Related Experiment Video
Updated: Jun 22, 2025
12:24
DNA-affinity-purified Chip DAP-chip Method to Determine Gene Targets for Bacterial Two component Regulatory Systems
Published on: July 21, 2014
16.7K
Targeting New Functions and Applications of Bacterial Two-Component Systems
Shixia Ji1,2, Conggang Li1,2, Maili Liu1,2
1Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China.
Chembiochem : a European Journal of Chemical Biology
|July 5, 2024
Summary
Two-component signal transduction systems (TCSs) regulate cellular processes in bacteria and eukaryotes. Recent studies explore their His-Asp phosphotransfer mechanism, ATP synthesis, and applications in drug design and biosensors.
Area of Science:
- Microbiology
- Molecular Biology
- Biochemistry
Background:
- Two-component signal transduction systems (TCSs) are crucial regulatory networks found in prokaryotes and some eukaryotes.
- These systems mediate cellular responses to environmental stimuli through phosphotransfer signaling.
- Mammalian cells do not possess TCSs, highlighting their distinct biological roles.
Purpose of the Study:
- To review recent investigations into TCS mechanisms, focusing on the His-Asp phosphotransfer pathway.
- To explore the ATP synthesis function of TCSs.
- To discuss potential applications of TCSs in antimicrobial drug design and cellular biosensor development.
Main Methods:
- This concept paper synthesizes findings from recent functional and mechanistic studies on various TCSs.
- It focuses on reviewing established knowledge and proposing future research directions.
- No new experimental data were generated; it is a review and perspective piece.
Main Results:
- TCSs utilize a conserved His-Asp phosphotransfer mechanism for signal relay.
- These systems have implications for ATP synthesis, suggesting novel energy-related functions.
- Recent research provides insights into protein allostery within TCSs.
Conclusions:
- Understanding TCS mechanisms offers opportunities for innovative antimicrobial drug design.
- TCSs can be engineered into sophisticated cellular biosensors for various applications.
- Future research on TCSs holds promise for advancing our knowledge of cellular regulation and biotechnology.
Related Concept Videos
01:30Bacterial Signaling
32.0K
Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...
32.0K
02:53CRISPR and crRNAs
16.9K
Bacteria and archaea are susceptible to viral infections just like eukaryotes; therefore, they have developed a unique adaptive immune system to protect themselves. Clustered regularly interspaced short palindromic repeats and CRISPR-associated proteins (CRISPR-Cas) are present in more than 45% of known bacteria and 90% of known archaea.
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
16.9K
01:29Cytoskeletal Proteins in Bacteria
3.4K
Bacterial cells were initially considered simple, randomly organized structures lacking a cytoskeleton. However, the discovery of cytoskeleton homologs in bacteria led to the change of this opinion. Bacterial cytoskeletal filaments regulate the cell shape, cell polarity, cell division, and partitioning of plasmids during cell division. It was later discovered that bacterial cytoskeletal proteins, mainly actin and tubulin homologs, are diverse compared to their eukaryotic counterparts. On the...
3.4K
01:57Protein Complexes with Interchangeable Parts
2.5K
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
2.5K
01:20The Central Dogma
21.1K
The central dogma explains the flow of genetic information from DNA nucleotides to the amino acid sequence of proteins.
RNA is the Missing Link Between DNA and Proteins
In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...
RNA is the Missing Link Between DNA and Proteins
In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...
21.1K
01:31Defense Against Bacterial Pathogens
1.4K
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
1.4K