Results 51 to 60 of about 1,917 (174)

L. pneumophila CMP-5,7-di- N -acetyllegionaminic acid synthetase (LpCLS)-involved chemoenzymatic synthesis of sialosides and analogues [PDF]

open access: yes, 2020
5,7-Di-N-acetyllegionaminic acid (Leg5,7Ac2) is a bacterial nonulosonic acid (NulO) analogue of sialic acids, an important class of monosaccharides in mammals and in some bacteria. To develop efficient one-pot multienzyme (OPME) glycosylation systems for
Chen, Xi   +6 more
core   +1 more source

Expression of active human sialyltransferase ST6GalNAcI in Escherichia coli [PDF]

open access: yes, 2009
Georgios Skretas, Sean Carroll, and George Georgiou are with the Department of Chemical Engineering, University of Texas at Austin, Austin, TX 78712, USA -- George Georgiou is with the Department of Biomedical Engineering, University of Texas at Austin ...
George Georgiou   +5 more
core   +1 more source

Catch, Cut, or Block? Versatile 4‐N‐Derivatized Sialyl Glycosides for Influenza Virus Neuraminidase Detection and Purification

open access: yesAngewandte Chemie, Volume 137, Issue 25, June 17, 2025.
Sialyl glycosides containing 4‐N‐derivatized sialic acids synthesized by a highly efficient one‐pot two‐enzyme (OP2E) chemoenzymatic sialylation strategy have been shown to be versatile probes. They can resist sialidase cleavage, be selective substrates by influenza sialidases, or be nanomolar substrate analog‐based inhibitors and affinity ligands ...
Yue Yuan   +6 more
wiley   +2 more sources

Sialyltransferase Inhibition and Recent Advances [PDF]

open access: yes, 2016
Sialic acids, existing as terminal sugars of glycoconjugates, play important roles in various physiological and pathological processes, such as cell–cell adhesion, immune defense, tumor cell metastasis, and inflammation. Sialyltransferases (STs) catalyze
Liu, Ying   +3 more
core   +4 more sources

Quantification of Free Sialic Acid in Human Plasma through a Robust Quinoxalinone Derivatization and LC–MS/MS Using Isotope-labeled Standard Calibration [PDF]

open access: yes, 2014
We report an accurate quantification of free sialic acid (SA) in human plasma using LC–MS/MS method with isotope-labeled standard calibration (ILSC) and robust derivatization.
Sun, Xue-Long   +4 more
core   +4 more sources

Generation and characterization of genetically modified pigs with GGTA1/β4GalNT2/CMAH knockout and human CD55/CD47 expression for xenotransfusion studies

open access: yesScientific Reports
Pig red blood cells (pRBCs) represent a promising alternative to address the shortage in transfusion medicine. Nonetheless, a major obstacle to their clinical implementation is immunological rejection.
Bin Fang   +8 more
doaj   +1 more source

Untargeted Metabolite Mapping in 3D Cell Culture Models using High Spectral Resolution FT-ICR Mass Spectrometry Imaging [PDF]

open access: yes, 2019
Multicellular tumor spheroids (MTS) are a well-established model system for drug development and are a valuable in vitro research tool for use prior to employing animal models.
Campbell, Colin J.   +6 more
core   +2 more sources

Triple gene editing in porcine embryos using electroporation alone or in combination with microinjection [PDF]

open access: yes, 2023
Background and Aim: We previously developed the gene-editing by electroporation (EP) of Cas9 protein method, in which the CRISPR/Cas9 system was introduced into porcine in vitro fertilized (IVF) zygotes through EP to disrupt a target gene.
Do, Lanh Thi Kim   +8 more
core  

Microglia Display Altered Spatial Morphology and Proteome After Stroke

open access: yesPROTEOMICS, Volume 25, Issue 23, Page 59-76, December 2025.
ABSTRACT Microglia are abundantly distributed throughout the central nervous system (CNS) to play critical roles in neural development and homeostasis, and act as immune sentinels to constantly monitor their surrounding neural environment. Given their high reactivity to brain insults, we hypothesised that the cerebral microenvironment altered by ...
Brooke J. Wanrooy   +10 more
wiley   +1 more source

Absence of Neu5Gc and Presence of Anti-Neu5Gc Antibodies in Humans-An Evolutionary Perspective. [PDF]

open access: yes, 2019
The glycocalyx of human cells differs from that of many other mammals by the lack of the sialic acid N-glycolylneuraminic acid (Neu5Gc) and increased abundance of its precursor N-acetylneuraminic acid (Neu5Ac).
Altman, Meghan O, Gagneux, Pascal
core   +1 more source

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