Mutational effect of fission yeast polalpha on cell cycle events.

Abstract:

:Polalpha is the principal DNA polymerase for initiation of DNA replication and also functions in postinitiation DNA synthesis. In this study, we investigated the cell cycle responses induced by mutations in polalpha+. Germinating spores carrying either a deletion of polalpha+ (polalphaDelta) or a structurally intact but catalytically dead polalpha mutation proceed to inappropriate mitosis with no DNA synthesis. This suggests that the catalytic function, and not the physical presence of Polalpha, is required to generate the signal that prevents the cells from entering mitosis prematurely. Cells with a polalphats allele arrest the cell cycle near the hydroxyurea arrest point, but, surprisingly, polalphats in cdc20 (polepsilon mutant) background arrested with a cdc phenoytpe, not a polalphats-like phenotype. At 25 degrees C, replication perturbation caused by polalphats alleles induces Cds1 kinase activity and requires the checkpoint Rads, Cds1, and Rqh1, but not Chk1, to maintain cell viability. At 36 degrees C, replication disruption caused by polalphats alleles induces the phosphorylation of Chk1; however, mutant cells arrest with heterogeneous cell sizes with a population of the cells entering aberrant mitosis. Together, our results indicate that the initiation DNA structure synthesized by Polalpha is required to bring about the S phase to mitosis checkpoint, whereas replication defects of different severity caused by polalphats mutations induce differential downstream kinase responses.

journal_name

Mol Biol Cell

authors

Bhaumik D,Wang TS

doi

10.1091/mbc.9.8.2107

subject

Has Abstract

pub_date

1998-08-01 00:00:00

pages

2107-23

issue

8

eissn

1059-1524

issn

1939-4586

journal_volume

9

pub_type

杂志文章
  • Golgi-to-endoplasmic reticulum (ER) retrograde traffic in yeast requires Dsl1p, a component of the ER target site that interacts with a COPI coat subunit.

    abstract::DSL1 was identified through its genetic interaction with SLY1, which encodes a t-SNARE-interacting protein that functions in endoplasmic reticulum (ER)-to-Golgi traffic. Conditional dsl1 mutants exhibit a block in ER-to-Golgi traffic at the restrictive temperature. Here, we show that dsl1 mutants are defective for ret...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.12.12.3783

    authors: Reilly BA,Kraynack BA,VanRheenen SM,Waters MG

    更新日期:2001-12-01 00:00:00

  • Monoubiquitination of syntaxin 3 leads to retrieval from the basolateral plasma membrane and facilitates cargo recruitment to exosomes.

    abstract::Syntaxin 3 (Stx3), a SNARE protein located and functioning at the apical plasma membrane of epithelial cells, is required for epithelial polarity. A fraction of Stx3 is localized to late endosomes/lysosomes, although how it traffics there and its function in these organelles is unknown. Here we report that Stx3 underg...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E17-07-0461

    authors: Giovannone AJ,Reales E,Bhattaram P,Fraile-Ramos A,Weimbs T

    更新日期:2017-10-15 00:00:00

  • The link between autophagy and secretion: a story of multitasking proteins.

    abstract::The secretory and autophagy pathways can be thought of as the biosynthetic (i.e., anabolic) and degradative (i.e., catabolic) branches of the endomembrane system. In analogy to anabolic and catabolic pathways in metabolism, there is mounting evidence that the secretory and autophagy pathways are intimately linked and ...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章,评审

    doi:10.1091/mbc.E16-11-0762

    authors: Farhan H,Kundu M,Ferro-Novick S

    更新日期:2017-05-01 00:00:00

  • Myosin vb is associated with plasma membrane recycling systems.

    abstract::Myosin Va is associated with discrete vesicle populations in a number of cell types, but little is known of the function of myosin Vb. Yeast two-hybrid screening of a rabbit parietal cell cDNA library with dominant active Rab11a (Rab11aS20V) identified myosin Vb as an interacting protein for Rab11a, a marker for plasm...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.12.6.1843

    authors: Lapierre LA,Kumar R,Hales CM,Navarre J,Bhartur SG,Burnette JO,Provance DW Jr,Mercer JA,Bähler M,Goldenring JR

    更新日期:2001-06-01 00:00:00

  • Energy metabolism regulates clathrin adaptors at the trans-Golgi network and endosomes.

