Periodic changes in phosphorylation of the Xenopus cdc25 phosphatase regulate its activity.

Abstract:

:The cdc25 tyrosine phosphatase is known to activate cdc2 kinase in the G2/M transition by dephosphorylation of tyrosine 15. To determine how entry into M-phase in eukaryotic cells is controlled, we have investigated the regulation of the cdc25 protein in Xenopus eggs and oocytes. Two closely related Xenopus cdc25 genes have been cloned and sequenced and specific antibodies generated. The cdc25 phosphatase activity oscillates in both meiotic and mitotic cell cycles, being low in interphase and high in M-phase. Increased activity of cdc25 at M-phase is accompanied by increased phosphorylation that retards electrophoretic mobility in gels from 76 to 92 kDa. Treatment of cdc25 with either phosphatase 1 or phosphatase 2A removes phosphate from cdc25, reverses the mobility shift, and decreases its ability to activate cdc2 kinase. Furthermore, the addition of okadaic acid to egg extracts arrested in S-phase by aphidicolin causes phosphorylation and activation of the cdc25 protein before cyclin B/cdc2 kinase activation. These results demonstrate that the activity of the cdc25 phosphatase at the G2/M transition is directly regulated through changes in its phosphorylation state.

journal_name

Mol Biol Cell

authors

Izumi T,Walker DH,Maller JL

doi

10.1091/mbc.3.8.927

keywords:

subject

Has Abstract

pub_date

1992-08-01 00:00:00

pages

927-39

issue

8

eissn

1059-1524

issn

1939-4586

journal_volume

3

pub_type

杂志文章
  • Identification of seven rat axonemal dynein heavy chain genes: expression during ciliated cell differentiation.

    abstract::Axonemal dyneins are molecular motors that drive the beating of cilia and flagella. We report here the identification and partial cloning of seven unique axonemal dynein heavy chains from rat tracheal epithelial (RTE) cells. Combinations of axonemal-specific and degenerate primers to conserved regions around the catal...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.7.1.71

    authors: Andrews KL,Nettesheim P,Asai DJ,Ostrowski LE

    更新日期:1996-01-01 00:00:00

  • A guide to simple and informative binding assays.

    abstract::The aim of binding assays is to measure interactions between two molecules, such as a protein binding another protein, a small molecule, or a nucleic acid. Hard work is required to prepare reagents, but flaws in the design of many binding experiments limit the information obtained. In particular many experiments fail ...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E10-08-0683

    authors: Pollard TD

    更新日期:2010-12-01 00:00:00

  • Cytoplasmic flows as signatures for the mechanics of mitotic positioning.

    abstract::The proper positioning of mitotic spindle in the single-cell Caenorhabditis elegans embryo is achieved initially by the migration and rotation of the pronuclear complex (PNC) and its two associated astral microtubules (MTs). Pronuclear migration produces global cytoplasmic flows that couple the mechanics of all MTs, t...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E16-02-0108

    authors: Nazockdast E,Rahimian A,Needleman D,Shelley M

    更新日期:2017-11-07 00:00:00

  • Inhibiting endoplasmic reticulum (ER)-associated degradation of misfolded Yor1p does not permit ER export despite the presence of a diacidic sorting signal.

    abstract::Capture of newly synthesized proteins into endoplasmic reticulum (ER)-derived coat protomer type II (COPII) vesicles represents a critical juncture in the quality control of protein biogenesis within the secretory pathway. The yeast ATP-binding cassette transporter Yor1p is a pleiotropic drug pump that shows homology ...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e07-01-0046

    authors: Pagant S,Kung L,Dorrington M,Lee MC,Miller EA

    更新日期:2007-09-01 00:00:00

  • The metalloprotease encoded by ATP23 has a dual function in processing and assembly of subunit 6 of mitochondrial ATPase.

