The Liganding of Glycolipid Transfer Protein Is Controlled by Glycolipid Acyl Structure
2006
Glycosphingolipid–Protein Binding and Acyl Chain Length
publication
Evidence: moderate
Author Information
Author(s): Lucy Malinina, Margarita Malakhova, Rhoderick Brown, Dinshaw Patel
Hypothesis
The binding characteristics of glycolipid transfer proteins vary based on the acyl chain length of glycosphingolipids.
Conclusion
The study reveals that the length and shape of the acyl chain significantly influence the binding of sphingosine to the glycolipid transfer protein.
Supporting Evidence
- The study found that the binding of the sugar head of glycosphingolipids to the protein is consistent across different types of sugars.
- The acyl chain length affects whether the sphingosine chain can enter the protein's hydrophobic tunnel.
- Shorter acyl chains can block sphingosine entry due to the presence of an extraneous hydrocarbon.
- Longer acyl chains block sphingosine entry by curling within the tunnel.
Takeaway
This study shows that how a fat molecule fits into a protein can change depending on how long the fat is, which helps us understand how cells use these molecules.
Methodology
The authors used x-ray crystallography to determine the structure of human glycolipid transfer protein with various glycosphingolipids.
Digital Object Identifier (DOI)
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