Crystal structure of the human glucose transporter GLUT1

Dong Deng, Chao Xu, Pengcheng Sun, Jianping Wu, Chuangye Yan, Mingxu Hu, Nieng Yan

Research output: Contribution to journalArticlepeer-review

335 Scopus citations

Abstract

The glucose transporter GLUT1 catalyses facilitative diffusion of glucose into erythrocytes and is responsible for glucose supply to the brain and other organs. Dysfunctional mutations may lead to GLUT1 deficiency syndrome, whereas overexpression of GLUT1 is a prognostic indicator for cancer. Despite decades of investigation, the structure of GLUT1 remains unknown. Here we report the crystal structure of human GLUT1 at 3.2 Å resolution. The full-length protein, which has a canonical major facilitator superfamily fold, is captured in an inward-open conformation. This structure allows accurate mapping and potential mechanistic interpretation of disease-associated mutations in GLUT1. Structure-based analysis of these mutations provides an insight into the alternating access mechanism of GLUT1 and other members of the sugar porter subfamily. Structural comparison of the uniporter GLUT1 with its bacterial homologue XylE, a proton-coupled xylose symporter, allows examination of the transport mechanisms of both passive facilitators and active transporters.

Original languageEnglish (US)
Pages (from-to)121-125
Number of pages5
JournalNature
Volume510
Issue number7503
DOIs
StatePublished - 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General

Fingerprint Dive into the research topics of 'Crystal structure of the human glucose transporter GLUT1'. Together they form a unique fingerprint.

Cite this