Results 71 to 80 of about 8,032 (242)

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

open access: yesAdvanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen   +5 more
wiley   +1 more source

Evidence for a novel Chlorella virus-encoded alginate lyase [PDF]

open access: yesFEMS Microbiology Letters, 1999
To clone the genes encoding lysis protein from a Chlorella virus, water samples were collected from 13 aquatic environments located in the Kanto area of Japan. Eight water samples contained plaque-forming viruses on Chlorella sp. NC64A, but no virus was detected in the other five samples.
Kouji SUDA   +3 more
openaire   +2 more sources

Understanding aspects of alginate biosynthesis and regulation by Pseudomonas aeruginosa : a thesis presented in partial fulfilment of the requirements of the degree of Doctor of Philosophy in Microbiology at Massey University, Palmerston North, New Zealand [PDF]

open access: yes, 2017
Alginate is a medically and industrially important polymer produced by seaweeds and certain bacteria. The bacterium Pseudomonas aeruginosa over-produces alginate during cystic fibrosis lung infections, forming biofilms, making the infection difficult to ...
Wang, Yajie
core  

Functional characterization of polysaccharide utilization loci in the marine Bacteroidetes 'Gramella forsetii' KT0803 [PDF]

open access: yes, 2014
Members of the phylum Bacteroidetes are abundant in many marine ecosystems and are known to have a pivotal role in the mineralization of complex organic substrates such as polysaccharides and proteins.
Albrecht, D.   +8 more
core   +1 more source

Characterization and Application of an Alginate Lyase, Aly1281 from Marine Bacterium Pseudoalteromonas carrageenovora ASY5

open access: yesMarine Drugs, 2020
Alginate extracted from widely cultured brown seaweed can be hydrolyzed by alginate lyase to produce alginate oligosaccharides (AOS) with intriguing biological activities.
Yong-Hui Zhang   +5 more
doaj   +1 more source

Arresting Microphase Separation Encodes Material Mechanics by Sculpting Microarchitectures and Local Polymer Enrichment

open access: yesAdvanced Materials, EarlyView.
Microarchitecture sculpting via phase separation programs hydrogel mechanics by creating globular, inverse globular, and spinodal structures. Spinodal architectures deliver superior toughness and energy dissipation, while ionic modulation through single polymer phase separation offers a simple, scalable route to tune mechanical properties ...
Castro Johnbosco   +9 more
wiley   +1 more source

Mechanical Stimuli‐Induced Manipulation of Malignant Behavior in Bioprinted Cancer Microtissues via PI3K/NF‐κB Activation

open access: yesAdvanced Science, EarlyView.
A mechanically tunable ECM platform is created by integrating dECM–alginate matrices with in‐bath tumor printing. The mechanically tunable ECM environment drives tumors to acquire hypoxia, mechanotransduction signaling, metastatic traits, and drug‐resistant phenotypes that collectively promote malignant transformation.
Seok‐Hyeon Lee   +8 more
wiley   +1 more source

Cytocompatible Enzymatic Hydrogelation of Phenylboronic Acid‐Alginate via H2O2‐Triggered Deboronation

open access: yesMacromolecular Materials and Engineering, EarlyView.
This study develops a hydrogelation method for preparing hydrogels from precursors containing polymer‐PBA and HRP via H2O2‐triggered deboronation and subsequent enzymatic crosslinking. This hydrogelation method can impart dynamic properties to HRP‐mediated hydrogelation without any additives, thereby demonstrating the potential of this hydrogelation ...
Ryota Goto, Shinji Sakai
wiley   +1 more source

Comparative characterization of three bacterial exo-type alginate lyases [PDF]

open access: yesInternational Journal of Biological Macromolecules, 2016
Alginate, a major acidic polysaccharide in brown macroalgae, has attracted attention as a carbon source for production of ethanol and other chemical compounds. Alginate is monomerized by exo-type alginate lyase into an unsaturated uronate; thus, this enzyme is critical for the saccharification and utilization of alginate.
Hirayama, Makoto   +3 more
openaire   +2 more sources

Elucidation of degrading pattern and substrate recognition of a novel bifunctional alginate lyase from Flammeovirga sp. NJ-04 and its use for preparation alginate oligosaccharides

open access: yesBiotechnology for Biofuels, 2019
Background The alginate oligosaccharides have been widely used in agriculture, medicine, and food industries due to their versatile physiological functions such as antioxidant, anticoagulant, and antineoplastic activities.
Benwei Zhu   +4 more
doaj   +1 more source

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