    abstract::In the present study we have identified a new metalloprotease encoded by the nuclear ATP23 gene of Saccharomyces cerevisiae that is essential for expression of mitochondrial ATPase (F(1)-F(O) complex). Mutations in ATP23 cause the accumulation of the precursor form of subunit 6 and prevent assembly of F(O). Atp23p is ...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e06-09-0801

    authors: Zeng X,Neupert W,Tzagoloff A

    更新日期:2007-02-01 00:00:00

  • Methionine sulfoxide reduction in mammals: characterization of methionine-R-sulfoxide reductases.

    abstract::Methionine residues in proteins are susceptible to oxidation by reactive oxygen species, but can be repaired via reduction of the resulting methionine sulfoxides by methionine-S-sulfoxide reductase (MsrA) and methionine-R-sulfoxide reductase (MsrB). However, the identity of all methionine sulfoxide reductases involved...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e03-08-0629

    authors: Kim HY,Gladyshev VN

    更新日期:2004-03-01 00:00:00

  • Laminin 511 partners with laminin 332 to mediate directional migration of Madin-Darby canine kidney epithelial cells.

    abstract::Sustained directional migration of epithelial cells is essential for regeneration of injured epithelia. Front-rear polarity of migrating cells is determined by local activation of a signaling network involving Cdc42 and other factors in response to spatial cues from the environment, the nature of which are obscure. We...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E11-08-0718

    authors: Greciano PG,Moyano JV,Buschmann MM,Tang J,Lu Y,Rudnicki J,Manninen A,Matlin KS

    更新日期:2012-01-01 00:00:00

  • The eukaryotic two-component histidine kinase Sln1p regulates OCH1 via the transcription factor, Skn7p.

    abstract::The yeast "two-component" osmotic stress phosphorelay consists of the histidine kinase, Sln1p, the phosphorelay intermediate, Ypd1p and two response regulators, Ssk1p and Skn7p, whose activities are regulated by phosphorylation of a conserved aspartyl residue in the receiver domain. Dephospho-Ssk1p leads to activation...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.01-09-0434

    authors: Li S,Dean S,Li Z,Horecka J,Deschenes RJ,Fassler JS

    更新日期:2002-02-01 00:00:00

  • Assembly of the mitochondrial protein import channel: role of Tom5 in two-stage interaction of Tom40 with the SAM complex.

    abstract::The preprotein translocase of the outer mitochondrial membrane (TOM) consists of a central β-barrel channel, Tom40, and six proteins with α-helical transmembrane segments. The precursor of Tom40 is imported from the cytosol by a pre-existing TOM complex and inserted into the outer membrane by the sorting and assembly ...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E10-06-0518

    authors: Becker T,Guiard B,Thornton N,Zufall N,Stroud DA,Wiedemann N,Pfanner N

    更新日期:2010-09-15 00:00:00

  • Cingulin regulates claudin-2 expression and cell proliferation through the small GTPase RhoA.

    abstract::In mouse embryoid bodies, mutation of the tight junction protein cingulin results in changes in gene expression. Here, we studied the function of cingulin using a gene silencing approach in Madin-Darby canine kidney (MDCK) cells. Cingulin-depleted cells show higher protein and mRNA levels of claudin-2 and ZO-3, increa...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e06-02-0122

    authors: Guillemot L,Citi S

    更新日期:2006-08-01 00:00:00

  • Fab1 phosphatidylinositol 3-phosphate 5-kinase controls trafficking but not silencing of endocytosed receptors.

    abstract::The trafficking of endocytosed receptors through phosphatidylinositol 3-phosphate [PtdIns(3)P]-containing endosomes is thought to attenuate their signaling. Here, we show that the PtdIns(3)P 5-kinase Fab1/PIKfyve controls trafficking but not silencing of endocytosed receptors. Drosophila fab1 mutants contain undetecta...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e06-03-0239

    authors: Rusten TE,Rodahl LM,Pattni K,Englund C,Samakovlis C,Dove S,Brech A,Stenmark H

