Related Experiment Video
Updated: Jan 14, 2026
12:04
Human Neuroendocrine Tumor Cell Lines as a Three-Dimensional Model for the Study of Human Neuroendocrine Tumor Therapy
Published on: August 14, 2012
29.4K
Decoding steroid-derived metabolite engineering in Solanum.
Farah Kanwal1, Sana Ullah1, Yingchen Hao1
1National Key Laboratory for Tropical Crop Breeding, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China.
Horticulture Research
|October 22, 2025
Summary
The GAME15 protein, a key enzyme in steroidal glycoalkaloid and steroidal saponin biosynthesis, advances metabolic engineering. This discovery enables the development of pest-resistant crops and novel pharmaceutical applications.
Area of Science:
- Plant biochemistry and metabolic engineering.
- Molecular mechanisms of plant defense compounds.
Background:
- Steroidal glycoalkaloids (SGAs) and steroidal saponins (STSs) are crucial for plant defense and have pharmaceutical uses.
- Common biosynthetic pathways in *Solanum* originate from a furostanol scaffold.
- Previous metabolic engineering attempts for SGAs/STSs were unsuccessful despite identifying GLYCOALKALOID METABOLISM (GAME) genes.
Purpose of the Study:
- To review the molecular mechanisms and functional dynamics of *GAME* genes.
- To highlight the pivotal role of the GAME15 protein in SGA and STS metabolism.
- To discuss the implications for metabolic engineering, crop improvement, and the pharmaceutical industry.
Main Methods:
- Review of existing literature on *GAME* genes and their enzymatic functions.
- Focus on the dual enzymatic roles and metabolic scaffolding of the GAME15 protein.
- Analysis of GAME15's contribution to metabolite channeling and pathway regulation.
Main Results:
- The GAME15 protein possesses dual enzymatic roles (glucuronosyltransferase) and acts as a metabolic scaffold.
- GAME15 is identified as a key "game changer" gene in SGA and STS biosynthesis.
- This protein's function unlocks complexities in cholesterol metabolism within the pathway.
Conclusions:
- The GAME15 protein's unique functions offer significant potential for advancing metabolic engineering in crops.
- This discovery paves the way for developing pest-resistant crop varieties.
- Future research should focus on regulatory mechanisms and enzyme structural aspects for further applications.
Related Concept Videos
01:14Drug Metabolism: Phase II Reactions
4.9K
Phase II reactions are essential for the detoxification and elimination of drugs from the body. These reactions involve the conjugation of parent drugs or their phase I metabolites with endogenous molecules, resulting in more hydrophilic drug conjugates. The primary conjugation reactions in this phase are sulfation and glucuronidation. Both sulfation and glucuronidation typically produce biologically inactive metabolites. However, in some cases involving prodrugs, active metabolites may be...
4.9K
01:20The Central Dogma
31.8K
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...
31.8K
01:25Insulin: Biosynthesis, Chemistry, and Preparation
1.2K
The endoplasmic reticulum (ER) of pancreatic β-cells synthesizes preproinsulin, which consists of a signal peptide, A and B chains, and a C-peptide. Preproinsulin is then cleaved and folded into proinsulin, which translocates to the Golgi apparatus for sorting and packaging into secretory granules. In these granules, enzymatic clipping generates insulin and C-peptide.
Damage or functional impairment of β-cells inhibits insulin production, leading to diabetes. Diabetes treatment...
Damage or functional impairment of β-cells inhibits insulin production, leading to diabetes. Diabetes treatment...
1.2K
01:26Signal Transduction: Overview
11.4K
Cells respond to many types of information, often through receptor proteins positioned on the membrane. They respond to chemical signals, such as hormones, neurotransmitters, and other signaling molecules, initiating a series of molecular reactions to produce an appropriate response. This is called signal transduction. Cells also coordinate different responses elicited by the same signaling molecule via mediators, allowing molecular cross-talk.
Typically, signal transduction involves three...
Typically, signal transduction involves three...
11.4K
01:31Transducer Mechanism: Nuclear Receptors
2.4K
Nuclear receptors, or NRs, are unique transcription factors that regulate gene transcription and affect the cellular pathways involved in reproduction, development, or metabolism. Their ability to be stimulated by small lipophilic ligands and control vital cellular processes makes them ideal drug targets. Nearly 10-15% of currently prescribed drugs target these receptors.
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes:
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes:
2.4K