abstract：:An in vitro transport assay, established with a modified Shiga toxin B subunit (STxB) as a marker, has proved to be useful for the study of transport from the early/recycling endosome (EE/RE) to the trans-Golgi network (TGN). Here, we modified this assay to test antibodies to all known soluble N-ethylmaleimide-sensiti...

journal_title：Molecular biology of the cell

authors： Tai G,Lu L,Wang TL,Tang BL,Goud B,Johannes L,Hong W

更新日期：2004-09-01 00:00:00

abstract：:In cycling between the mammalian host and the tsetse fly vector, trypanosomes undergo major changes in energy metabolism and surface coat composition. Early procyclic (insect) forms in the tsetse fly midgut are coated by glycoproteins known as EP and GPEET procyclins. EP expression continues in late procyclic forms, w...

journal_title：Molecular biology of the cell

authors： Vassella E,Probst M,Schneider A,Studer E,Renggli CK,Roditi I

更新日期：2004-09-01 00:00:00

abstract：:We studied the physiological response to limitation by diverse nutrients in batch and steady-state (chemostat) cultures of S. cerevisiae. We found that the global pattern of transcription in steady-state cultures in limiting phosphate or sulfate is essentially identical to that of batch cultures growing in the same me...

journal_title：Molecular biology of the cell

authors： Saldanha AJ,Brauer MJ,Botstein D

更新日期：2004-09-01 00:00:00

abstract：:We conducted a genetic screen for mutations in myospheroid, the gene encoding the Drosophila betaPS integrin subunit, and identified point mutants in all of the structural domains of the protein. Surprisingly, we find that mutations in very strongly conserved residues will often allow sufficient integrin function to s...

journal_title：Molecular biology of the cell

authors： Jannuzi AL,Bunch TA,West RF,Brower DL

更新日期：2004-08-01 00:00:00

abstract：:Rab 11 GTPase is an important regulator of endocytic membrane traffic. Recently, we and others have identified a novel family of Rab11 binding proteins, known as Rab11-family interacting proteins (FIPs). One of the family members, Rab coupling protein (RCP), was identified as a protein binding to both Rab4 and Rab11 G...

journal_title：Molecular biology of the cell

authors： Peden AA,Schonteich E,Chun J,Junutula JR,Scheller RH,Prekeris R

更新日期：2004-08-01 00:00:00

abstract：:The small G proteins Cdc42, Rac1, and Rac2 regulate the rearrangements of actin and membrane necessary for Fcgamma receptor-mediated phagocytosis by macrophages. Activated, GTP-bound Cdc42, Rac1, and Rac2 bind to the p21-binding domain (PBD) of PAK1, and this interaction provided a basis for microscopic methods to loc...

journal_title：Molecular biology of the cell

authors： Hoppe AD,Swanson JA

更新日期：2004-08-01 00:00:00

abstract：:UNC-104 (KIF1A) is a kinesin motor that transports synaptic vesicles from the neuronal cell body to the terminal. Previous in vitro studies have shown that a Dictyostelium relative of UNC-104 transports liposomes containing acidic phospholipids, but whether this interaction is needed for the recognition and transport ...

journal_title：Molecular biology of the cell

authors： Klopfenstein DR,Vale RD

更新日期：2004-08-01 00:00:00

abstract：:In this study, we examined the subcellular distribution and functions of LIMK1 in developing neurons. Confocal microscopy, subcellular fractionation, and expression of several epitope-tagged LIMK1 constructs revealed that LIMK1 is enriched in the Golgi apparatus and growth cones, with the LIM domain required for Golgi...

journal_title：Molecular biology of the cell

authors： Rosso S,Bollati F,Bisbal M,Peretti D,Sumi T,Nakamura T,Quiroga S,Ferreira A,Cáceres A