    abstract::Glucose is a master regulator of cell behavior in the yeast Saccharomyces cerevisiae. It acts as both a metabolic substrate and a potent regulator of intracellular signaling cascades. Glucose starvation induces the transient delocalization and then partial relocalization of clathrin adaptors at the trans-Golgi network...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E12-10-0750

    authors: Aoh QL,Hung CW,Duncan MC

    更新日期:2013-03-01 00:00:00

  • A novel selection regime for differentiation defects demonstrates an essential role for the stumpy form in the life cycle of the African trypanosome.

    abstract::A novel selection scheme has been developed to isolate bloodstream forms of Trypanosoma brucei, which are defective in their ability to differentiate to the procyclic stage. Detailed characterization of one selected cell line (defective in differentiation clone 1 [DiD-1]) has demonstrated that these cells are indistin...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.11.5.1905

    authors: Tasker M,Wilson J,Sarkar M,Hendriks E,Matthews K

    更新日期:2000-05-01 00:00:00

  • Kinetochore localization of spindle checkpoint proteins: who controls whom?

    abstract::The spindle checkpoint prevents anaphase onset until all the chromosomes have successfully attached to the spindle microtubules. The mechanisms by which unattached kinetochores trigger and transmit a primary signal are poorly understood, although it seems to be dependent at least in part, on the kinetochore localizati...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e04-01-0051

    authors: Vigneron S,Prieto S,Bernis C,Labbé JC,Castro A,Lorca T

    更新日期:2004-10-01 00:00:00

  • Revised subunit order of mammalian septin complexes explains their in vitro polymerization properties.

    abstract::Septins are conserved GTP-binding cytoskeletal proteins that polymerize into filaments by end-to-end joining of hetero-oligomeric complexes. In human cells, both hexamers and octamers exist, and crystallography studies predicted the order of the hexamers to be SEPT7-SEPT6-SEPT2-SEPT2-SEPT6-SEPT7, while octamers are th...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E20-06-0398

    authors: Soroor F,Kim MS,Palander O,Balachandran Y,Collins RF,Benlekbir S,Rubinstein JL,Trimble WS

    更新日期:2021-02-01 00:00:00

  • The role actin filaments play in providing the characteristic curved form of Drosophila bristles.

    abstract::Drosophila bristles display a precise orientation and curvature. An asymmetric extension of the socket cell overlies the newly emerging bristle rudiment to provide direction for bristle elongation, a process thought to be orchestrated by the nerve dendrite lying between these cells. Scanning electron microscopic analy...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e04-06-0472

    authors: Tilney LG,Connelly PS,Ruggiero L,Vranich KA,Guild GM,Derosier D

    更新日期:2004-12-01 00:00:00

  • 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 gene...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.3.8.927

    authors: Izumi T,Walker DH,Maller JL

    更新日期:1992-08-01 00:00:00

  • Identification of novel, evolutionarily conserved Cdc42p-interacting proteins and of redundant pathways linking Cdc24p and Cdc42p to actin polarization in yeast.

    abstract::In the yeast Saccharomyces cerevisiae, Cdc24p functions at least in part as a guanine-nucleotide-exchange factor for the Rho-family GTPase Cdc42p. A genetic screen designed to identify possible additional targets of Cdc24p instead identified two previously known genes, MSB1 and CLA4, and one novel gene, designated MSB...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.11.2.773

    authors: Bi E,Chiavetta JB,Chen H,Chen GC,Chan CS,Pringle JR

    更新日期:2000-02-01 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

  • Actin-binding protein-1 interacts with WASp-interacting protein to regulate growth factor-induced dorsal ruffle formation.

    abstract::Growth factor stimulation induces the formation of dynamic actin structures known as dorsal ruffles. Mammalian actin-binding protein-1 (mAbp1) is an actin-binding protein that has been implicated in regulating clathrin-mediated endocytosis; however, a role for mAbp1 in regulating the dynamics of growth factor-induced ...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e09-02-0106

    authors: Cortesio CL,Perrin BJ,Bennin DA,Huttenlocher A

    更新日期:2010-01-01 00:00:00

  • CARMIL2 is a novel molecular connection between vimentin and actin essential for cell migration and invadopodia formation.

