The cytoplasmic tail of GM3 synthase defines its subcellular localization, stability, and in vivo activity.

Abstract:

:GM3 synthase (SAT-I) is the primary glycosyltransferase responsible for the biosynthesis of ganglio-series gangliosides. In this study, we identify three isoforms of mouse SAT-I proteins, named M1-SAT-I, M2-SAT-I, and M3-SAT-I, which possess distinct lengths in their NH(2)-terminal cytoplasmic tails. These isoforms are produced by leaky scanning from mRNA variants of mSAT-Ia and mSAT-Ib. M2-SAT-I and M3-SAT-I were found to be localized in the Golgi apparatus, as expected, whereas M1-SAT-I was exclusively found in the endoplasmic reticulum (ER). Specific multiple arginines (R) arranged in an R-based motif, RRXXXXR necessary for ER targeting, were found in the cytoplasmic tail of M1-SAT-I, and in vivo GM3 biosynthesis by M1-SAT-I was very low because of restricted transport to the Golgi apparatus. In addition, M1-SAT-I and M3-SAT-I had a long half-life relative to M2-SAT-I. This is the first report demonstrating the presence of an ER-targeting R-based motif in the cytoplasmic tail of a protein in the mammalian glycosyltransferase family of enzymes. The system, which produces SAT-I isoforms having distinct characteristics, is likely to be of critical importance for the regulation of GM3 biosynthesis under various pathological and physiological conditions.

journal_name

Mol Biol Cell

authors

Uemura S,Yoshida S,Shishido F,Inokuchi J

doi

10.1091/mbc.e08-12-1219

subject

Has Abstract

pub_date

2009-07-01 00:00:00

pages

3088-100

issue

13

eissn

1059-1524

issn

1939-4586

pii

E08-12-1219

journal_volume

20

pub_type

杂志文章
  • Segregation of heterotrimeric G proteins in cell surface microdomains. G(q) binds caveolin to concentrate in caveolae, whereas G(i) and G(s) target lipid rafts by default.

    abstract::Select lipid-anchored proteins such as glycosylphosphatidylinositol (GPI)-anchored proteins and nonreceptor tyrosine kinases may preferentially partition into sphingomyelin-rich and cholesterol-rich plasmalemmal microdomains, thereby acquiring resistance to detergent extraction. Two such domains, caveolae and lipid ra...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.12.3.685

    authors: Oh P,Schnitzer JE

    更新日期:2001-03-01 00:00:00

  • Single-cell phenomics in budding yeast.

    abstract::The demand for phenomics, a high-dimensional and high-throughput phenotyping method, has been increasing in many fields of biology. The budding yeast Saccharomyces cerevisiae, a unicellular model organism, provides an invaluable system for dissecting complex cellular processes using high-resolution phenotyping. Moreov...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章,评审

    doi:10.1091/mbc.E15-07-0466

    authors: Ohya Y,Kimori Y,Okada H,Ohnuki S

    更新日期:2015-11-05 00:00:00

  • O-glycosylation as a sorting determinant for cell surface delivery in yeast.

    abstract::Little is known about the mechanisms that determine localization of proteins to the plasma membrane in Saccharomyces cerevisiae. The length of the transmembrane domains and association of proteins with lipid rafts have been proposed to play a role in sorting to the cell surface. Here, we report that Fus1p, an O-glycos...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e03-07-0511

    authors: Proszynski TJ,Simons K,Bagnat M

    更新日期:2004-04-01 00:00:00

  • Caenorhabditis elegans prom-1 is required for meiotic prophase progression and homologous chromosome pairing.

    abstract::A novel gene, prom-1, was isolated in a screen for Caenorhabditis elegans mutants with increased apoptosis in the germline. prom-1 encodes an F-box protein with limited homology to the putative human tumor suppressor FBXO47. Mutations in the prom-1 locus cause a strong reduction in bivalent formation, which results in...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e07-03-0243

    authors: Jantsch V,Tang L,Pasierbek P,Penkner A,Nayak S,Baudrimont A,Schedl T,Gartner A,Loidl J

    更新日期:2007-12-01 00:00:00

  • A link between aurora kinase and Clp1/Cdc14 regulation uncovered by the identification of a fission yeast borealin-like protein.

