ISDA

Deposition Date 2011-12-22

Release Date 2012-02-15

Last Version Date 2024-02-28

Entry Detail

PDB ID:

3V8G

Keywords:

TRANSPORT PROTEIN

Title:

Crystal structure of an asymmetric trimer of a glutamate transporter homologue (GltPh)

Biological Source:

Source Organism:

Pyrococcus horikoshii (Taxon ID: 70601)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

4.66 Å

R-Value Free:

0.29

R-Value Work:

0.25

R-Value Observed:

0.25

Space Group:

C 1 2 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:sodium-coupled L-aspartate transporter
Gene (Uniprot):PH1295
Mutations:D37H, K40H, K125H, K132H, V198C, K223H, K264H, C321A, A380C, E368H
Chain IDs:A, B, C, D, E, F
Chain Length:422
Number of Molecules:6
Biological Source:Pyrococcus horikoshii

UniProt ID:O59010 Pfam ID:PF00375

Ligand Molecules

ASP

Primary Citation

Crystal structure of an asymmetric trimer of a bacterial glutamate transporter homolog.

Verdon, G, Boudker, O.Show

Nat.Struct.Mol.Biol. 19 355 357 (2012)

PMID: 22343718 DOI: 10.1038/nsmb.2233

Abstact

We report a structure of a trimeric glutamate transporter homolog from Pyrococcus horikoshii with two protomers in an inward facing state and the third in an intermediate conformation between the outward and inward facing states. The intermediate shows a cavity in the thinnest region of the transporter, which is potentially accessible to extracellular and cytoplasmic solutions. Our findings suggest a structural principle by which transport intermediates may mediate uncoupled permeation of polar solutes.

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Primary Citation of related structures