Related Experiment Video
Updated: Mar 8, 2026
08:55
Rab10 Phosphorylation Detection by LRRK2 Activity Using SDS-PAGE with a Phosphate-binding Tag
Published on: December 14, 2017
16.2K
Discovery of Rab1 binding sites using an ensemble of clustering methods.
Suryani Lukman1, Minh N Nguyen2, Kelvin Sim3
1Khalifa University, Abu Dhabi Campus, PO Box, 127788, Abu Dhabi, United Arab Emirates.
Proteins
|January 26, 2017
Summary
Researchers identified a novel binding site on Rab1 protein, crucial for cellular processes and implicated in diseases. This discovery aids in developing targeted therapies and investigative probes for Rab1-related conditions.
Area of Science:
- Structural biology
- Biochemistry
- Molecular biology
Background:
- Rab1 protein, a Ras GTPase superfamily member, regulates autophagy and transport between the endoplasmic reticulum and Golgi apparatus.
- Dysregulation of Rab1 is linked to human cancers, neurodegenerative diseases, cardiomyopathy, and infectious diseases.
- Targeting non-native ligand-binding sites offers a strategy for developing therapeutics for proteins with common native ligands.
Purpose of the Study:
- To identify representative Rab1 protein structures using a combination of clustering methods.
- To map known and novel binding sites on Rab1 protein.
- To explore potential therapeutic targets on Rab1.
Main Methods:
- Structural analyses of Rab1 protein.
- Application of a unique ensemble of clustering methods: multi-step principal component analysis, non-negative matrix factorization, and independent component analysis.
- Mapping of binding sites on identified representative Rab1 structures in multiple ligand states.
Main Results:
- Identification of representative Rab1 protein structures through combined clustering techniques.
- Mapping of known and novel binding sites on Rab1.
- Discovery of at least one novel binding site involving Rab1-specific residues.
Conclusions:
- The identified novel binding site on Rab1 presents a potential target for drug development.
- Further exploration of this site could lead to the rational design of investigative probes and therapeutic small molecules.
- This study enhances our understanding of Rab1 structure and function for therapeutic intervention.
Related Concept Videos
01:14Rab Proteins
5.3K
Rab proteins constitute the largest family of monomeric GTPases, of which 70 members are present in humans. Rab proteins and their effectors regulate consecutive stages of vesicle transport such as vesicle transport, docking, and fusion to the correct recipient membrane.
Rab proteins switch between a cytosolic, GDP-bound inactive state and a membrane-anchored, GTP-bound active state. By themselves, Rabs show slow rates of GDP/GTP exchange and GTP hydrolysis. Thus, Rab proteins are considered...
Rab proteins switch between a cytosolic, GDP-bound inactive state and a membrane-anchored, GTP-bound active state. By themselves, Rabs show slow rates of GDP/GTP exchange and GTP hydrolysis. Thus, Rab proteins are considered...
5.3K
01:25Rab Cascades
3.7K
Rab GTPases act in a regulated cascade during membrane fusion, helping the lipid bilayers mix. The Rab family of proteins are active when bound to GTP, and inactive when bound to GDP. Hence, they act as guanine nucleotide-dependent molecular switches. Rab-GTP recognizes and binds to long or short-range tethering proteins to capture the target vesicle. These tethers coordinate with SNAREs on the vesicle and the target membrane to assemble the trans SNARE complex that locks the mixing bilayers.
3.7K
01:49Conserved Binding Sites
5.3K
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
5.3K
02:04Protein-protein Interfaces
14.9K
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
14.9K
02:40Ligand Binding Sites
15.5K
Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
15.5K