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TitleAllosteric effects of the coupling cation in melibiose transporter MelB.
Journal, issue, pagesElife, Vol. 14, Year 2026
Publish dateMay 12, 2025 (structure data deposition date)
AuthorsHariharan, P. / Shi, Y. / Bakhtiiari, A. / Liang, R. / Viner, R. / Guan, L.
External linksElife / PubMed:41604452
MethodsX-ray diffraction
Resolution2.6 - 3.68 Å
Structure data

PDB-9old:
Crystal structure of alpha-NPG-bound D59C MelBSt
Method: X-RAY DIFFRACTION / Resolution: 2.6 Å

PDB-9oli:
Crystal structure of the melibiose-bound melibiose transporter
Method: X-RAY DIFFRACTION / Resolution: 3.05 Å

PDB-9olp:
Crystal structure of a raffinose-bound D59C MelB
Method: X-RAY DIFFRACTION / Resolution: 3.4 Å

PDB-9olr:
Crystal structure of D59C MelB st bound with alpha-methyl galactoside (aMG)
Method: X-RAY DIFFRACTION / Resolution: 3.68 Å

Chemicals

ChemComp-1PE:
PENTAETHYLENE GLYCOL / precipitant*YM

ChemComp-9PG:
4-nitrophenyl alpha-D-galactopyranoside

ChemComp-HOH:
WATER

ChemComp-AMG:
methyl alpha-D-galactopyranoside

Source
  • salmonella enterica subsp. enterica serovar typhimurium (bacteria)
  • salmonella enterica subsp. enterica serovar typhimurium str. 101966 (bacteria)
KeywordsMEMBRANE PROTEIN / Cation-coupled symporter / sugar binding / MFS / melibiose binding / raffinose / transporter / ligand binding / alpha methyl galactoside / symporter

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