Results 61 to 70 of about 3,475,040 (327)

A modified RP-HPLC method for the determination of the pKa values of synthesized β-hydroxy-β-arylalkanoic acids [PDF]

open access: yesJournal of the Serbian Chemical Society, 2018
The pKa values of twelve β-hydroxy-β-arylalkanoic acids and ibuprofen were determined using a modified RP-HPLC method. The stationary phase was octadecyl modified (C-18) silica gel, and the mobile phases were mixtures of methanol and one of ten different
Savić Jelena S.   +4 more
doaj   +1 more source

Time delay as a key to Apoptosis Induction in the p53 Network

open access: yes, 2002
A feedback mechanism that involves the proteins p53 and mdm2, induces cell death as a controled response to severe DNA damage. A minimal model for this mechanism demonstrates that the respone may be dynamic and connected with the time needed to translate
Jensen, M. H., Sneppen, K., Tiana, G.
core   +1 more source

The role of histone modifications in transcription regulation upon DNA damage

open access: yesFEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

The Mutagenic Plasticity of the Cholera Toxin B-Subunit Surface Residues: Stability and Affinity

open access: yesToxins
Mastering selective molecule trafficking across human cell membranes poses a formidable challenge in healthcare biotechnology while offering the prospect of breakthroughs in drug delivery, gene therapy, and diagnostic imaging. The cholera toxin B-subunit
Cheuk W. Au   +5 more
doaj   +1 more source

Bottomonium dissociation in a finite density plasma

open access: yes, 2017
We present a holographic description of the thermal behavior of $ b \bar b$ heavy vector mesons inside a plasma at finite temperature and density. The meson dissociation in the medium is represented by the decrease in the height of the spectral function ...
Braga, Nelson R. F., Ferreira, Luiz F.
core   +2 more sources

Perhitungan Energi Disosiasi Gugus Fungsi OH- dan PO4 3- Hidroksiapatit dengan Pemodelan Spektroskopi Inframerah Berbasis Particle Swarm Optimization (PSO) [PDF]

open access: yes, 2013
ABSTRAK Hydroxyapatite Ca10(PO4)6(OH)2 is a calcium phosphate compound having biocompatibility properties. FTIR (Fourier Transform Infrared Spectroscopy) was used to determine the characteristics of the hydroxyapatite group.
Dahlan, Kiagus   +2 more
core   +2 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Interaction of GB1 with Metal Ions Studied by NMR Spectroscopy

open access: yesChinese Journal of Magnetic Resonance, 2018
B1 domain of staphylococcal protein G (GB1) is a widely used model protein for developing in vivo and in vitro protein structural determination methods based on paramagnetic nuclear magnetic resonance (NMR) such as pseudocontact chemical shift (PCS) and ...
CHENG Kai   +3 more
doaj   +1 more source

Quantifying H+ exchange from muscle cytosolic energy catabolism using metabolite flux and H+ coefficients from multiple competitive cation binding: New evidence for consideration in established theories

open access: yesPhysiological Reports, 2021
The purpose of this investigation was to present calculations of fractional H+ exchange (~H+e) from the chemical reactions of non‐mitochondrial energy catabolism.
Robert A. Robergs
doaj   +1 more source

Kinetic and Structural Analysis of the Mg2+ -binding Site of the Guanine Nucleotide-binding Protein p21 H-ras. [PDF]

open access: yes, 1993
The coordination and binding of the Mg2+ ion in the nucleotide−binding site of p21 have been investigated using site−directed mutagenesis, kinetic methods, and phosphorous NMR.
Borasio, Gian Domenico   +6 more
core  

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