Cryo-EM reveals eight structures of human UGCG enzyme and primate-specific regulation
Researchers solved eight cryo-EM structures of human UGCG, the enzyme that gatekeeps glycosphingolipid synthesis, capturing it alone and bound to substrates, products and the drugs miglustat, ibiglustat and eliglustat. The team also ran molecular dynamics simulations and a cross-species sequence comparison spanning platypus, marsupials, elephants and other mammals to trace how UGCG regulation evolved, finding features unique to primates. All structural data, simulation files and sequences have been deposited in public repositories.
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UGCG controls production of glycosphingolipids, lipids implicated in cancer drug resistance and lysosomal storage disorders, making it a target for existing therapies like eliglustat. Detailed structural snapshots of the enzyme bound to these drugs could guide design of more precise or potent inhibitors, while the evolutionary analysis clarifies why human regulation of this pathway differs from other mammals.
- Eight cryo-EM structures of UGCG were solved, including complexes with three clinical inhibitor drugs
- Molecular dynamics simulations and structural comparisons reveal how the enzyme functions and evolved
- Cross-species sequence analysis shows primate-specific regulatory features of this glycosphingolipid-controlling enzyme
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Published there as: “Primate-specific regulation of the human glycosphingolipid gatekeeper UGCG”
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