Results 21 to 30 of about 29,385 (199)

Dokdolipids A−C, Hydroxylated Rhamnolipids from the Marine-Derived Actinomycete Actinoalloteichus hymeniacidonis

Marine Drugs, 2019
Three new hydroxylated rhamnolipids, dokdolipids A−C (1−3) were obtained from the marine actinomycete Actinoalloteichus hymeniacidonis, which was isolated from a sediment sample collected off the coasts of Dokdo island, Republic of Korea. The
Byeoung-Kyu Choi, Hwa-Sun Lee, Jong Soon Kang, Hee Jae Shin   +3 more
doaj   +1 more source

Catabolism of l-rhamnose in A. nidulans proceeds via the non-phosphorylated pathway and is glucose repressed by a CreA-independent mechanism

Microbial Cell Factories, 2020
l-rhamnose (6-deoxy-mannose) occurs in nature mainly as a component of certain plant structural polysaccharides and bioactive metabolites but has also been found in some microorganisms and animals.
Andrew P. MacCabe, Elpinickie I. Ninou, Ester Pardo, Margarita Orejas   +3 more
doaj   +1 more source

Rhamnose-inducible gene expression in Listeria monocytogenes. [PDF]

PLoS ONE, 2012
Acid production from rhamnose is a characteristic phenotype of Listeria monocytogenes. We report the identification of the rhamnose transport and utilization operon located at lmo2846 to lmo2851, including the rhamnose-dependent promoter P(rha ...
Lars Fieseler, Sibylle Schmitter, Justinas Teiserskas, Martin J Loessner   +3 more
doaj   +1 more source

Intestinal permeability induced by lipopolysaccharide and measured by lactulose, rhamnose and mannitol sugars in chickens

Animal, 2017
Increased intestinal permeability (IP) can lead to compromised health. Limited in vivo IP research has been conducted in chickens. The objectives of the current study were to develop a model of increased IP utilizing lipopolysaccharide (LPS Escherichia ...
S. Gilani, G.S. Howarth, S.M. Kitessa, C.D. Tran, R.E.A. Forder, R.J. Hughes   +5 more
doaj   +1 more source

Assessment of small-intestine permeability in healthy Nigerian children is altered by urinary volume and voiding status.

PLoS ONE, 2021
ObjectiveThis study aimed to uncover the effect of voided urinary volume on small intestine permeability ratios in healthy children.MethodsWe assessed small intestine permeability in 155 apparently healthy children, aged 3-5 years old, without any ...
Ibukun Afolami, Folake Olukemi Samuel, Martin Mwangi, Michael Oderinde, Marlies Diepeveen-de Bruin, Alida Melse-Boonstra   +5 more
doaj   +1 more source

Stereodivergent C‐(Hetero)Aryl Glycosylation by Nickel‐Catalyzed Redox‐Neutral Cross‐Coupling of Glycosyl Sulfonyl Hydrazides

Angewandte Chemie, EarlyView.
A nickel‐catalyzed C–C cross‐coupling protocol employing bench‐stable glycosyl sulfonyl hydrazides as practical glycosyl radical precursors is reported. A variety of (hetero)aryl iodides underwent cross‐coupling under redox‐neutral conditions to afford structurally diverse unprotected C‐(hetero)aryl glycosides.
Cai‐Ming Wang, Wen Wei, Jun Wu, Ming Joo Koh   +3 more
wiley   +2 more sources

An Acinetobacter baumannii nasal carriage isolate recovered from an asymptomatic patient in Vietnam is extensively antibiotic resistant and produces a rare K71 type capsule

Microbiology Spectrum
Acinetobacter baumannii is a leading cause of multidrug-resistant bacterial infections worldwide, and the capsular polysaccharide (CPS) is a major virulence determinant. A previous study of A.
Anna M. Shpirt, Christopher J. Harmer, Alexander S. Shashkov, Mikhail M. Shneider, Alexander O. Chizhov, Andrey S. Dmitrenok, Anastasiya V. Popova, Anastasiya A. Kasimova, Andrei V. Perepelov, Yuriy A. Knirel, Ruth M. Hall, Johanna J. Kenyon   +11 more
doaj   +1 more source

The Loss-of-Function Mutation aldA67 Leads to Enhanced α-L-Rhamnosidase Production by Aspergillus nidulans

Journal of Fungi, 2022
In Aspergillus nidulans L-rhamnose is catabolised to pyruvate and L-lactaldehyde, and the latter ultimately to L-lactate, via the non-phosphorylated pathway (LRA) encoded by the genes lraA-D, and aldA that encodes a broad substrate range aldehyde ...
Margarita Orejas, Andrew P. MacCabe
doaj   +1 more source

Bacteroides thetaiotaomicron enhances oxidative stress tolerance through rhamnose-dependent mechanisms

Frontiers in Microbiology
This study probes into the unique metabolic responses of Bacteroides thetaiotaomicron (B. thetaiotaomicron), a key player in the gut microbiota, when it metabolizes rhamnose rather than typical carbohydrates.
Shuo Xie, Shuo Xie, Junze Ma, Zheng Lu
doaj   +1 more source

6‐Deoxyhexoses from l‐Rhamnose in the Search for Inducers of the Rhamnose Operon: Synergy of Chemistry and Biotechnology [PDF]

Chemistry – A European Journal, 2016
AbstractIn the search for alternative non‐metabolizable inducers in the l‐rhamnose promoter system, the synthesis of fifteen 6‐deoxyhexoses from l‐rhamnose demonstrates the value of synergy between biotechnology and chemistry. The readily available 2,3‐acetonide of rhamnonolactone allows inversion of configuration at C4 and/or C5 of rhamnose to give 6 ...
Zilei Liu, Akihide Yoshihara, Ciarán Kelly, John T. Heap, Mikkel H. S. Marqvorsen, Sarah F. Jenkinson, Mark R. Wormald, José M. Otero, Amalia Estévez, Atsushi Kato, George W. J. Fleet, Ramón J. Estévez, Ken Izumori   +12 more
openaire   +3 more sources