    abstract::The chromosomal passenger complex (CPC) regulates various events in cell division. This complex is composed of a catalytic subunit, Aurora B kinase, and three nonenzymatic subunits, INCENP, Survivin, and Borealin. Together, these four subunits interdependently regulate CPC function, and they are highly conserved among...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e09-04-0289

    authors: Bohnert KA,Chen JS,Clifford DM,Vander Kooi CW,Gould KL

    更新日期:2009-08-01 00:00:00

  • PKC-mediated phosphorylation of nuclear lamins at a single serine residue regulates interphase nuclear size in Xenopus and mammalian cells.

    abstract::How nuclear size is regulated is a fundamental cell-biological question with relevance to cancers, which often exhibit enlarged nuclei. We previously reported that conventional protein kinase C (cPKC) contributes to nuclear size reductions that occur during early Xenopus development. Here we report that PKC-mediated p...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E16-11-0786

    authors: Edens LJ,Dilsaver MR,Levy DL

    更新日期:2017-05-15 00:00:00

  • Functional analysis and importance for host cell infection of the Ca2+-conducting subunits of the mitochondrial calcium uniporter of Trypanosoma cruzi.

    abstract::We report here that Trypanosoma cruzi, the etiologic agent of Chagas disease, possesses two unique paralogues of the mitochondrial calcium uniporter complex TcMCU subunit that we named TcMCUc and TcMCUd. The predicted structure of the proteins indicates that, as predicted for the TcMCU and TcMCUb paralogues, they are ...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E19-03-0152

    authors: Chiurillo MA,Lander N,Bertolini MS,Vercesi AE,Docampo R

    更新日期:2019-07-01 00:00:00

  • p120-catenin and β-catenin differentially regulate cadherin adhesive function.

    abstract::Vascular endothelial (VE)-cadherin, the major adherens junction adhesion molecule in endothelial cells, interacts with p120-catenin and β-catenin through its cytoplasmic tail. However, the specific functional contributions of the catenins to the establishment of strong adhesion are not fully understood. Here we use bi...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E12-06-0471

    authors: Oas RG,Nanes BA,Esimai CC,Vincent PA,García AJ,Kowalczyk AP

    更新日期:2013-03-01 00:00:00

  • Cross talk between tetanus neurotoxin-insensitive vesicle-associated membrane protein-mediated transport and L1-mediated adhesion.

    abstract::The membrane-trafficking pathway mediated by tetanus neurotoxin-insensitive vesicle-associated membrane protein (TI-VAMP) in neurons is still unknown. We show herein that TI-VAMP expression is necessary for neurite outgrowth in PC12 cells and hippocampal neurons in culture. TI-VAMP interacts with plasma membrane and e...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e03-03-0147

    authors: Alberts P,Rudge R,Hinners I,Muzerelle A,Martinez-Arca S,Irinopoulou T,Marthiens V,Tooze S,Rathjen F,Gaspar P,Galli T

    更新日期:2003-10-01 00:00:00

  • Of microtubules and memory: implications for microtubule dynamics in dendrites and spines.

    abstract::Microtubules (MTs) are cytoskeletal polymers composed of repeating subunits of tubulin that are ubiquitously expressed in eukaryotic cells. They undergo a stochastic process of polymerization and depolymerization from their plus ends termed dynamic instability. MT dynamics is an ongoing process in all cell types and h...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章,评审

    doi:10.1091/mbc.E15-11-0769

    authors: Dent EW

    更新日期:2017-01-01 00:00:00

  • Chromatin association of XRCC5/6 in the absence of DNA damage depends on the XPE gene product DDB2.

    abstract::Damaged DNA-binding protein 2 (DDB2), a nuclear protein, participates in both nucleotide excision repair and mRNA transcription. The transcriptional regulatory function of DDB2 is significant in colon cancer, as it regulates metastasis. To characterize the mechanism by which DDB2 participates in transcription, we inve...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E16-08-0573

    authors: Fantini D,Huang S,Asara JM,Bagchi S,Raychaudhuri P

    更新日期:2017-01-01 00:00:00

  • Nucleophosmin is a binding partner of nucleostemin in human osteosarcoma cells.

    abstract::Nucleostemin (NS) is expressed in the nucleoli of adult and embryonic stem cells and in many tumors and tumor-derived cell lines. In coimmunoprecipitation experiments, nucleostemin is recovered with the tumor suppressor p53, and more recently we have demonstrated that nucleostemin exerts its role in cell cycle progres...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e08-02-0128

    authors: Ma H,Pederson T

    更新日期:2008-07-01 00:00:00

  • Fidgetin regulates cultured astrocyte migration by severing tyrosinated microtubules at the leading edge.

