相关实验视频
Updated: Jul 11, 2026

15:42
Double Whole Mount in situ Hybridization of Early Chick Embryos
Published on: October 27, 2008
概括
一氧化碳重新结合于血红蛋白.
科学领域:
- 生物物理学的生物物理.
- 物理化学 物理化学
- 分子生物学分子生物学
背景情况:
- 血球蛋白的功能涉及可逆结合的连接物,如一氧化碳.
- 了解连接体重结动力学对于血红蛋白功能研究至关重要.
研究的目的:
- 为了研究一氧化碳在光解离后与血红蛋白β链重新结合的机制.
- 在这个过程中阐明从经典到量子力学行为的过渡.
主要方法:
- 使用激光闪光,从血红蛋白中对一氧化碳的光解离.
- 用光谱分析来监测不同温度下的重结动力学.
- 对温度依赖性的分析,以区分经典和量子机制.
主要成果:
- 在200K以下观察到一氧化碳与血红蛋白β链的分子内重新结合.
- 经典的跨越障碍的运动主导着25K以上的重绑.
- 量子力学道成为25K以下的主导机制.
- 一个一致的能量频谱,峰值为4.0kJ/mol,描述了这两种机制.
- 屏障宽度取决于屏障高度,以下是d(E) ≈0.05nm X (E/Epeak) ^1.5.5.
结论:
- 这项研究揭示了血红蛋白β链中的一氧化碳重结机制从经典道到量子道的转变.
- 控制这一过程的能源格局的特点是特定的能量频谱和屏障宽度取决于屏障高度.
相关概念视频
Conjugated Proteins
Simple proteins and protein complexes contain only amino acids. In contrast, many other proteins, called conjugated proteins, covalently bond with non-protein moieties.
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
Blood Transfusion and Agglutination
Blood transfusion is a therapeutic measure to restore the blood volume after extensive blood loss due to an accident or a medical procedure. Blood transfusion involves drawing a certain amount of blood from a suitable donor and infusing it into the recipient.
History
The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...
History
The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...
Southern Blot
Agarose gel electrophoresis is very useful in separating DNA fragments by size. Running a DNA ladder containing fragments of the known length alongside the sample helps determine the approximate length of the sample DNA fragments. However, additional steps are needed to verify the sequence identity of the sample DNA fragments.
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...