    更新日期:2006-09-01 00:00:00

  • Activation and functional analysis of Janus kinase 2 in BA/F3 cells using the coumermycin/gyrase B system.

    abstract::Janus kinase 2 (Jak2) protein tyrosine kinase plays an important role in interleukin-3- or granulocyte-macrophage colony-stimulating factor-mediated signal transduction pathways leading to cell proliferation, activation of early response genes, and inhibition of apoptosis. However, it is unclear whether Jak2 can activ...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.9.12.3299

    authors: Mohi MG,Arai Ki,Watanabe S

    更新日期:1998-12-01 00:00:00

  • Reorganization of budding yeast cytoplasm upon energy depletion.

    abstract::Yeast cells, when exposed to stress, can enter a protective state in which cell division, growth, and metabolism are down-regulated. They remain viable in this state until nutrients become available again. How cells enter this protective survival state and what happens at a cellular and subcellular level are largely u...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E20-02-0125

    authors: Marini G,Nüske E,Leng W,Alberti S,Pigino G

    更新日期:2020-06-01 00:00:00

  • Rescue of Munc18-1 and -2 double knockdown reveals the essential functions of interaction between Munc18 and closed syntaxin in PC12 cells.

    abstract::Munc18-1 binds to syntaxin-1A via two distinct sites referred to as the "closed" conformation and N terminus binding. The latter has been shown to stimulate soluble N-ethylmaleimide-sensitive factor attachment protein receptor-mediated exocytosis, whereas the former is believed to be inhibitory or dispensable. To prec...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e09-08-0712

    authors: Han L,Jiang T,Han GA,Malintan NT,Xie L,Wang L,Tse FW,Gaisano HY,Collins BM,Meunier FA,Sugita S

    更新日期:2009-12-01 00:00:00

  • Transcriptome analysis of tetraploid cells identifies cyclin D2 as a facilitator of adaptation to genome doubling in the presence of p53.

    abstract::Tetraploidization, or genome doubling, is a prominent event in tumorigenesis, primarily because cell division in polyploid cells is error-prone and produces aneuploid cells. This study investigates changes in gene expression evoked in acute and adapted tetraploid cells and their effect on cell-cycle progression. Acute...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E16-05-0268

    authors: Potapova TA,Seidel CW,Box AC,Rancati G,Li R

    更新日期:2016-10-15 00:00:00

  • Mechanism of a transcriptional cross talk between transforming growth factor-beta-regulated Smad3 and Smad4 proteins and orphan nuclear receptor hepatocyte nuclear factor-4.

    abstract::We have shown previously that the transforming growth factor-beta (TGFbeta)-regulated Sma-Mad (Smad) protein 3 and Smad4 proteins transactivate the apolipoprotein C-III promoter in hepatic cells via a hormone response element that binds the nuclear receptor hepatocyte nuclear factor 4 (HNF-4). In the present study, we...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e02-07-0375

    authors: Chou WC,Prokova V,Shiraishi K,Valcourt U,Moustakas A,Hadzopoulou-Cladaras M,Zannis VI,Kardassis D

    更新日期:2003-03-01 00:00:00

  • Early stages of the secretory pathway, but not endosomes, are required for Cvt vesicle and autophagosome assembly in Saccharomyces cerevisiae.

    abstract::The Cvt pathway is a biosynthetic transport route for a distinct subset of resident yeast vacuolar hydrolases, whereas macroautophagy is a nonspecific degradative mechanism that allows cell survival during starvation. Yet, these two vacuolar trafficking pathways share a number of identical molecular components and are...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e03-07-0479

    authors: Reggiori F,Wang CW,Nair U,Shintani T,Abeliovich H,Klionsky DJ

    更新日期:2004-05-01 00:00:00

  • Transition of responsive mechanosensitive elements from focal adhesions to adherens junctions on epithelial differentiation.

