| Structural highlights
4bbj is a 1 chain structure with sequence from Legionella pneumophila subsp. pneumophila. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
| | Method: | X-ray diffraction, Resolution 2.75Å |
| Ligands: | , , , , |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
COPA_LEGPH Couples the hydrolysis of ATP with the export of copper.[1] [2] [3]
Publication Abstract from PubMed
Heavy metals in cells are typically regulated by PIB-type ATPases. The first structure of the class, a Cu+-ATPase from Legionella pneumophila (LpCopA), outlined a copper transport pathway across the membrane, which was inferred to be occluded. Here we show by molecular dynamics simulations that extracellular water solvated the transmembrane (TM) domain, results indicative of a Cu+-release pathway. Furthermore, a new LpCopA crystal structure determined at 2.8-A resolution, trapped in the preceding E2P state, delineated the same passage, and site-directed-mutagenesis activity assays support a functional role for the conduit. The structural similarities between the TM domains of the two conformations suggest that Cu+-ATPases couple dephosphorylation and ion extrusion differently than do the well-characterized PII-type ATPases. The ion pathway explains why certain Menkes' and Wilson's disease mutations impair protein function and points to a site for inhibitors targeting pathogens.
Copper-transporting P-type ATPases use a unique ion-release pathway.,Andersson M, Mattle D, Sitsel O, Klymchuk T, Nielsen AM, Moller LB, White SH, Nissen P, Gourdon P Nat Struct Mol Biol. 2013 Dec 8. doi: 10.1038/nsmb.2721. PMID:24317491[4]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Andersson M, Mattle D, Sitsel O, Klymchuk T, Nielsen AM, Moller LB, White SH, Nissen P, Gourdon P. Copper-transporting P-type ATPases use a unique ion-release pathway. Nat Struct Mol Biol. 2013 Dec 8. doi: 10.1038/nsmb.2721. PMID:24317491 doi:http://dx.doi.org/10.1038/nsmb.2721
- ↑ Placenti MA, Roman EA, González Flecha FL, González-Lebrero RM. Functional characterization of Legionella pneumophila Cu(+) transport ATPase. The activation by Cu(+) and ATP. Biochim Biophys Acta Biomembr. 2022 Feb 1;1864(2):183822. PMID:34826402 doi:10.1016/j.bbamem.2021.183822
- ↑ Gourdon P, Liu XY, Skjorringe T, Morth JP, Moller LB, Pedersen BP, Nissen P. Crystal structure of a copper-transporting PIB-type ATPase. Nature. 2011 Jun 29;475(7354):59-64. doi: 10.1038/nature10191. PMID:21716286 doi:10.1038/nature10191
- ↑ Andersson M, Mattle D, Sitsel O, Klymchuk T, Nielsen AM, Moller LB, White SH, Nissen P, Gourdon P. Copper-transporting P-type ATPases use a unique ion-release pathway. Nat Struct Mol Biol. 2013 Dec 8. doi: 10.1038/nsmb.2721. PMID:24317491 doi:http://dx.doi.org/10.1038/nsmb.2721
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