Phosphatidylinositol 4-phosphate (PI4P) is the most abundant monophosphoinositide in eukaryotic cells. Humans have four phosphatidylinositol 4-kinases (PI4Ks) that synthesize PI4P, among which are PI4K IIβ and PI4K IIα. In this study, two crystal structures are presented: the structure of human PI4K IIβ and the structure of PI4K IIα containing a nucleoside analogue. The former, a complex with ATP, is the first high-resolution (1.9 Å) structure of a PI4K. These structures reveal new details such as high conformational heterogeneity of the lateral hydrophobic pocket of the C-lobe and together provide a structural basis for isoform-specific inhibitor design.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1107/S1399004715009505 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Structural insights into the role of the prosegment binding loop in a papain-superfamily cysteine protease from Treponema denticola.
Acta Crystallogr F Struct Biol Commun
February 2025
Department of Structural Biology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, New York, USA.
Periodontal diseases afflict 20-50% of the global population and carry serious health and economic burdens. Chronic periodontitis is characterized by inflammation of the periodontal pocket caused by dysbiosis. This dysbiosis is coupled with an increase in the population of Treponema denticola, a spirochete bacterium with high mobility and invasivity mediated by a number of virulence factors.
View Article and Find Full Text PDFStructural Insights into Broad-Range Polyphosphate Kinase 2‑II Enzymes Applicable for Pyrimidine Nucleoside Diphosphate Synthesis.
Chembiochem
January 2025
University of Freiburg: Albert-Ludwigs-Universitat Freiburg, Institute of Pharmaceutical Sciences, Albertstr. 25, 79104, Freiburg, GERMANY.
Polyphosphate kinases (PPK) play crucial roles in various biological processes, including energy storage and stress responses, through their interaction with inorganic polyphosphate (polyP) and the intracellular nucleotide pool. Members of the PPK family 2 (PPK2s) catalyse polyP‑consuming phosphorylation of nucleotides. In this study, we characterised two PPK2 enzymes from Bacillus cereus (BcPPK2) and Lysinibacillus fusiformis (LfPPK2) to investigate their substrate specificity and potential for selective nucleotide synthesis.
View Article and Find Full Text PDFHighly Selective α-Addition and β-Conjugate Addition Products from Peptides Composed of α,β-Unsaturated γ-Amino Acids.
J Org Chem
January 2025
Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
β-Addition products are common in conjugate addition reactions consisting of α,β-unsaturated carbonyl compounds. Here, we are reporting an uncommon α-addition product as a major product in the thioacetic acid conjugate addition reaction on a peptide consisting of ()-α,β-unsaturated γ-amino acids. In addition, we observed highly diastereoselective β-addition products from the thiophenol and thioethanol conjugate addition reaction on peptides.
View Article and Find Full Text PDFEicosapentaenoic acid as an antibiofilm agent disrupts mature biofilms of .
Biofilm
June 2025
Department of Infectious Diseases and Clinical Microbiology, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China.
The biofilm formation of , a major human fungal pathogen, represents a crucial virulence factor during candidiasis. Eicosapentaenoic acid (EPA), a polyunsaturated fatty acid, has emerged as a potential antibiofilm agent against . .
View Article and Find Full Text PDFThe effect of feedstock concentration on the crystal phase, morphology, and optical properties of WO nanostructures.
RSC Adv
January 2025
Microelectronics Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu P.O. Box 4500 FIN-90014 Oulu Finland.
In this study, the effect of feedstock concentration on the synthesis of WO nanostructures in a one-step hydrothermal process was investigated. According to our experiments, when titrating aqueous NaWO·2HO with HCl solutions of different concentrations to a constant pH of 1.5, after identical hydrothermal treatments at 180 °C, the morphology, crystal size and phase composition as well as the optical properties of the products could be tuned.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!