ArticleGlycoconjugate journal2006
Kinetic properties and substrate specificities of two recombinant human N-acetylglucosaminyltransferase-IV isozymes.
Article in Glycoconjugate journal, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
23 citing papers in PubMed, 43 citations in OpenAlex.
- Isomeric diversity of GlcNAc(ManScientific reports · 2026Article
- Targeting MGAT4A-Mediated N-Glycosylation as a Therapeutic Strategy to Inhibit Glioblastoma Stem Cell Invasion.Exploration (Beijing, China) · 2026Article
- Development and validation of a glycosyltransferase-associated prognostic model for melanoma and characterization of the tumor immune microenvironment using single-cell sequencing data.Biochemistry and biophysics reports · 2025Article
- Evolutionary analyses of the animal glycosyltransferase family 54 reveals two β1,4-N-acetylglucosaminyltransferase families.iScience · 2025Article
- Article
- Chemoenzymatic Synthesis of Asymmetric Bisecting Bi-, Tri-, and Tetra-AntennaryJournal of the American Chemical Society · 2025Article
- Optogenetic Clustering of Human IRE1 Reveals Differential Regulation of Transcription and mRNA Splice Isoform Abundance by the UPR.bioRxiv : the preprint server for biology · 2025Article
- MGAT4A/Galectin9-Driven N-Glycosylation Aberration as a Promoting Mechanism for Poor Prognosis of Endometrial Cancer with TP53 Mutation.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
- Thyroid Carcinoma Glycoproteins Express AlteredBiomolecules · 2024Article
- Glycosphingolipids: from metabolism to chemoenzymatic total synthesis.Organic & biomolecular chemistry · 2024Review
- Regulation of intracellular activity of N-glycan branching enzymes in mammals.The Journal of biological chemistry · 2024Review
- Discovery of a lectin domain that regulates enzyme activity in mouse N-acetylglucosaminyltransferase-IVa (MGAT4A).Communications biology · 2022Article
- N-Glycosylation.Advances in experimental medicine and biology · 2021Article
- Robustness in glycosylation systems: effect of modified monosaccharides, acceptor decoys and azido sugars on cellular nucleotide-sugar levels and pattern of N-linked glycosylation.Molecular omics · 2020Article
- 3D Structure and Function of Glycosyltransferases Involved inInternational journal of molecular sciences · 2020Review
- Analysis of miRNA expression profiling in human umbilical vein endothelial cells affected by heat stress.International journal of molecular medicine · 2017Article
- Evolution of protein N-glycosylation process in Golgi apparatus which shapes diversity of protein N-glycan structures in plants, animals and fungi.Scientific reports · 2017Article
- Enzymes for N-Glycan Branching and Their Genetic and Nongenetic Regulation in Cancer.Biomolecules · 2016Review
- Atomic visualization of a flipped-back conformation of bisected glycans bound to specific lectins.Scientific reports · 2016Article
- MicroRNA-424 Predicts a Role for β-1,4 Branched Glycosylation in Cell Cycle Progression.The Journal of biological chemistry · 2016Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
N-acetylglucosaminyltransferase (GnT)-IV catalyzes the formation of the GlcNAcbeta1-4 branch on the GlcNAcbeta1-2Manalpha1-3 arm of the core structure of N-glycans. Two human GnT-IV isozymes (GnT-IVa and GnT-IVb) had been identified, which exhibit different expression profiles among human tissues and cancer cell lines. To clarify the enzymatic properties of the respective enzymes, their kinetic parameters were determined using recombinant full-length enzymes expressed in COS7 cells. The K (m) of human GnT-IVb for UDP-GlcNAc was estimated to be 0.24 mM, which is 2-fold higher than that of human GnT-IVa. The K (m) values of GnT-IVb for pyridylaminated (PA) acceptor sugar chains with different branch numbers were 3- to 6-fold higher than those of GnT-IVa. To compare substrate specificities more precisely, we generated recombinant soluble enzymes of human GnT-IVa and GnT-IVb with N-terminal flag tags. Both enzymes showed similar substrate specificities as determined using fourteen PA-sugar chains. They preferred complex-type N-glycans over hybrid-types. Among the complex-type N-glycans tested, the relative activities of both enzymes were increased in proportion to the number of GlcNAc branches on the Man alpha1-6 arm. The Man alpha1-6 arm of the acceptors was not essential for their activities because a linear pentasaccharide lacking this arm, GlcNAcbeta1-2Manalpha1-3Manbeta1-4GlcNAcbeta1-4 GlcNAc-PA, was a substrate for both enzymes. These results indicate that human GnT-IVb exhibits the same acceptor substrate specificities as human GnT-IVa, although GnT-IVb has lower affinities for donors or acceptors than GnT-IVa. This suggests that GnT-IVa is more active than GnT-IVb under physiological conditions and that it primarily contributes to the biosynthesis of N-glycans.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.