Results 31 to 40 of about 61,653 (191)

Infection-generated electric field in gut epithelium drives bidirectional migration of macrophages. [PDF]

open access: yes, 2019
Many bacterial pathogens hijack macrophages to egress from the port of entry to the lymphatic drainage and/or bloodstream, causing dissemination of life-threatening infections. However, the underlying mechanisms are not well understood.
Ferreira, Fernando   +14 more
core   +2 more sources

Single-channel measurements of an N-acetylneuraminic acid-inducible outer membrane channel in Escherichia coli [PDF]

open access: yes, 2012
NanC is an Escherichia coli outer membrane protein involved in sialic acid (Neu5Ac, i.e., N-acetylneuraminic acid) uptake. Expression of the NanC gene is induced and controlled by Neu5Ac. The transport mechanism of Neu5Ac is not known.
Eisenberg, Bob   +4 more
core   +1 more source

Role of Pneumococcal NanA Neuraminidase Activity in Peripheral Blood

open access: yesFrontiers in Cellular and Infection Microbiology, 2019
The most frequent form of hemolytic-uremic syndrome (HUS) is associated with infections caused by Shiga-like toxin-producing Enterohaemorrhagic Escherichia coli (STEC). In rarer cases HUS can be triggered by Streptococcus pneumoniae.
Shahan Syed   +10 more
doaj   +1 more source

Siglecs as Therapeutic Targets in Cancer

open access: yesBiology, 2021
Hypersialylation is a common post-translational modification of protein and lipids found on cancer cell surfaces, which participate in cell-cell interactions and in the regulation of immune responses. Sialic acids are a family of nine-carbon α-keto acids
Jackwee Lim, Duygu Sari-Ak, Tanaya Bagga
doaj   +1 more source

Sialic acid O-acetylation patterns and glycosidic linkage type determination by ion mobility-mass spectrometry

open access: yesNature Communications, 2023
O-acetylation is a common modification of sialic acids that has been implicated in a multitude of biological and disease processes. A lack of analytical methods that can determine exact structures of sialic acid variants is a hurdle to determine roles of
Gaёl M. Vos   +7 more
doaj   +1 more source

Profiling of Glycan Receptors for Minute Virus of Mice in Permissive Cell Lines Towards Understanding the Mechanism of Cell Recognition [PDF]

open access: yes, 2013
The recognition of sialic acids by two strains of minute virus of mice (MVM), MVMp (prototype) and MVMi (immunosuppressive), is an essential requirement for successful infection.
Agbandje-McKenna, M   +12 more
core   +1 more source

The Sodium Sialic Acid Symporter From Staphylococcus aureus Has Altered Substrate Specificity

open access: yesFrontiers in Chemistry, 2018
Mammalian cell surfaces are decorated with complex glycoconjugates that terminate with negatively charged sialic acids. Commensal and pathogenic bacteria can use host-derived sialic acids for a competitive advantage, but require a functional sialic acid ...
Rachel A. North   +22 more
doaj   +1 more source

Sialic acids in gastropods [PDF]

open access: yesFEBS Letters, 2001
The occurrence of N‐acetylneuraminic acid and N‐glycolylneuraminic acid residues in preparations of the slug Arion lusitanicus (Gastropoda) was determined by sodium dodecyl sulphate electrophoresis of the proteins followed by lectin blots stained with the sialic acid specific lectin from Maackia amurensis, by the sensitivity of this binding to ...
Bürgmayr, Sabine   +2 more
openaire   +2 more sources

DNA-binding transferrin conjugates as functional gene-delivery agents: synthesis by linkage of polylysine or ethidium homodimer to the transferrin carbohydrate moiety [PDF]

open access: yes, 1991
We have previously demonstrated that transferrin-polycation conjugates are efficient carrier molecules for the introduction of genes into eucariotic cells.
Birnstiel, Max L.   +4 more
core   +1 more source

Cellular and Molecular Engineering of Glycan Sialylation in Heterologous Systems

open access: yesMolecules, 2021
Glycans have been shown to play a key role in many biological processes, such as signal transduction, immunogenicity, and disease progression. Among the various glycosylation modifications found on cell surfaces and in biomolecules, sialylation is ...
Ryoma Hombu   +2 more
doaj   +1 more source

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