更新日期：2004-07-01 00:00:00

abstract：:The eukaryotic flagellum is a large structure into which specific constituent proteins must be targeted, transported and assembled after their synthesis in the cytoplasm. Using Trypanosoma brucei and a proteomic approach, we have identified and characterized a novel set of adenylate kinase proteins that are localized ...

journal_title：Molecular biology of the cell

authors： Pullen TJ,Ginger ML,Gaskell SJ,Gull K

更新日期：2004-07-01 00:00:00

abstract：:Targeting of peroxisomal membrane proteins (PMPs) is a multistep process that requires not only recognition of PMPs in the cytosol but also their insertion into the peroxisomal membrane. As a consequence, targeting signals of PMPs (mPTS) are rather complex. A candidate protein for the PMP recognition event is Pex19p, ...

journal_title：Molecular biology of the cell

authors： Rottensteiner H,Kramer A,Lorenzen S,Stein K,Landgraf C,Volkmer-Engert R,Erdmann R

更新日期：2004-07-01 00:00:00

abstract：:After invasion of epithelial cells, Salmonella enterica Typhimurium resides within membrane-bound vacuoles where it survives and replicates. Like endocytic vesicles, the Salmonella-containing vacuoles (SCVs) undergo a maturation process that involves sequential acquisition of Rab5 and Rab7 and displacement toward the ...

journal_title：Molecular biology of the cell

authors： Harrison RE,Brumell JH,Khandani A,Bucci C,Scott CC,Jiang X,Finlay BB,Grinstein S

更新日期：2004-07-01 00:00:00

abstract：:The cation-dependent mannose 6-phosphate receptor (CD-MPR) mediates the transport of lysosomal enzymes from the trans-Golgi network to endosomes. Evasion of lysosomal degradation of the CD-MPR requires reversible palmitoylation of a cysteine residue in its cytoplasmic tail. Because palmitoylation is reversible and ess...

journal_title：Molecular biology of the cell

authors： Stöckli J,Rohrer J

更新日期：2004-06-01 00:00:00

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

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

更新日期：2004-06-01 00:00:00

abstract：:Disassembly of the epithelial apical junctional complex (AJC), composed of the tight junction (TJ) and adherens junction (AJ), is important for normal tissue remodeling and pathogen-induced disruption of epithelial barriers. Using a calcium depletion model in T84 epithelial cells, we previously found that disassembly ...

journal_title：Molecular biology of the cell

authors： Ivanov AI,McCall IC,Parkos CA,Nusrat A

更新日期：2004-06-01 00:00:00

abstract：:Of the uncloned ODA genes required for outer dynein arm assembly in Chlamydomonas, ODA5 and ODA10 are of particular interest because they do not encode known subunits of the outer arm or the outer dynein arm-docking complex (ODA-DC), and because genetic studies suggest their products interact. Beginning with a tagged ...

journal_title：Molecular biology of the cell

authors： Wirschell M,Pazour G,Yoda A,Hirono M,Kamiya R,Witman GB

更新日期：2004-06-01 00:00:00

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

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

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

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

更新日期：2004-05-01 00:00:00

abstract：:Cortical granules are specialized organelles whose contents interact with the extracellular matrix of the fertilized egg to form the block to polyspermy. In sea urchins, the granule contents form a fertilization envelope (FE), and this construction is critically dependent upon protease activity. An autocatalytic serin...

journal_title：Molecular biology of the cell

authors： Haley SA,Wessel GM

更新日期：2004-05-01 00:00:00

abstract：:Sorting nexin 1 (SNX1) and SNX2, homologues of the yeast vacuolar protein-sorting (Vps)5p, contain a phospholipid-binding motif termed the phox homology (PX) domain and a carboxyl terminal coiled-coil region. A role for SNX1 in trafficking of cell surface receptors from endosomes to lysosomes has been proposed; howeve...

