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Tiny worm, giant leap: Discovery of highly specific fatty acid attachment to proteins

January 23, 2024
in Science
Tiny worm, giant leap: Discovery of highly specific fatty acid attachment to proteins
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Tiny worm, giant leap: Discovery of highly specific fatty acid attachment to proteins

Fluorescence imaging of C. elegans fed with a new chemical probe developed in this study—a branched-chain fatty acid analog. The red signal derives from selective “click chemistry” reaction between the probe and a red fluorescent dye. Credit: Schroeder Lab/Boyce Thompson Institute

In a world where the intricacies of molecular biology often seem as vast and mysterious as the cosmos, a new study delves into the microscopic universe of proteins, unveiling a fascinating aspect of their existence. This revelation could hold profound implications for the understanding and treatment of a myriad of human diseases.

Imagine proteins as tiny engines driving the machinery of life. Just as engines require modifications to optimize performance, proteins undergo “protein modification”—a crucial process altering their function, location, and lifespan. A key player in this modification process is protein fatty acid attachment (“protein fatty acylation”), akin to adding a specialized component (i.e., fatty acids) that allows proteins to anchor themselves to cellular membranes.

Through meticulous investigation using high-resolution mass spectrometry, scientists from the Boyce Thompson Institute (BTI) have discovered critical patterns of fatty acid attachment in the model organism C. elegans, a microscopic worm that offers a window into fundamental biological processes.

The researchers, harnessing the power of “click chemistry”—a technique celebrated with two Nobel Prizes in Chemistry—successfully mapped how different amino acids in proteins are specifically modified with various fatty acids. Their work is published in the journal Proceedings of the National Academy of Sciences.

“We were surprised to discover that different amino acids are modified with fatty acids from distinct biosynthetic pathways,” wrote Frank Schroeder, a professor at BTI and senior author of the study. “This unexpected finding highlights the link between protein modification and specific fat metabolic pathways. It also serves as a foundation for further research into how protein function is affected by different fatty acids and their metabolism.”

The study, titled “Amino acid and protein specificity of protein fatty acylation in C. elegans,” is not just about understanding the inner workings of a tiny worm. The implications are vast and deeply relevant to human health. Protein fatty acid attachment is a critical factor in diseases ranging from cancer to neurodegeneration, cardiovascular disorders, and even infectious diseases.

“What we learn from C. elegans contributes significantly to our fundamental understanding of this type of protein modification,” said Bingsen Zhang, a graduate student in the Schroeder lab and first author of the study. “The more we understand protein modification and function, the better we understand its central role for human health and disease.”

Moreover, the study reveals the first example of abundant protein modification with branched-chain fatty acids—a finding that might have parallels in higher animals and humans, given their presence in our diet and production by gut microbiomes. The connection between diet, gut health, and protein modification could open new avenues in nutritional science.

Ultimately, this study is about the fundamental processes that keep every creature alive, from microscopic worms to humans. So next time you see a worm, give a nod to the unlikely hero of biology and the scientists who are uncovering its secrets. Because sometimes, the key to life’s biggest mysteries lies in its tiniest inhabitants.

More information:
Bingsen Zhang et al, Amino acid and protein specificity of protein fatty acylation in C. elegans, Proceedings of the National Academy of Sciences (2024). DOI: 10.1073/pnas.2307515121

Citation:
Tiny worm, giant leap: Discovery of highly specific fatty acid attachment to proteins (2024, January 22)
retrieved 22 January 2024
from https://phys.org/news/2024-01-tiny-worm-giant-discovery-highly.html

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part may be reproduced without the written permission. The content is provided for information purposes only.

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