    abstract::Microtubule (MT) organization is essential for many cellular events, including mitosis, migration, and cell polarity. Fidgetin (Fign), an ATP-dependent, MT-severing protein, contributes to the regulation of MT configuration by cutting and trimming MT polymers. Functions of Fign have been indicated in neurite outgrowth...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E16-09-0628

    authors: Hu Z,Feng J,Bo W,Wu R,Dong Z,Liu Y,Qiang L,Liu M

    更新日期:2017-02-15 00:00:00

  • Dynein light intermediate chain: an essential subunit that contributes to spindle checkpoint inactivation.

    abstract::The dynein light intermediate chain (LIC) is a subunit unique to the cytoplasmic form of dynein, but how it contributes to dynein function is not fully understood. Previous work has established that the LIC homodimer binds directly to the dynein heavy chain and may mediate the attachment of dynein to centrosomes and o...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e08-05-0483

    authors: Mische S,He Y,Ma L,Li M,Serr M,Hays TS

    更新日期:2008-11-01 00:00:00

  • Pho4 mediates phosphate acquisition in Candida albicans and is vital for stress resistance and metal homeostasis.

    abstract::During interactions with its mammalian host, the pathogenic yeast Candida albicans is exposed to a range of stresses such as superoxide radicals and cationic fluxes. Unexpectedly, a nonbiased screen of transcription factor deletion mutants revealed that the phosphate-responsive transcription factor Pho4 is vital for t...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E16-05-0266

    authors: Ikeh MA,Kastora SL,Day AM,Herrero-de-Dios CM,Tarrant E,Waldron KJ,Banks AP,Bain JM,Lydall D,Veal EA,MacCallum DM,Erwig LP,Brown AJ,Quinn J

    更新日期:2016-09-01 00:00:00

  • XB130/Tks5 scaffold protein interaction regulates Src-mediated cell proliferation and survival.

    abstract::The scaffold protein XB130 regulates cell growth, survival, and migration. Yeast two-hybrid screening suggests that XB130 interacts with another scaffold protein, Tks5. We hypothesized that XB130 and Tks5 form a macromolecular complex to mediate signal transduction cascades for the regulation of cell growth and surviv...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E15-07-0483

    authors: Moodley S,Hui Bai X,Kapus A,Yang B,Liu M

    更新日期:2015-12-01 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

  • GLUT4 retention in adipocytes requires two intracellular insulin-regulated transport steps.

    abstract::Insulin regulates glucose uptake into fat and muscle by modulating the distribution of the GLUT4 glucose transporter between the surface and interior of cells. The GLUT4 trafficking pathway overlaps with the general endocytic recycling pathway, but the degree and functional significance of the overlap are not known. I...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e02-02-0071

    authors: Zeigerer A,Lampson MA,Karylowski O,Sabatini DD,Adesnik M,Ren M,McGraw TE

    更新日期:2002-07-01 00:00:00

  • Cell fusion in yeast is negatively regulated by components of the cell wall integrity pathway.

    abstract::During mating, Saccharomyces cerevisiae cells must degrade the intervening cell wall to allow fusion of the partners. Because improper timing or location of cell wall degradation would cause lysis, the initiation of cell fusion must be highly regulated. Here, we find that yeast cell fusion is negatively regulated by c...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E18-04-0236

    authors: Hall AE,Rose MD

    更新日期:2019-02-15 00:00:00

  • JAMP optimizes ERAD to protect cells from unfolded proteins.

    abstract::Clearance of misfolded proteins from the ER is central for maintenance of cellular homeostasis. This process requires coordinated recognition, ER-cytosol translocation, and finally ubiquitination-dependent proteasomal degradation. Here, we identify an ER resident seven-transmembrane protein (JAMP) that links ER chaper...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e08-08-0839

    authors: Tcherpakov M,Broday L,Delaunay A,Kadoya T,Khurana A,Erdjument-Bromage H,Tempst P,Qiu XB,DeMartino GN,Ronai Z

    更新日期:2008-11-01 00:00:00

  • Chromatin and lamin A determine two different mechanical response regimes of the cell nucleus.

    abstract::The cell nucleus must continually resist and respond to intercellular and intracellular mechanical forces to transduce mechanical signals and maintain proper genome organization and expression. Altered nuclear mechanics is associated with many human diseases, including heart disease, progeria, and cancer. Chromatin an...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E16-09-0653

    authors: Stephens AD,Banigan EJ,Adam SA,Goldman RD,Marko JF

    更新日期:2017-07-07 00:00:00

  • Casein kinase II and calcineurin modulate TRPP function and ciliary localization.

