2hc8: Difference between revisions
No edit summary |
No edit summary |
||
| Line 7: | Line 7: | ||
|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
|DOMAIN= | |||
|RELATEDENTRY= | |||
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2hc8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hc8 OCA], [http://www.ebi.ac.uk/pdbsum/2hc8 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2hc8 RCSB]</span> | |||
}} | }} | ||
| Line 32: | Line 35: | ||
[[Category: copper]] | [[Category: copper]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 03:28:24 2008'' | ||
Revision as of 03:28, 31 March 2008
| |||||||
| , resolution 1.650Å | |||||||
|---|---|---|---|---|---|---|---|
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Structure of the A. fulgidus CopA A-domain
OverviewOverview
Copper homeostasis is maintained in part by membrane-bound P(1B)-type ATPases that are found in all organisms and drive the transport of this essential, yet toxic, metal ion across cellular membranes. CopA from Archaeoglobus fulgidus is a hyperthermophilic member of this ATPase subfamily and is homologous to the human Wilson and Menkes disease ATPases. To gain insight into Cu(+)-ATPase function, the structure of the CopA actuator domain (A-domain) was determined to 1.65 A resolution. The CopA A-domain functions to couple ATP hydrolysis in the ATP binding domain (ATPBD) with structural rearrangements of critical transmembrane segments. Its fold is quite similar to that of the sarcoplasmic reticulum Ca(2+)-ATPase (SERCA1) A-domain, with the exception of an external loop region. On the basis of sequence and structural comparisons, specific residues that probably interact with the CopA ATPBD have been identified. Comparisons to the Wilson and Menkes disease A-domains reveal the presence of an additional loop that may be associated with regulatory functions in eukaryotic Cu(+)-ATPases. Finally, several mutations in the Wilson and Menkes disease ATPases occur in the A-domain, and their likely effects on function can be inferred from the CopA A-domain structure.
About this StructureAbout this Structure
2HC8 is a Single protein structure of sequence from Archaeoglobus fulgidus. Full crystallographic information is available from OCA.
ReferenceReference
Structure of the actuator domain from the Archaeoglobus fulgidus Cu(+)-ATPase., Sazinsky MH, Agarwal S, Arguello JM, Rosenzweig AC, Biochemistry. 2006 Aug 22;45(33):9949-55. PMID:16906753
Page seeded by OCA on Mon Mar 31 03:28:24 2008