6533b835fe1ef96bd129f5d8
RESEARCH PRODUCT
A phosphorylation cycle shapes gradients of the DYRK family kinase Pom1 at the plasma membrane.
Kyriakos KokkorisVincent VincenzettiJosselin MoosbruggerOlivier HachetSophie G. MartinMartine Berthelot-grosjeanMartine Berthelot-grosjeansubject
MESH : Molecular Sequence Data[SDV]Life Sciences [q-bio]CellMESH: Cell CycleMESH: Amino Acid SequenceAmino Acid Sequence; Cell Cycle; Cell Membrane/metabolism; Microtubule-Associated Proteins/metabolism; Molecular Sequence Data; Phosphorylation; Protein Kinases/chemistry; Protein Kinases/metabolism; Schizosaccharomyces/cytology; Schizosaccharomyces/metabolism; Schizosaccharomyces pombe Proteins/metabolism; Sequence AlignmentMESH : Phosphorylation0302 clinical medicinePhosphorylation0303 health sciencesKinaseMESH : Amino Acid SequenceMESH : Sequence AlignmentCell CycleCortical gradientMESH : Schizosaccharomyces pombe ProteinsFission yeastCell biologymedicine.anatomical_structureMESH: SchizosaccharomycesPom1PhosphorylationMicrotubule-Associated ProteinsMESH : Cell MembraneMolecular Sequence DataMESH: Sequence AlignmentMESH : Protein KinasesBiologyGeneral Biochemistry Genetics and Molecular BiologyPom1Dephosphorylation03 medical and health sciencesMicrotubuleMESH : Cell CycleSchizosaccharomycesCell cortexmedicineAmino Acid SequenceMitosisMESH: Protein Kinases030304 developmental biologyMESH: Molecular Sequence Data[ SDV ] Life Sciences [q-bio]Phosphorylation cycleMESH: PhosphorylationBiochemistry Genetics and Molecular Biology(all)Cell MembraneMESH: Schizosaccharomyces pombe ProteinsMESH: Microtubule-Associated ProteinsMESH : SchizosaccharomycesMESH : Microtubule-Associated ProteinsSchizosaccharomyces pombe ProteinsDYRK family kinaseProtein KinasesSequence Alignment030217 neurology & neurosurgeryMESH: Cell Membranedescription
http://linkinghub.elsevier.com/; International audience; Concentration gradients regulate many cell biological and developmental processes. In rod-shaped fission yeast cells, polar cortical gradients of the DYRK family kinase Pom1 couple cell length with mitotic commitment by inhibiting a mitotic inducer positioned at midcell. However, how Pom1 gradients are established is unknown. Here, we show that Tea4, which is normally deposited at cell tips by microtubules, is both necessary and, upon ectopic cortical localization, sufficient to recruit Pom1 to the cell cortex. Pom1 then moves laterally at the plasma membrane, which it binds through a basic region exhibiting direct lipid interaction. Pom1 autophosphorylates in this region to lower lipid affinity and promote membrane release. Tea4 triggers Pom1 plasma membrane association by promoting its dephosphorylation through the protein phosphatase 1 Dis2. We propose that local dephosphorylation induces Pom1 membrane association and nucleates a gradient shaped by the opposing actions of lateral diffusion and autophosphorylation-dependent membrane detachment.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-06-24 |