    abstract::Cilia serve as sensory devices in a diversity of organisms and their defects contribute to many human diseases. In primary cilia of kidney cells, the transient receptor potential polycystin (TRPP) channels polycystin-1 (PC-1) and polycystin-2 (PC-2) act as a mechanosensitive channel, with defects resulting in autosoma...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e05-10-0935

    authors: Hu J,Bae YK,Knobel KM,Barr MM

    更新日期:2006-05-01 00:00:00

  • RNA polymerase III in Cajal bodies and lampbrush chromosomes of the Xenopus oocyte nucleus.

    abstract::We used immunofluorescence to study the distribution and targeting of RNA polymerase (pol) III subunits and pol III transcription factors in the Xenopus laevis oocyte nucleus. Antibodies against several of these proteins stained Cajal bodies and approximately 90 specific sites on the lampbrush chromosomes. Some of the...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e02-05-0281

    authors: Murphy C,Wang Z,Roeder RG,Gall JG

    更新日期:2002-10-01 00:00:00

  • Two genes in Saccharomyces cerevisiae encode a membrane-bound form of casein kinase-1.

    abstract::Two cDNAs encoding casein kinase-1 have been isolated from a yeast cDNA library and termed CKI1 and CKI2. Each clone encodes a protein of approximately 62,000 Da containing a highly conserved protein kinase domain surrounded by variable amino- and carboxy-terminal domains. The proteins also contain two conserved carbo...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.3.3.275

    authors: Wang PC,Vancura A,Mitcheson TG,Kuret J

    更新日期:1992-03-01 00:00:00

  • Phosphatidylinositol 4,5-bisphosphate mediates the targeting of the exocyst to the plasma membrane for exocytosis in mammalian cells.

    abstract::The exocyst is an evolutionarily conserved octameric protein complex that tethers post-Golgi secretory vesicles at the plasma membrane for exocytosis. To elucidate the mechanism of vesicle tethering, it is important to understand how the exocyst physically associates with the plasma membrane (PM). In this study, we re...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e07-05-0461

    authors: Liu J,Zuo X,Yue P,Guo W

    更新日期:2007-11-01 00:00:00

  • Secretion and assembly of zona pellucida glycoproteins by growing mouse oocytes microinjected with epitope-tagged cDNAs for mZP2 and mZP3.

    abstract::The zona pellucida (ZP) is a highly organized extracellular coat that surrounds all mammalian eggs. The mouse egg ZP is composed of three glycoproteins, called mZP1-3, that are synthesized, secreted, and assembled into a ZP exclusively by growing oocytes. Here, we microinjected epitope-tagged (Myc and Flag) cDNAs for ...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.01-09-0440

    authors: Qi H,Williams Z,Wassarman PM

    更新日期:2002-02-01 00:00:00

  • Identification of a novel ADAMTS9/GON-1 function for protein transport from the ER to the Golgi.

    abstract::A disintegrin-like and metalloprotease with thrombospondin type I motif (ADAMTS9) is a member of the secreted metalloprotease family that is believed to digest extracellular matrix (ECM) proteins outside of cells. Its Caenorhabditis elegans orthologue, GON-1, is involved in ECM degradation and is required for gonad mo...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.E11-10-0857

    authors: Yoshina S,Sakaki K,Yonezumi-Hayashi A,Gengyo-Ando K,Inoue H,Iino Y,Mitani S

    更新日期:2012-05-01 00:00:00

  • Maloriented bivalents have metaphase positions at the spindle equator with more kinetochore microtubules to one pole than to the other.

    abstract::To test the "traction fiber" model for metaphase positioning of bivalents during meiosis, kinetochore fibers of maloriented bivalents, induced during recovery from cold arrest, were analyzed with a liquid crystal polarizing microscope. The measured birefringence retardation of kinetochore fibers is proportional to the...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e04-06-0524

    authors: LaFountain JR Jr,Oldenbourg R

    更新日期:2004-12-01 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

  • Cisternal organization of the endoplasmic reticulum during mitosis.

    abstract::The endoplasmic reticulum (ER) of animal cells is a single, dynamic, and continuous membrane network of interconnected cisternae and tubules spread out throughout the cytosol in direct contact with the nuclear envelope. During mitosis, the nuclear envelope undergoes a major rearrangement, as it rapidly partitions its ...

    journal_title:Molecular biology of the cell

    pub_type: 杂志文章

    doi:10.1091/mbc.e09-04-0327

    authors: Lu L,Ladinsky MS,Kirchhausen T

    更新日期:2009-08-01 00:00:00