Results 221 to 230 of about 6,578,863 (285)

pH‐Responsive Ultrasmall Iron Oxide Nanoassemblies for Activatable T2/T1 Magnetic Resonance Imaging

open access: yesAdvanced NanoBiomed Research, EarlyView.
This research reports a pH‐responsive ultrasmall iron oxide nanoparticle (USIONs)/polymer nanoassemblies for activatable magnetic resonance imaging. Amphiphilic diphosphonic acid block copolymers compactly encapsulate USIONs to generate T2‐weighted contrast at physiological pH, while acidic conditions trigger disassembly, activating T1‐weighted ...
Xumin Huang   +11 more
wiley   +1 more source

Structure and Function of a Multi‐Megadalton Virus‐Like Proteolytic Dodecahedron

open access: yesAngewandte Chemie, EarlyView.
Zuzalysin, a virulence metallopeptidase of the periodontal pathogen Porphyromonas gingivalis, is secreted as a latent, flexible ≈95‐kDa monomer. Calcium triggers cysteine‐switch activation and hierarchical assembly into pentamers, bipentamers, tripentamers, and a ≈5.6‐MDa, ≈355‐Å dodecahedron. Structures at 1.8–3.6 Å reveal a virus‐sized catalytic cage
Mariusz Madej   +20 more
wiley   +2 more sources

Noninvasive Diagnosis of Splenosis Using Tc‐99m Heat‐Denatured Red Blood Cell Scintigraphy

open access: yes
American Journal of Hematology, EarlyView.
Natacha Dewarrat   +4 more
wiley   +1 more source

Broad‐Spectrum, Cell Envelope‐Active Marinocyclin Antibiotics From a Coral‐Derived Bacterium Are Effective Against Colistin‐Resistant Bacteria

open access: yesAngewandte Chemie, EarlyView.
Marinocyclins, polycationic macrocyclic depsipeptides, were discovered by genome mining from the marine coral‐derived bacterium Aquimarina megaterium. The compounds have broad‐spectrum activity against gram‐positive and gram‐negative ESKAPE bacteria.
Clara Chepkirui   +9 more
wiley   +2 more sources

Risks of "blind" automated identification systems in medical microbiology. [PDF]

open access: yesJ Clin Microbiol, 2013
Mancini N   +3 more
europepmc   +1 more source

Adenylation Domain Engineering Enables Biosynthesis of an Improved Polymyxin Antibiotic

open access: yesAngewandte Chemie, EarlyView.
To enable incorporation of l‐2‐aminodecanoic acid into polymyxin by fermentation, a single Trp‐to‐Ala substitution is rationally introduced into the adenylation‐domain residue of its nonribosomal peptide synthetase (NRPS) and efficiently switches substrate selectivity. The engineered strain produces biologically active Ada‐polymyxin, demonstrating that
Maximilian Müll   +7 more
wiley   +2 more sources

Reply to "risks of 'blind' automated identification systems in medical microbiology". [PDF]

open access: yesJ Clin Microbiol, 2013
Westblade LF   +14 more
europepmc   +1 more source

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