4KY0 image
Deposition Date 2013-05-28
Release Date 2013-09-11
Last Version Date 2023-09-20
Entry Detail
PDB ID:
4KY0
Keywords:
TRANSPORT PROTEIN, membrane protein
Title:
Crystal structure of a substrate-free glutamate transporter homologue from Thermococcus kodakarensis
Biological Source:
Source Organism:
Thermococcus kodakarensis (Taxon ID: 69014)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
3.00 Å
R-Value Free:
0.26
R-Value Work:
0.21
R-Value Observed:
0.21
Space Group:
P 32 2 1
4KY0 validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Proton/glutamate symporter, SDF family
Gene (Uniprot):TK0986
Chain IDs:A, B, C
Chain Length:431
Number of Molecules:3
Biological Source:Thermococcus kodakarensis
UniProt ID:Q5JID0 Pfam ID:PF00375
Ligand Molecules
PG4
Primary Citation
Crystal structure of a substrate-free aspartate transporter.
Nat.Struct.Mol.Biol. 20 1224 1226 (2013)
PMID: 24013209 DOI: 10.1038/nsmb.2663

Abstact

Archaeal glutamate transporter homologs catalyze the coupled uptake of aspartate and three sodium ions. After the delivery of the substrate and sodium ions to the cytoplasm, the empty binding site must reorient to the outward-facing conformation to reset the transporter. Here, we report a crystal structure of the substrate-free transporter GltTk from Thermococcus kodakarensis, which provides insight into the mechanism of this essential step in the translocation cycle.

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Primary Citation of related structures
4KY0