Results 81 to 90 of about 978,452 (311)

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Peptide synthesis by recombinant Fasciola hepatica cathepsin L1 [PDF]

, 2006
Synthesis of the tripeptide Z-Phe-Arg-SerNH2 has been accomplished by a recombinant cysteine protease, cathepsin L1 from liver fluke (Fasciola hepatica), using Z-Phe-Arg-OMe as acyl acceptor and SerNH2 as nucleophile in 0.1 M ammonium acetate pH 9.0–12.5%
Ciarán Ó'Fágáin, Collins, Dalton, Deborah M. Ruth, Dowd, Dowd, Fujishima, Gillian McMahon, Haensler, Jakubke, Lozano, Mort, Ménard, Sewald, Stehle, Turk, Zhou   +16 more
core   +1 more source

Tau acetylation at K331 has limited impact on tau pathology in vivo

FEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto, Yukio Matsuba, Mika Takahashi, Takaomi C. Saido   +3 more
wiley   +1 more source

Engineering a Mesoporous Silicon Nanoparticle Cage to Enhance Performance of a Phosphotriesterase Enzyme for Degradation of VX Nerve Agent

Advanced Science
The organophosphate (OP)‐hydrolyzing enzyme phosphotriesterase (PTE, variant L7ep‐3a) immobilized within a partially oxidized mesoporous silicon nanoparticle cage is synthesized and the catalytic performance of the enzyme@nanoparticle construct for ...
Yi‐Sheng Lu, Eduardo Reynoso Moreno, Yubin Huang, Ruhan Fan, Ashley T. Tucker, Linnzi K. Wright, Ronald A. Evans, Brooke M. Ahern, Donald E. Owens, Stephen A. Chappell, Dale J. Christensen, John Dresios, Michael J. Sailor   +12 more
doaj   +1 more source

Investigation of factors affecting xylanase activity from Trichoderma harzianum 1073 D3

Brazilian Archives of Biology and Technology, 2005
In this study, some physiological conditions affecting the activity of xylanase enzyme produced from Trichoderma harzianum 1073 D3 were determined. In addition, stabilization of pH and temperature in liquid and semi-solid state cultivation media were ...
Seyis Isil, Aksoz Nilufer
doaj   +1 more source

Cold Adaptation of a Mesophilic Subtilisin-like Protease by Laboratory Evolution [PDF]

, 2000
Enzymes isolated from organisms native to cold environments generally exhibit higher catalytic efficiency at low temperatures and greater thermosensitivity than their mesophilic counterparts.
Arnold, Frances H., Miyazaki, Kentaro, Wintrode, Patrick L.   +2 more
core   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Amplified biochemical oscillations in cellular systems

, 2006
We describe a mechanism for pronounced biochemical oscillations, relevant to microscopic systems, such as the intracellular environment. This mechanism operates for reaction schemes which, when modeled using deterministic rate equations, fail to exhibit ...
A. Goldbeter, A. J. McKane, A. J. McKane, A. J. McKane, B. Alberts, B. Hess, B. Teusink, D. Bell-Pedersen, D. T. Gillespie, E. E. Sel’kov, E. Renshaw, G. Kurosawa, G. von Dassow, H. Goldstein, H. Li, J. B. Hansen, J. D. Nagy, M. Akashi, M. F. Madsen, M. Falcke, M. Falcke, M. Nakajima, M. O. Stefanini, M. S. Bartlett, N. G. Van Kampen, P. L. Lakin-Thomas, P. Smolen, R. M. Nisbet, T. J. Newman, U. Kummer, Z. Hou   +30 more
core   +1 more source

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

FEBS 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, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

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

FEBS 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