AI Solves a 50-Year Mystery: Finding the Hidden Blueprint of 'Bad Cholesterol'

When you receive your health checkup results, one item particularly stands out: ‘LDL cholesterol.’ Commonly referred to as ‘bad cholesterol,’ this substance is notorious for sticking to blood vessel walls like glue, narrowing the passages and acting as the primary culprit behind heart disease. However, there is one surprising fact: for the past 50 years, scientists have never properly seen the identity—the specific blueprint—of this ‘villain.’

A powerful ally has recently appeared for humanity, which has been fighting an invisible enemy. It is ‘AlphaFold,’ an artificial intelligence from Google DeepMind. AlphaFold has clearly revealed the core structure of bad cholesterol, which had remained unsolved for 50 years, down to the atomic level. The decisive weakness that can tear down the massive fortress of heart disease—the world’s number one cause of death—is finally in our hands. Revealing a key protein behind heart disease - ONMINE

Why is this important?

Heart disease is a terrifying illness that claims tens of millions of lives worldwide every year. Revealing a key protein behind heart disease - ONMINE What we commonly call low-density lipoprotein (LDL) is like a truck transporting fat on the roads of our bloodstream. However, when these trucks break down and pile up in the blood vessels, fatal diseases such as atherosclerosis begin. AlphaFold Reveals a Key Protein Behind Heart Disease — Google DeepMind

To use an analogy, previous treatments were similar to wandering around a crime scene without even a composite sketch of the suspect. We have been creating medicine without knowing the exact face, physique, or even the weaknesses of the enemy. However, the protein structure revealed by AI this time will serve as an unfailing ‘precision scope’ in developing future heart disease treatments. AlphaFold Reveals a Key Protein Behind Heart Disease

Understanding it easily: The Exoskeleton of ‘Bad Cholesterol’

The main protagonist of this discovery is a protein called ApoB100. The name may be unfamiliar, but its role in our bodies is very interesting.

1. The Exoskeleton of the Protein World

Imagine this. When setting up a tent, the most important thing is not the fabric, but the sturdy ‘poles’ that support it. ApoB100 acts as the ‘molecular-level scaffold’ or ‘exoskeleton’ that maintains the shape of bad cholesterol (LDL). A protein at the heart of heart disease | ScienceDaily Simply put, this skeleton is necessary for cholesterol to form clusters and swim through the blood. AlphaFold Reveals a Key Protein Behind Heart Disease — Google DeepMind

2. Ultra-HD 3D Photos Produced by AI

ApoB100 was so massive and complex that existing microscopes or experimental methods could not capture its entire appearance. Professor Zachary Berndsen of the University of Missouri (Mizzou) even described this problem as a “stubborn scientific challenge.” AlphaFold Reveals a Key Protein Behind Heart Disease

But AlphaFold, the AI, was different. Based on information from tens of thousands of amino acids that make up the protein, it instantly calculated how they fold and twist to create a three-dimensional shape. AI has drawn the ‘true face of bad cholesterol’ that had been hidden in the fog for 50 years in one go. AlphaFold Reveals a Key Protein Behind Heart Disease

How far have we come: The Protein Avengers protecting our bodies

If ApoB100 revealed the identity of the villain, scientists are also uncovering the secrets of other ‘good proteins’ that protect our bodies one after another.

Energy Metabolism Manager ANGPTL4: Researchers at Yale University are focusing on the ANGPTL4 protein, which regulates fat metabolism. Simply put, it is the manager of fat in our bodies, and by controlling this protein well, it is expected that we can tackle both diabetes and heart disease simultaneously. [Study probes the role of key protein linked to heart disease, diabetes

Yale News](https://news.yale.edu/2018/03/22/study-probes-role-key-protein-linked-heart-disease-diabetes)

Heart Cell Bodyguard AIMP3: A research team at Brown University discovered that if the AIMP3 protein disappears, the heart rapidly fails. This means this protein is an essential guardian that supports our heart so it can keep beating without stopping. Molecular-level discovery about heart mechanisms could lead to new …
Cell Drain Manager TMEM65: Researchers at Temple University identified the TMEM65 protein, which pumps out excess calcium from the mitochondria (energy factories) in heart cells to prevent it from accumulating too much. This provides a new clue not only for heart disease but also for Alzheimer’s treatment. Discovery of Mitochondrial Protein Opens Path to Therapeutic …

Future Changes: Will there be a future without heart disease?

This discovery of the ApoB100 structure is evaluated as an innovation that will remain in human history, enough to be published in ‘Nature,’ the world’s top scientific journal. A protein at the heart of heart disease - showme.missouri.edu With this precise map in hand, we will now face the following changes:

Ultra-precise drugs without side effects: We can design sophisticated drugs that prevent bad cholesterol trucks from parking (attaching) to blood vessel walls or help them be disposed of faster by the liver. AlphaFold Reveals a Key Protein Behind Heart Disease — Google DeepMind

Disease Early Warning Systems: Through AI learning technology, diagnostic methods that can warn “You may soon have a myocardial infarction, so please be careful” just by looking at protein changes in the blood will become possible. [Identification of key proteins and pathways in myocardial infarction using machine learning approaches

Scientific Reports](https://www.nature.com/articles/s41598-025-04401-w)

Precision Medicine Just for Me: An era of ‘personalized medicine’ will open, where treatment strategies are established to work best for my body, tailored to protein structures that differ slightly from person to person. Integrative proteomic analyses across common cardiac diseases yield …

AI Perspective (A word from MindTickleBytes AI)
Imagine this. Scientists who were groping walls in a dark maze to find an exit have been given a powerful flashlight called AI. Now, we are looking down at the entire map of the maze from above. While in the past we found effective drugs ‘by luck,’ we have now entered an era where we solve problems ‘precisely’ by looking at the protein map. A future where we enjoy delicious food and live long and healthy lives without worrying about heart disease is closer to us than we think.

References

AlphaFold Reveals a Key Protein Behind Heart Disease — Google DeepMind

[Study probes the role of key protein linked to heart disease, diabetes

Yale News](https://news.yale.edu/2018/03/22/study-probes-role-key-protein-linked-heart-disease-diabetes)

Revealing a key protein behind heart disease - ONMINE
AlphaFold Reveals a Key Protein Behind Heart Disease
[A protein at the heart of heart disease ScienceDaily](https://www.sciencedaily.com/releases/2025/02/250203141808.htm)
A protein at the heart of heart disease - showme.missouri.edu
AlphaFold Reveals a Key Protein Behind Heart Disease
Discovery of Mitochondrial Protein Opens Path to Therapeutic …
Molecular-level discovery about heart mechanisms could lead to new …

[Identification of key proteins and pathways in myocardial infarction using machine learning approaches