Results 91 to 100 of about 283,665 (235)

The fate of thiopurine metabolites after switching to low‐dose thiopurine with allopurinol or thioguanine in IBD patients: A retrospective analysis

British Journal of Clinical Pharmacology, EarlyView.
Aims Shunting (hypermethylating) thiopurine metabolism, characterized by excessive 6‐MMPR production and (sub)therapeutic 6‐TGN levels, poses a significant challenge in the treatment of inflammatory bowel disease (IBD). This study evaluates the metabolic outcomes of switching to low‐dose thiopurine with allopurinol (LDTA) or thioguanine (TG) in IBD ...
Ahmed B. Bayoumy, Hedwig M. A. D'Agnolo, Nanne K. H. de Boer, Chris J. J. Mulder, Luc J. J. Derijks   +4 more
wiley   +1 more source

First-principles GW calculations for DNA and RNA nucleobases

, 2011
On the basis of first-principles GW calculations, we study the quasiparticle properties of the guanine, adenine, cytosine, thymine, and uracil DNA and RNA nucleobases.
A. Travers, Carina Faber, Claudio Attaccalite, E. Runge, H. Lodish, V. Olevano, X. Blase   +6 more
core   +4 more sources

Advances in Cytosolic Delivery of Proteins: Approaches, Challenges, and Emerging Technologies

Chemistry &Biodiversity, EarlyView.
Proteins regulate almost all biological processes, and overcoming the protein's natural membrane inpermeability will provide a unique opportunity for intracellular targeting of related therapeutic proteins. Chemical modification of proteins and different types of delivery vectors can mediate intracellular transport of proteins, providing new ideas for ...
Wenyan Zhang, Huiling Liu, Bingdong Zhu, Wen Li, Xue Han, Jiaojiao Fu, Renjie Luo, Haiyan Wang, Jinxia Wang   +8 more
wiley   +1 more source

Complete Reaction Studies in Exobiology - the Chemistry and Photochemistry of Nucleic Acid Constituents and Related Compounds, and Their Detection, Characterization, and Isolation Semiannual Progress Report No. 4 /final/ [PDF]

Fluorescence spectra for purines, guanine, and benzimidazole - photolysis and photochemical reactions of nucleotide derivatives and isolation of their photolytic primary ...
Millich, F.
core   +1 more source

Proline Amide Catalyzes Formation of Toxic Crotonaldehyde from Acetaldehyde Under Physiologically Relevant Conditions

ChemBioChem, EarlyView.
Crotonaldehyde‐derived DNA lesions are reported in patients after ethanol exposure, which implies that crotonaldehyde is produced after ethanol ingestion. Here, we show that proline amide, which mimics N‐terminal proline residues on human proteins, can catalyze crotonaldehyde formation from the ethanol metabolite acetaldehyde under physiologically ...
Liam A. Thomas, Vicki L. Emms, Dipti Vashi, Louise Fairall, John W. R. Schwabe, Richard J. Hopkinson   +5 more
wiley   +1 more source

Methods for Controlling Small GTPase Activity

ChemBioChem, Accepted Article.
Small GTPases comprise a diverse class of signaling proteins in mammalian cells and regulate a variety of cellular processes such as cell growth, cell movement, vesicle formation, and nuclear transport. Due to their involvement in critical cellular pathways, changes in the activation state of small GTPases due to genetic mutations or alterations in ...
Benjamin Faulkner, Yuchen He, Daniel Sitrin, Cliff Stains   +3 more
wiley   +1 more source

The Structure of Guanine Propionate [PDF]

Journal of Biological Chemistry, 1961
G. Robert Greenberg, Usama al-Khalidi
openaire   +2 more sources

Selective [9‐15N] Guanosine for Nuclear Magnetic Resonance Studies of Large Ribonucleic Acids

ChemBioChem, EarlyView.
The small chemical shift anisotropy of nitrogen‐15 at the 9‐position in guanine (15N9‐G) leads to long T2 values and narrow NMR lines, particularly attractive to probe structure and dynamics of large (>200 nucleotide) ribonucleic acids (RNAs). RNAs regulate various cellular processes using malleable 3D structures, and understanding the factors that ...
Solomon K. Attionu, Rita Dill, Michael F. Summers, David A. Case, Jan Marchant, Theodore K. Dayie   +5 more
wiley   +1 more source

Advancing the Exploration of the Ubiquitin‐like Protein FUBI with Synthetic Chemical Tools

ChemBioChem, Accepted Article.
The Ubiquitin‐like protein FUBI is encoded in humans by the FAU gene, whose down‐regulation in prostate, ovarian and breast cancer is significantly associated with poor prognosis. Despite its implications in disease progression, the regulatory mechanisms orchestrated by FUBI remain elusive. To address this knowledge gap, we developed a linear synthetic
Francesca D'Amico, Cami Talavera Ormeño, Shivanganie Poeran, Jimmy Akkermans, Rayman T.N. Tjokrodirijo, Bharath Sampadi, Peter van Veelen, Aysegul Sapmaz, Monique Priscilla Catharina Mulder   +8 more
wiley   +1 more source

Development and Recent Advances in SLIPT‐PM: A Chemogenetic Platform for Manipulating Signaling at the Plasma Membrane

ChemBioChem, Accepted Article.
Upon cell stimulation, mammalian cells activate various signaling proteins and lipids by recruiting their upstream regulators to the inner leaflet of the plasma membrane (PM), which in turn determines their cellular response. Therefore, artificially inducing protein translocation to the PM is an effective strategy for dissecting cell signaling networks
Shuya Ohira, Akinobu Nakamura, Kenta Terai, Shinya Tsukiji   +3 more
wiley   +1 more source