 183,535 (259)

A novel RRGW derived peptide is a promising inhibitor of BoNT/A

open access: yesJournal of Enzyme Inhibition and Medicinal Chemistry, 2023
Clostridium botulinum neurotoxin type A (BoNT/A) is one of the most potent biotoxins ever known. Its entry into neurons could block vesicle exocytosis to abolish the release of neurotransmitters from nerve terminals, thus leading to muscle paralysis ...
Wantong Ma   +10 more
doaj   +1 more source

Binding of κ-Conotoxin-PVIIA to Open and Closed Shaker K-Channels Are Differentially Affected by the Ionic Strength

open access: yesMarine Drugs, 2020
κ-Conotoxin-PVIIA (κ-PVIIA) is a potassium-channel blocking peptide from the venom of the fish-hunting snail, Conus purpurascens, which is essential for quick prey’s excitotoxic immobilization.
David Naranjo, Ignacio Díaz-Franulic
doaj   +1 more source

Human Peptides α-Defensin-1 and -5 Inhibit Pertussis Toxin

open access: yesToxins, 2021
Bordetella pertussis causes the severe childhood disease whooping cough, by releasing several toxins, including pertussis toxin (PT) as a major virulence factor.
Carolin Kling   +3 more
doaj   +1 more source

Purification and Characterization of JZTx-14, a Potent Antagonist of Mammalian and Prokaryotic Voltage-Gated Sodium Channels

open access: yesToxins, 2018
Exploring the interaction of ligands with voltage-gated sodium channels (NaVs) has advanced our understanding of their pharmacology. Herein, we report the purification and characterization of a novel non-selective mammalian and bacterial NaVs toxin, JZTx-
Jie Zhang   +6 more
doaj   +1 more source

Targeting MCF-7 Cell Line by Listeriolysin O Pore Forming Toxin Fusion with AHNP Targeted Peptide

open access: yesAdvanced Biomedical Research, 2019
Background: Tumor-targeting peptides are attracting subjects in cancer therapy. These peptides, which are widely studied, deliver therapeutic agents to the specific sites of tumors.
Gholamreza Fotoohi-Ardakani   +4 more
doaj   +1 more source

Toxin diversity revealed by a transcriptomic study of Ornithoctonus huwena. [PDF]

open access: yesPLoS ONE, 2014
Spider venom comprises a mixture of compounds with diverse biological activities, which are used to capture prey and defend against predators. The peptide components bind a broad range of cellular targets with high affinity and selectivity, and appear to
Yiya Zhang   +10 more
doaj   +1 more source

Biologically Active Peptides in Physalia Toxin.

open access: yesExperimental Biology and Medicine, 1961
Summary and conclusionsThe crude toxin of Physalia nematocysts withstands lyophilization without significant loss of toxicity. Physalia toxin may be separated into component peptides by one-dimensional chromatography in 80% aqueous n-propanol. Each of the resultant peptides retains considerable toxicity for the fiddler crab, Uca pugilator.
C E, LANE, B W, COURSEN, K, HINES
openaire   +2 more sources

Peptide-Conjugated Pterins as Inhibitors of Ricin Toxin A [PDF]

open access: yesJournal of Medicinal Chemistry, 2012
Several 7-peptide-substituted pterins were synthesized and tested as competitive active-site inhibitors of ricin toxin A (RTA). Focus began on dipeptide conjugates, and these results further guided the construction of several tripeptide conjugates. The binding of these compounds to RTA was studied via a luminescence-based kinetic assay, as well as ...
Ryota, Saito   +8 more
openaire   +2 more sources

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

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

open access: yesFEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

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