    abstract::The skin's epidermis is a multilayered epithelial tissue and the first line of defense against mechanical stress. Its barrier function depends on an integrated assembly and reorganization of cell-matrix and cell-cell junctions in the basal layer and on different intercellular junctions in suprabasal layers. However, h...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E17-06-0387

    authors: Noethel B,Ramms L,Dreissen G,Hoffmann M,Springer R,Rübsam M,Ziegler WH,Niessen CM,Merkel R,Hoffmann B

    更新日期:2018-09-15 00:00:00

  • Rab14 is involved in membrane trafficking between the Golgi complex and endosomes.

    abstract::Rab GTPases are localized to various intracellular compartments and are known to play important regulatory roles in membrane trafficking. Here, we report the subcellular distribution and function of Rab14. By immunofluorescence and immunoelectron microscopy, both endogenous as well as overexpressed Rab14 were localize...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e03-10-0777

    authors: Junutula JR,De Maziére AM,Peden AA,Ervin KE,Advani RJ,van Dijk SM,Klumperman J,Scheller RH

    更新日期:2004-05-01 00:00:00

  • Ectodomain shedding of TβRIII is required for TβRIII-mediated suppression of TGF-β signaling and breast cancer migration and invasion.

    abstract::The type III transforming growth factor β (TGF-β) receptor (TβRIII), also known as betaglycan, is the most abundantly expressed TGF-β receptor. TβRIII suppresses breast cancer progression by inhibiting migration, invasion, metastasis, and angiogenesis. TβRIII binds TGF-β ligands, with membrane-bound TβRIII presenting ...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E13-09-0524

    authors: Elderbroom JL,Huang JJ,Gatza CE,Chen J,How T,Starr M,Nixon AB,Blobe GC

    更新日期:2014-08-15 00:00:00

  • Importin alpha/beta and Ran-GTP regulate XCTK2 microtubule binding through a bipartite nuclear localization signal.

    abstract::The small GTPase Ran is essential for spindle assembly. Ran is proposed to act through its nuclear import receptors importin alpha and/or importin beta to control the sequestration of proteins necessary for spindle assembly. To date, the molecular mechanisms by which the Ran pathway functions remain unclear. Using pur...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e03-07-0454

    authors: Ems-McClung SC,Zheng Y,Walczak CE

    更新日期:2004-01-01 00:00:00

  • Synchronization of interphase events depends neither on mitosis nor on cdk1.

    abstract::Human HT2-19 cells with a conditional cdk1 mutation stop dividing upon cdk1 inactivation and undergo multiple rounds of endoreplication. We show herein that major cell cycle events remain synchronized in these endoreplicating cells. DNA replication alternates with gap phases and cell cycle-specific cyclin E expression...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e02-12-0850

    authors: Laronne A,Rotkopf S,Hellman A,Gruenbaum Y,Porter AC,Brandeis M

    更新日期:2003-09-01 00:00:00

  • An Lsm2-Lsm7 complex in Saccharomyces cerevisiae associates with the small nucleolar RNA snR5.

    abstract::Sm-like (Lsm) proteins function in a variety of RNA-processing events. In yeast, the Lsm2-Lsm8 complex binds and stabilizes the spliceosomal U6 snRNA, whereas the Lsm1-Lsm7 complex functions in mRNA decay. Here we report that a third Lsm complex, consisting of Lsm2-Lsm7 proteins, associates with snR5, a box H/ACA snoR...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e04-02-0116

    authors: Fernandez CF,Pannone BK,Chen X,Fuchs G,Wolin SL

    更新日期:2004-06-01 00:00:00

  • Single-filament kinetic studies provide novel insights into regulation of actin-based motility.

