What question did this study set out to answer?

This study aims to clarify the substrate specificity of glucose transporters by investigating underlying mechanisms.

A two-step mechanism for sugar translocation

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Research reveals a two-step process for sugar transport in mammals, suggesting implications for substrate specificity.

This study aims to clarify the substrate specificity of glucose transporters by investigating underlying mechanisms.
Utilized saturation transfer difference NMR spectroscopy to distinguish between transported sugars and inhibitors.
Employed molecular dynamics simulations to explore structural changes in glucose transporters.
Engineered the sugar-binding pocket and gating helix TM7b for functional analysis.
Only transported sugars produce STD NMR signals, while glucose acts as an inhibitor.
Findings indicate that structural transitions, rather than initial binding, influence specificity in transporter function.
TM7b was identified as a critical component for occluded state formation in transporters.

Ahn et al. (2026) studied this question.

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