@-tides作为分子协会的记者
Scott T Phillips1, Landy K Blasdel, Paul A Bartlett
1Center for New Directions in Organic Synthesis, Department of Chemistry, University of California, Berkeley, California 94720-1460, USA.
Journal of the American Chemical Society
|March 24, 2005
概括
1,6-dihydro-3(2H) -pyridinone单元的新型循环二元化 (CD) 签名为量化折叠和关联提供了一种敏感的方法. 这种技术在微分子度上是有效的,为beta-sheet稳定性提供了新的见解.
科学领域:
- 生物化学和生物物理学
- 有机化学 有机化学
- 分子生物学分子生物学
背景情况:
- 1,6-dihydro-3(2H) -pyridinone单元作为一种氨基酸替代品.
- 这个单元促进了寡头 (@-tides) 中扩展的β-链形态.
研究的目的:
- 为了研究vinylogous amide的圆形二元化 (CD) 签名的形状敏感性.
- 为了确定这个CD签名的实用性,作为对@-tide协会和折叠的定量衡量.
- 为了证明该方法在微分子度范围内的适用性.
主要方法:
- 使用循环二元化 (CD) 光谱学.
- 在@-unit.中分析了vinylogous amide的CD签名.
- 测量 @-潮二分化和β-hairpin 折叠平衡.
主要成果:
- 乙烯基胺的CD签名对有机和水性溶剂中的构成敏感.
- 这种灵敏度允许对潮协会和折叠进行定量评估.
- 该方法在微分子度上是有效的,超过了其他技术的局限性.
- 实现了对β-sheet稳定性相关的氨基酸侧链侧链相互作用的量化.
结论:
- 乙烯基胺的CD签名是研究形态动态学的通用工具.
- 这种方法提供了一种敏感且广泛适用的方法来分析折叠和关联.
- 这些发现为量化对β-sheet稳定性至关重要的相互作用提供了新的途径.
相关概念视频
Molecular Shapes
Molecules have characteristic shapes that are crucial for their function. The arrangement of various electron groups around the central atom dictates their molecular geometry. Electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between the electron pairs by maximizing the distance between them. The valence electrons form either bonding pairs, located primarily between bonded atoms, or lone pairs.Two regions of electron density in a diatomic...
Nucleic acids
Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes, the...
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes, the...
Positive Regulator Molecules
To consistently produce healthy cells, the cell cycle—the process that generates daughter cells—must be precisely regulated.
The DNA Helix
Overview
Reporter Genes
Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.
Commonly used reporter...
Commonly used reporter...
Noncovalent Attractions in Biomolecules
Noncovalent attractions are associations within and between molecules that influence the shape and structural stability of complexes. These interactions differ from covalent bonding in that they do not involve sharing of electrons.
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...


