石与 siderophores 相遇:热力学见解与Desferrioxamine B 和 E 的 Bi (III) 复合体
Klaudia Szczerba1, Wiktoria Jonczyk1, Adriana Knoll2
1Faculty of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland.
Journal of inorganic biochemistry
|March 13, 2026
概括
赛德罗 (Siderophores) 的desferrioxamine B (DFOB) 和desferrioxamine E (FOXE) 能够有效合双 (Bi(III)) 离子. 这增强了比斯木斯的作用.
科学领域:
- 药用化学 医学化学
- 无机化学 无机化学 有机化学
- 微生物学 微生物学
背景情况:
- 双 (Bi(III)) 离子对于根除Helicobacter pylori和克服抗生素耐药性至关重要.
- 比斯的有效性依赖于特洛伊木马机制,通过模仿铁进入细菌细胞.
- 赛德罗可以改善斯木的低生物可用性,用于增强治疗应用.
研究的目的:
- 为了确定desferrioxamine B (DFOB) 和desferrioxamine E (FOXE) 对Bi(III) 离子的结合性特性.
- 在广泛的pH范围内研究Bi(III) - siderophore复合体的固态度,热力学稳定性和物种化.
主要方法:
- 电子喷雾电离质谱仪 (ESI-MS) 是一种电子喷雾电离质谱仪.
- 电位计学是指电位计学的方法.
- 紫外线-紫外线光谱学
- 在广泛的pH范围内进行复杂化建模.
主要成果:
- 确定了DFOB和FOXE的单核二和三胺复合体,具有Bi (III).
- 与DFOB相比,FOXE对Bi (III) 的合能力更强.
- 两种 siderophores 均表现出高稳定常数和 pBi 值,表明有效的 Bi (III) 化.
结论:
- 德斯费里奥克萨明B和E是有效的Bi (III) 化剂,解决了水的水性化学中的挑战.
- 这些 siderophores 显示了针对性抗微生物输送系统的潜力.
- 生物三体复合物是213Bi放射标记的有希望的候选者,用于高级感染治疗.
更多相关视频
10:45Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition
Published on: February 5, 2022
4.7K
08:31Anaerobic Protein Purification and Kinetic Analysis via Oxygen Electrode for Studying DesB Dioxygenase Activity and Inhibition
Published on: October 3, 2018
9.0K
相关概念视频
03:45Formation of Complex Ions
26.5K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
26.5K
03:02Colors and Magnetism
14.4K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
14.4K
01:30Ladder Diagrams: Redox Equilibria
844
Ladder diagrams are useful tools for understanding redox equilibrium reactions, especially the effects of concentration changes on the electrochemical potential of the reaction. The vertical axis in the redox ladder diagrams represents the electrochemical potential, E. The area of predominance is demarcated using the Nernst equation.
Consider the Fe3+/Fe2+ half-reaction, which has a standard-state potential of +0.771 V. At potentials more positive than +0.771 V, Fe3+ predominates, whereas Fe2+...
Consider the Fe3+/Fe2+ half-reaction, which has a standard-state potential of +0.771 V. At potentials more positive than +0.771 V, Fe3+ predominates, whereas Fe2+...
844
02:42Valence Bond Theory
11.5K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
11.5K
01:43Electron Transport Chain: Complex III and IV
9.6K
During the electron transport chain, electrons from NADH and FADH2 are first transferred to complexes I and II, respectively. These two complexes then transfer the electrons to ubiquinol, which carries them further to complex III. Complex III passes the electrons across the intermembrane space to Cyt c, which carries them further to complex IV. Complex IV donates electrons to oxygen and reduces it to water. As electrons pass through complexes I, III, and IV, the energy released aids the pumping...
9.6K
02:58Crystal Field Theory - Octahedral Complexes
31.5K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
31.5K