Results 91 to 100 of about 119,060 (284)

From structural to functional glycomics: core substitutions as molecular switches for shape and lectin affinity of N-glycans [PDF]

open access: yes, 2009
Glycan epitopes of cellular glycoconjugates act as versatile biochemical signals (sugar coding). Here, we test the hypothesis that the common N-glycan modifications by core fucosylation and introduction of the bisecting N-acetylglucosamine moiety have ...
André, Sabine   +4 more
core   +1 more source

Alternative Pathway for Methyl Supply through the Coupling of SHMT1 and PEMT to Maintain Astrocytic Homeostasis in Parkinson's Disease

open access: yesAdvanced Science, EarlyView.
In Parkinson's disease, SHMT1 downregulation disrupts its interaction with PEMT in astrocytes, reducing SAM levels. This leads to H3K4me1 hypomethylation and decreased Slc1a2/Glul expression, ultimately exacerbating neuroexcitotoxicity and dopaminergic neuron loss.
Yue‐Han Chen   +17 more
wiley   +1 more source

XPC Deficiency Activate Cisplatin‐Mediated Autophagy in Bladder Cancer by Limiting Novel PHRF1‐Mediated Ubiquitination of the p53 Protein

open access: yesAdvanced Science, EarlyView.
This study reveals that XPC regulates autophagy signaling beyond its noncanonical DNA repair role, uncovering the XPC‐p‐ATM‐KDM4A‐PHRF1 axis as a novel mechanism for autophagy modulation under DNA damage stress. It identifies PHRF1 as a novel p53 ubiquitin ligase.
Baixiong Zhao   +10 more
wiley   +1 more source

A Modular Biosensor Platform for the Detection of Plastic Monomers and the Engineering of Promiscuous Amidases Toward Challenging Substrates

open access: yesAdvanced Science, EarlyView.
A luciferase is used as biosensor for aldehydes, produced enzymatically from different monomeric building blocks of plastics like polyurethanes (PUs). The screening platform is used to monitor esterase, amidase, and urethanase activity and to guide the selection of enzyme variants with improved hydrolytic activities toward difficult to hydrolyze ...
Ina Somvilla   +12 more
wiley   +1 more source

Targeting of the hepatitis B virus precore protein to the endoplasmic reticulum membrane: after signal peptide cleavage translocation can be aborted and the product released into the cytoplasm. [PDF]

open access: yes, 1988
The major hepatitis B virus (HBV) core protein is a viral structural protein involved in nucleic acid binding. Its coding sequence contains an extension of 29 codons (the "precore" region) at the amino terminus of the protein which is present in a ...
Garcia, PD   +3 more
core  

Metabolism‐Regulating Nanomedicines for Cancer Therapy

open access: yesAdvanced NanoBiomed Research, EarlyView.
This review highlights metabolism‐regulating nanomedicines designed to target glycolytic, lipid, amino acid, and nucleotide pathways in tumors. By incorporating metabolism‐regulating agents into versatile nanocarriers such as liposomes, micelles, dendrimers, and engineered bacteria, these platforms achieve targeted delivery, controlled release ...
Xiao Wu, Shiyi Geng, Jian Yang
wiley   +1 more source

Posttranslational microtubule modification alters podocalyxin-trafficking in epithelial cells

open access: yesFrontiers in Cell and Developmental Biology
Epithelial polarization is characterized by separation of the plasma membrane into an apical and a basolateral membrane domain. This morphology is verified by cytoskeletal organization that stabilizes the cellular architecture and provides specific ...
Lena-Sophie Gorek   +6 more
doaj   +1 more source

Protein S-sulfenylation is a fleeting molecular switch that regulates non-enzymatic oxidative folding

open access: yesNature Communications, 2016
Protein S-sulfenylation is a posttranslational modification that can act as a sensor of redox oxidative stress. Here the authors show that, following mechanical unfolding, sulfenic acid drives disulfide bond reformation and guides non-enzymatic oxidative
Amy E. M. Beedle   +2 more
doaj   +1 more source

Tyrosine Sulfation as a Protein Post-Translational Modification

open access: yesMolecules, 2015
Integration of inorganic sulfate into biological molecules plays an important role in biological systems and is directly involved in the instigation of diseases.
Yuh-Shyong Yang   +5 more
doaj   +1 more source

Elongation factor 2-diphthamide is critical for translation of two IRES-dependent protein targets, XIAP and FGF2, under oxidative stress conditions [PDF]

open access: yes, 2013
Elongation factor-2 (eEF2) catalyzes the movement of the ribosome along the mRNA. A single histidine residue in eEF2 (H715) is modified to form diphthamide. A role for eEF2 in cellular stress responses is highlighted by the fact that eEF2 is sensitive to
Argüelles Castilla, Sandro   +3 more
core   +1 more source

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