Related Experiment Video
Updated: Jun 25, 2026

Comparing the Affinity of GTPase-binding Proteins using Competition Assays
Published on: October 8, 2015
RAG GTPases in nutrient-mediated TOR signaling pathway
1Department of Food Sciences and Nutrition, Catholic University of Daegu, Gyeongsan-si, Gyeongbuk, Repulic of Korea.
Amino acids are vital for cell growth, regulating protein synthesis and degradation. Researchers are uncovering how these nutrients signal to the mTORC1 pathway, with Rag GTPases playing a key role in this process.
Area of Science:
- Biochemistry
- Cell Biology
- Molecular Biology
Background:
- Amino acids are essential nutrients crucial for protein synthesis and metabolic functions.
- Amino acids directly influence protein synthesis, degradation, and cellular growth.
- The mammalian target of rapamycin complex 1 (mTORC1) pathway is central to regulating cell growth.
Purpose of the Study:
- To elucidate the mechanism by which amino acids activate mTORC1.
- To identify the key molecular players involved in amino acid sensing and signaling to mTORC1.
Main Methods:
- Investigated the role of Rag small GTPases in amino acid-mediated mTORC1 activation.
- Utilized molecular biology techniques to study signaling pathways.
Main Results:
- Rag small GTPases have been identified as critical mediators of amino acid signals.
- These GTPases act as a bridge, transmitting amino acid availability information to mTORC1.
Conclusions:
- Rag GTPases are essential components in the amino acid sensing pathway that activates mTORC1.
- Understanding this mechanism provides insight into cellular growth regulation and metabolic control.
More Related Videos
09:40Imaging G-protein Coupled Receptor (GPCR)-mediated Signaling Events that Control Chemotaxis of Dictyostelium Discoideum
Published on: September 20, 2011
13:51Detection of Small GTPase Prenylation and GTP Binding Using Membrane Fractionation and GTPase-linked Immunosorbent Assay
Published on: November 11, 2018
Related Concept Videos
Activation and Inactivation of G Proteins
Small GTPases - Ras and Rho
Three regulatory proteins control their activity:
GTPases and their Regulation
Large G-proteins, also known...
GTPases and their Regulation
Large G-proteins, also known...
PI3K/mTOR/AKT Signaling Pathway
mTOR Signaling and Cancer Progression
The mTOR pathway or the...