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TitleSubstrate binding plasticity revealed by Cryo-EM structures of SLC26A2.
Journal, issue, pagesNat Commun, Vol. 15, Issue 1, Page 3616, Year 2024
Publish dateApr 29, 2024
AuthorsWenxin Hu / Alex Song / Hongjin Zheng
PubMed AbstractSLC26A2 is a vital solute carrier responsible for transporting essential nutritional ions, including sulfate, within the human body. Pathogenic mutations within SLC26A2 give rise to a spectrum of ...SLC26A2 is a vital solute carrier responsible for transporting essential nutritional ions, including sulfate, within the human body. Pathogenic mutations within SLC26A2 give rise to a spectrum of human diseases, ranging from lethal to mild symptoms. The molecular details regarding the versatile substrate-transporter interactions and the impact of pathogenic mutations on SLC26A2 transporter function remain unclear. Here, using cryo-electron microscopy, we determine three high-resolution structures of SLC26A2 in complexes with different substrates. These structures unveil valuable insights, including the distinct features of the homodimer assembly, the dynamic nature of substrate binding, and the potential ramifications of pathogenic mutations. This structural-functional information regarding SLC26A2 will advance our understanding of cellular sulfate transport mechanisms and provide foundations for future therapeutic development against various human diseases.
External linksNat Commun / PubMed:38684689 / PubMed Central
MethodsEM (single particle)
Resolution3.03 - 3.55 Å
Structure data

EMDB-41427, PDB-8tnw:
Substrate Binding Plasticity Revealed by Cryo-EM Structures of SLC26A2
Method: EM (single particle) / Resolution: 3.17 Å

EMDB-41428, PDB-8tnx:
Substrate Binding Plasticity Revealed by Cryo-EM Structures of SLC26A2
Method: EM (single particle) / Resolution: 3.03 Å

EMDB-41429, PDB-8tny:
Substrate Binding Plasticity Revealed by Cryo-EM Structures of SLC26A2
Method: EM (single particle) / Resolution: 3.55 Å

Chemicals

ChemComp-CL:
Unknown entry / Chloride

ChemComp-OXL:
OXALATE ION / Oxalate

ChemComp-SO4:
SULFATE ION / Sulfate

Source
  • homo sapiens (human)
KeywordsMEMBRANE PROTEIN / SLC26A2 / sulfate transporter / human solute carrier

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