2ojx: Difference between revisions
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|SITE= | |SITE= | ||
|LIGAND= | |LIGAND= | ||
|ACTIVITY= [http://en.wikipedia.org/wiki/Polo_kinase Polo kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.11.21 2.7.11.21] | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Polo_kinase Polo kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.11.21 2.7.11.21] </span> | ||
|GENE= PLK1, PLK ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]) | |GENE= PLK1, PLK ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]) | ||
|DOMAIN= | |||
|RELATEDENTRY=[[2ogq|2OGQ]], [[2ojs|2OJS]] | |||
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ojx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ojx OCA], [http://www.ebi.ac.uk/pdbsum/2ojx PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2ojx RCSB]</span> | |||
}} | }} | ||
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[[Category: transferase]] | [[Category: transferase]] | ||
''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 04:18:52 2008'' | ||
Revision as of 04:18, 31 March 2008
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| , resolution 2.85Å | |||||||
|---|---|---|---|---|---|---|---|
| Gene: | PLK1, PLK (Homo sapiens) | ||||||
| Activity: | Polo kinase, with EC number 2.7.11.21 | ||||||
| Related: | 2OGQ, 2OJS
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Molecular and structural basis of polo-like kinase 1 substrate recognition: Implications in centrosomal localization
OverviewOverview
Polo-like kinase (Plk1) is crucial for cell cycle progression through mitosis. Here we present the molecular and structural mechanisms that regulate the substrate recognition of Plk1 and influence its centrosomal localization and activity. Our work shows that Plk1 localization is controlled not only by the polo box domain (PBD); remarkably, the kinase domain is also involved in Plk1 targeting mechanism to the centrosome. The crystal structures of the PBD in complex with Cdc25C and Cdc25C-P target peptides reveal that Trp-414 is fundamental in their recognition regardless of its phosphorylation status. Binding measurements demonstrate that W414F mutation abolishes molecular recognition and diminishes centrosomal localization. Therefore, Plk1 centrosomal localization is not controlled by His-538 and Lys-540, the residues involved in phosphorylated target binding. The different conformations of the loop, which connects the polo boxes in the apo and the PBD-Cdc25C and PBD-Cdc25C-P complex structures, together with changes in the proline adjacent to the phosphothreonine in the target peptide, suggest a regulatory mechanism to detect binding of unphosphorylated or phosphorylated target substrates. Altogether, these data propose a model for the interaction between Plk1 and Cdc25C.
About this StructureAbout this Structure
2OJX is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
ReferenceReference
Molecular and structural basis of polo-like kinase 1 substrate recognition: Implications in centrosomal localization., Garcia-Alvarez B, de Carcer G, Ibanez S, Bragado-Nilsson E, Montoya G, Proc Natl Acad Sci U S A. 2007 Feb 27;104(9):3107-12. Epub 2007 Feb 16. PMID:17307877
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