    abstract::Cancer cell migration requires the regulation of actin networks at protrusions associated with invadopodia and other leading edges. Carcinomas become invasive after undergoing an epithelial-mesenchymal transition characterized by the appearance of vimentin filaments. While vimentin expression correlates with cell migr...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E15-08-0552

    authors: Lanier MH,Kim T,Cooper JA

    更新日期:2015-12-15 00:00:00

  • Connexin hemichannel composition determines the FGF-1-induced membrane permeability and free [Ca2+]i responses.

    abstract::Cell surface hemichannels (HCs) composed of different connexin (Cx) types are present in diverse cells and their possible role on FGF-1-induced cellular responses remains unknown. Here, we show that FGF-1 transiently (4-14 h, maximal at 7 h) increases the membrane permeability through HCs in HeLa cells expressing Cx43...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e07-12-1240

    authors: Schalper KA,Palacios-Prado N,Retamal MA,Shoji KF,Martínez AD,Sáez JC

    更新日期:2008-08-01 00:00:00

  • Divergent roles of c-Src in controlling platelet-derived growth factor-dependent signaling in fibroblasts.

    abstract::The vast complexity of platelet-derived growth factor (PDGF)-induced downstream signaling pathways is well known, but the precise roles of critical players still elude us due to our lack of specific and temporal control over their activities. Accordingly, although Src family members are some of the better characterize...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e05-03-0263

    authors: Shah K,Vincent F

    更新日期:2005-11-01 00:00:00

  • rsly1 binding to syntaxin 5 is required for endoplasmic reticulum-to-Golgi transport but does not promote SNARE motif accessibility.

    abstract::Although some of the principles of N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) function are well understood, remarkably little detail is known about sec1/munc18 (SM) protein function and its relationship to SNAREs. Popular models of SM protein function hold that these proteins promote or main...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e03-07-0535

    authors: Williams AL,Ehm S,Jacobson NC,Xu D,Hay JC

    更新日期:2004-01-01 00:00:00

  • Repositioning of muscle-specific genes relative to the periphery of SC-35 domains during skeletal myogenesis.

    abstract::Previous studies have shown that in a given cell type, certain active genes associate with SC-35 domains, nuclear regions rich in RNA metabolic factors and excluded from heterochromatin. This organization is not seen for all active genes; therefore, it is important to determine whether and when this locus-specific org...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e03-06-0388

    authors: Moen PT Jr,Johnson CV,Byron M,Shopland LS,de la Serna IL,Imbalzano AN,Lawrence JB

    更新日期:2004-01-01 00:00:00

  • Temperature-modulated alternative splicing and promoter use in the Circadian clock gene frequency.

    abstract::The expression of FREQUENCY, a central component of the circadian clock in Neurospora crassa, shows daily cycles that are exquisitely sensitive to the environment. Two forms of FRQ that differ in length by 99 amino acids, LFRQ and SFRQ, are synthesized from alternative initiation codons and the change in their ratio a...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e05-08-0756

    authors: Colot HV,Loros JJ,Dunlap JC

    更新日期:2005-12-01 00:00:00

  • Gemin3 is an essential gene required for larval motor function and pupation in Drosophila.

    abstract::The assembly of metazoan Sm-class small nuclear ribonucleoproteins (snRNPs) is an elaborate, step-wise process that takes place in multiple subcellular compartments. The initial steps, including formation of the core RNP, are mediated by the survival motor neuron (SMN) protein complex. Loss-of-function mutations in hu...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e08-01-0024

    authors: Shpargel KB,Praveen K,Rajendra TK,Matera AG

    更新日期:2009-01-01 00:00:00

  • Insulin stimulation of GLUT4 exocytosis, but not its inhibition of endocytosis, is dependent on RabGAP AS160.

    abstract::Insulin maintains whole body blood glucose homeostasis, in part, by regulating the amount of the GLUT4 glucose transporter on the cell surface of fat and muscle cells. Insulin induces the redistribution of GLUT4 from intracellular compartments to the plasma membrane, by stimulating a large increase in exocytosis and a...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e04-04-0333

    authors: Zeigerer A,McBrayer MK,McGraw TE

    更新日期:2004-10-01 00:00:00

  • Tension-dependent nucleosome remodeling at the pericentromere in yeast.