    abstract::Polarized assembly of actin filaments forms the basis of actin-based motility and is regulated both spatially and temporally. Cells use a variety of mechanisms by which intrinsically slower processes are accelerated, and faster ones decelerated, to match rates observed in vivo. Here we discuss how kinetic studies of i...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E15-06-0352

    authors: Shekhar S,Carlier MF

    更新日期:2016-01-01 00:00:00

  • A novel transcriptional enhancer is involved in the prolactin- and extracellular matrix-dependent regulation of beta-casein gene expression.

    abstract::Lactogenic hormones and extracellular matrix (ECM) act synergistically to regulate beta-casein expression in culture. We have developed a functional subpopulation of the mouse mammary epithelial cell strain COMMA-1D (designated CID 9), which expresses high level of beta-casein, forms alveolar-like structures when plat...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.3.6.699

    authors: Schmidhauser C,Casperson GF,Myers CA,Sanzo KT,Bolten S,Bissell MJ

    更新日期:1992-06-01 00:00:00

  • HSP70-binding protein HSPBP1 regulates chaperone expression at a posttranslational level and is essential for spermatogenesis.

    abstract::Molecular chaperones play key roles during growth, development, and stress survival. The ability to induce chaperone expression enables cells to cope with the accumulation of nonnative proteins under stress and complete developmental processes with an increased requirement for chaperone assistance. Here we generate an...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E14-02-0742

    authors: Rogon C,Ulbricht A,Hesse M,Alberti S,Vijayaraj P,Best D,Adams IR,Magin TM,Fleischmann BK,Höhfeld J

    更新日期:2014-08-01 00:00:00

  • Multivalent immune complexes divert FcRn to lysosomes by exclusion from recycling sorting tubules.

    abstract::The neonatal receptor for immunoglobulin G (IgG; FcRn) prevents IgG degradation by efficiently sorting IgG into recycling endosomes and away from lysosomes. When bound to IgG-opsonized antigen complexes, however, FcRn traffics cargo into lysosomes, where antigen processing can occur. Here we address the mechanism of s...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E13-04-0174

    authors: Weflen AW,Baier N,Tang QJ,Van den Hof M,Blumberg RS,Lencer WI,Massol RH

    更新日期:2013-08-01 00:00:00

  • Orientational order of the lamellipodial actin network as demonstrated in living motile cells.

    abstract::Lamellipodia of crawling cells represent both the motor for cell advance and the primary building site for the actin cytoskeleton. The organization of actin in the lamellipodium reflects actin dynamics and is of critical importance for the mechanism of cell motility. In previous structural studies, the lamellipodial a...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e02-10-0630

    authors: Verkhovsky AB,Chaga OY,Schaub S,Svitkina TM,Meister JJ,Borisy GG

    更新日期:2003-11-01 00:00:00

  • Nbl1p: a Borealin/Dasra/CSC-1-like protein essential for Aurora/Ipl1 complex function and integrity in Saccharomyces cerevisiae.

    abstract::The Aurora kinase complex, also called the chromosomal passenger complex (CPC), is essential for faithful chromosome segregation and completion of cell division. In Fungi and Animalia, this complex consists of the kinase Aurora B/AIR-2/Ipl1p, INCENP/ICP-1/Sli15p, and Survivin/BIR-1/Bir1p. A fourth subunit, Borealin/Da...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e08-10-1011

    authors: Nakajima Y,Tyers RG,Wong CC,Yates JR 3rd,Drubin DG,Barnes G

    更新日期:2009-03-01 00:00:00

  • Mammalian late vacuole protein sorting orthologues participate in early endosomal fusion and interact with the cytoskeleton.

    abstract::In Saccharomyces cerevisiae, the class C vacuole protein sorting (Vps) proteins, together with Vam2p/Vps41p and Vam6p/Vps39p, form a complex that interacts with soluble N-ethylmaleimide-sensitive factor attachment protein receptor and Rab proteins to "tether" vacuolar membranes before fusion. To determine a role for t...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e03-06-0358

    authors: Richardson SC,Winistorfer SC,Poupon V,Luzio JP,Piper RC

    更新日期:2004-03-01 00:00:00