Results 41 to 50 of about 492,866 (322)

Targeting G-quadruplex motifs interferes with differentiation of adipose-derived mesenchymal stem cells

Stem Cell Research & Therapy, 2023
Background G-quadruplex (G4) motifs are nucleic acid secondary structures observed in mammalian genomes and transcriptomes able to regulate various cellular processes.
Maria Rosaria Ambrosio, Teresa Migliaccio, Fabiana Napolitano, Sarah Di Somma, Giovanni Maneli, Jussara Amato, Bruno Pagano, Antonio Randazzo, Giuseppe Portella, Pietro Formisano, Anna Maria Malfitano   +10 more
doaj   +1 more source

DmCatD, a cathepsin D-like peptidase of the hematophagous insect Dipetalogaster maxima (Hemiptera: Reduviidae): Purification, bioinformatic analyses and the significance of its interaction with lipophorin in the internalization by developing oocytes [PDF]

, 2018
DmCatD, a cathepsin D-like peptidase of the hematophagous insect Dipetalogaster maxima, is synthesized by the fat body and the ovary and functions as yolk protein precursor. Functionally, DmCatD is involved in vitellin proteolysis.
Arrese, Estela L., Canavoso, Lilian Etelvina, Carlini, Célia Regina R S, Defferrari, Marina S., Fruttero, Leonardo Luis, Leyria, Jimena, Ligabue Braun, Rodrigo, Settembrini, Beatriz Patricia, Soulages, José L.   +8 more
core   +1 more source

A New Perspective on the Antimicrobial Mechanism of Berberine Hydrochloride Against Staphylococcus aureus Revealed by Untargeted Metabolomic Studies

Frontiers in Microbiology, 2022
Berberine hydrochloride (BBR) is a natural product widely used in clinical medicine and animal production. It has a variety of antimicrobial effects, but its complex antimicrobial mechanism has not been clarified.
Shu Wu, Kun Yang, Yuhang Hong, Yanju Gong, Jiajia Ni, Jiajia Ni, Ni Yang, Weijun Ding   +7 more
doaj   +1 more source

Role of clays in the prebiotic synthesis of sugar derivatives from formamide [PDF]

, 2010
We describe here the role of montmorillonite KSF in the prebiotic synthesis of amino sugar derivatives starting from a mixture of formamide and formaldehyde as simple chemical precursors.
Crestini, Claudia, Neri, Veronica, Saladino, Raffaele   +2 more
core   +1 more source

Modification of Purine and Pyrimidine Nucleosides by Direct C-H Bond Activation

Molecules, 2015
Transition metal-catalyzed modifications of the activated heterocyclic bases of nucleosides as well as DNA or RNA fragments employing traditional cross-coupling methods have been well-established in nucleic acid chemistry.
Yong Liang, Stanislaw F. Wnuk
doaj   +1 more source

Initiator tRNA genes template the 3' CCA end at high frequencies in bacteria. [PDF]

, 2016
BackgroundWhile the CCA sequence at the mature 3' end of tRNAs is conserved and critical for translational function, a genetic template for this sequence is not always contained in tRNA genes.
Ardell, David H, Hou, Ya-Ming
core   +3 more sources

Non‐enzymatic glycolysis and pentose phosphate pathway‐like reactions in a plausible Archean ocean

Molecular Systems Biology, 2014
The reaction sequences of central metabolism, glycolysis and the pentose phosphate pathway provide essential precursors for nucleic acids, amino acids and lipids. However, their evolutionary origins are not yet understood.
Markus A Keller, Alexandra V Turchyn, Markus Ralser   +2 more
doaj   +1 more source

Defects in germinal center selection in SLE

Frontiers in Immunology, 2015
Germinal centers (GCs) are the primary site at which clonal expansion and affinity maturation of B cells occurs. B cells encounter antigen and receive T cell help in the GC light zone (LZ) and then migrate to the dark zone where they proliferate and ...
Megan eWoods, Yong-Rui eZou, Anne eDavidson   +2 more
doaj   +1 more source

Decoding Mycoplasma Nucleases: Biological Functions and Pathogenesis

Toxins
Nucleases are critical metabolic enzymes expressed by mycoplasmas to acquire nucleic acid precursors from the host for their parasitic existence. Certain nucleases, either membrane-bound or secreted, not only contribute to the growth of mycoplasmas but ...
Xinchao Yi, Ying Huang, Xinru Li, Hao Xu, Chang Liu, Chao Li, Qianrui Zeng, Haodang Luo, Zufeng Ye, Jun He, Xiaoxing You   +10 more
doaj   +1 more source

Shedding light on gene therapy: Carbon dots for the minimally invasive image-guided delivery of plasmids and noncoding RNAs - A review

Journal of Advanced Research, 2019
Recently, carbon dots (CDs) have attracted great attention due to their superior properties, such as biocompatibility, fluorescence, high quantum yield, and uniform distribution.
Reza Mohammadinejad, Arezoo Dadashzadeh, Saeid Moghassemi, Milad Ashrafizadeh, Ali Dehshahri, Abbas Pardakhty, Hosseinali Sassan, Seyed-Mojtaba Sohrevardi, Ali Mandegary   +8 more
doaj   +1 more source