    abstract::Nucleosome positioning is important for the structural integrity of chromosomes. During metaphase the mitotic spindle exerts physical force on pericentromeric chromatin. The cell must adjust the pericentromeric chromatin to accommodate the changing tension resulting from microtubule dynamics to maintain a stable metap...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E11-07-0651

    authors: Verdaasdonk JS,Gardner R,Stephens AD,Yeh E,Bloom K

    更新日期:2012-07-01 00:00:00

  • Two functionally identical modular enhancers in Drosophila troponin T gene establish the correct protein levels in different muscle types.

    abstract::The control of muscle-specific expression is one of the principal mechanisms by which diversity is generated among muscle types. In an attempt to elucidate the regulatory mechanisms that control fiber diversity in any given muscle, we have focused our attention on the transcriptional regulation of the Drosophila Tropo...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e03-10-0729

    authors: Mas JA,García-Zaragoza E,Cervera M

    更新日期:2004-04-01 00:00:00

  • TRAF2 phosphorylation promotes NF-κB-dependent gene expression and inhibits oxidative stress-induced cell death.

    abstract::Tumor necrosis factor α (TNF-α) receptor-associated factor 2 (TRAF2) regulates activation of the c-Jun N-terminal kinase (JNK)/c-Jun and the inhibitor of κB kinase (IKK)/nuclear factor κB (NF-κB) signaling cascades in response to TNF-α stimulation. Gene knockout studies have revealed that TRAF2 inhibits TNF-α-induced ...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E10-06-0556

    authors: Zhang L,Blackwell K,Altaeva A,Shi Z,Habelhah H

    更新日期:2011-01-01 00:00:00

  • Alzheimer Abeta peptide induces chromosome mis-segregation and aneuploidy, including trisomy 21: requirement for tau and APP.

    abstract::Both sporadic and familial Alzheimer's disease (AD) patients exhibit increased chromosome aneuploidy, particularly trisomy 21, in neurons and other cells. Significantly, trisomy 21/Down syndrome patients develop early onset AD pathology. We investigated the mechanism underlying mosaic chromosome aneuploidy in AD and r...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e09-10-0850

    authors: Granic A,Padmanabhan J,Norden M,Potter H

    更新日期:2010-02-15 00:00:00

  • Mutants of the Paf1 complex alter phenotypic expression of the yeast prion [PSI+].

    abstract::The yeast [PSI+] prion is an epigenetic modifier of translation termination fidelity that causes nonsense suppression. The prion [PSI+] forms when the translation termination factor Sup35p adopts a self-propagating conformation. The presence of the [PSI+] prion modulates survivability in a variety of growth conditions...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e08-08-0813

    authors: Strawn LA,Lin CA,Tank EM,Osman MM,Simpson SA,True HL

    更新日期:2009-04-01 00:00:00

  • 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

  • Suspended animation extends survival limits of Caenorhabditis elegans and Saccharomyces cerevisiae at low temperature.

    abstract::The orderly progression through the cell division cycle is of paramount importance to all organisms, as improper progression through the cycle could result in defects with grave consequences. Previously, our lab has shown that model eukaryotes such as Saccharomyces cerevisiae, Caenorhabditis elegans, and Danio rerio a...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e09-07-0614

    authors: Chan K,Goldmark JP,Roth MB

    更新日期:2010-07-01 00:00:00

  • MTG1 codes for a conserved protein required for mitochondrial translation.

    abstract::The MTG1 gene of Saccharomyces cerevisiae, corresponding to ORF YMR097c on chromosome XIII, codes for a mitochondrial protein essential for respiratory competence. A human homologue of Mtg1p capable of partially rescuing the respiratory deficiency of a yeast mtg1 mutant has also been localized in mitochondria. Mtg1p i...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e02-10-0636

    authors: Barrientos A,Korr D,Barwell KJ,Sjulsen C,Gajewski CD,Manfredi G,Ackerman S,Tzagoloff A

    更新日期:2003-06-01 00:00:00

  • Developing a set of guidelines for your research field: a practical approach.

    abstract::Since 2008, the autophagy community has periodically published a set of guidelines, currently titled "Guidelines for the Use and Interpretation of Assays for Monitoring Autophagy." The newest version of the guidelines was published in 2016. There are many reasons for establishing a set of guidelines in a given researc...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E15-09-0618

    authors: Klionsky DJ

    更新日期:2016-03-01 00:00:00