journal_title：Molecular biology of the cell

authors： Gullapalli A,Garrett TA,Paing MM,Griffin CT,Yang Y,Trejo J

更新日期：2004-05-01 00:00:00

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

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

更新日期：2004-04-01 00:00:00

abstract：:Neural cell adhesion molecules (CAMs) are important players during neurogenesis and neurite outgrowth as well as axonal fasciculation and pathfinding. Some of these developmental processes entail the activation of cellular signaling cascades. Pharmacological and genetic evidence indicates that the neurite outgrowth-pr...

journal_title：Molecular biology of the cell

authors： Islam R,Kristiansen LV,Romani S,Garcia-Alonso L,Hortsch M

更新日期：2004-04-01 00:00:00

abstract：:Cohesion establishment and maintenance are carried out by proteins that modify the activity of Cohesin, an essential complex that holds sister chromatids together. Constituents of the replication fork, such as the DNA polymerase alpha-binding protein Ctf4, contribute to cohesion in ways that are poorly understood. To ...

journal_title：Molecular biology of the cell

authors： Warren CD,Eckley DM,Lee MS,Hanna JS,Hughes A,Peyser B,Jie C,Irizarry R,Spencer FA

更新日期：2004-04-01 00:00:00

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

authors： Proszynski TJ,Simons K,Bagnat M

更新日期：2004-04-01 00:00:00

abstract：:Calcium (Ca(2+)) and calmodulin (CaM) are required for progression of mammalian cells from quiescence into S phase. In multiple cell types, cyclosporin A causes a G(1) cell cycle arrest, implicating the serine/threonine phosphatase calcineurin as one Ca(2+)/CaM-dependent enzyme required for G(1) transit. Here, we show...

journal_title：Molecular biology of the cell

authors： Kahl CR,Means AR

更新日期：2004-04-01 00:00:00

abstract：:The mmd1 mutation causes temperature-sensitive growth and defects in mitochondrial morphology and distribution in the fission yeast Schizosaccharomyces pombe. In mutant cells, mitochondria aggregate at the two cell ends, with increased aggregation at elevated temperatures. Microtubules, which mediate mitochondrial pos...

journal_title：Molecular biology of the cell

authors： Weir BA,Yaffe MP

更新日期：2004-04-01 00:00:00

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

authors： Kim HY,Gladyshev VN

更新日期：2004-03-01 00:00:00

abstract：:In the fission yeast Schizosaccharomyces pombe, three genes that function in the RNA interference (RNAi) pathway, ago1+, dcr1+, and rdp1+, have recently been shown to be important for timely formation of heterochromatin and accurate chromosome segregation. In the present study, we present evidence that null mutants fo...

journal_title：Molecular biology of the cell

authors： Carmichael JB,Provost P,Ekwall K,Hobman TC

更新日期：2004-03-01 00:00:00

abstract：:Apoptotic cells are cleared by phagocytosis during development, homeostasis, and pathology. However, it is still unclear how necrotic cells are removed. We compared the phagocytic uptake by macrophages of variants of L929sA murine fibrosarcoma cells induced to die by tumor necrosis factor-induced necrosis or by Fas-me...

journal_title：Molecular biology of the cell

authors： Brouckaert G,Kalai M,Krysko DV,Saelens X,Vercammen D,Ndlovu MN,Haegeman G,D'Herde K,Vandenabeele P

更新日期：2004-03-01 00:00:00

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

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

更新日期：2004-03-01 00:00:00

abstract：:Formins have conserved roles in cell polarity and cytokinesis and directly nucleate actin filament assembly through their FH2 domain. Here, we define the active region of the yeast formin Bni1 FH2 domain and show that it dimerizes. Mutations that disrupt dimerization abolish actin assembly activity, suggesting that di...

journal_title：Molecular biology of the cell

authors： Moseley JB,Sagot I,Manning AL,Xu Y,Eck MJ,Pellman D,Goode BL

更新日期：2004-02-01 00:00:00

abstract：:Synaptic vesicles (SV) are generated by two different mechanisms, one AP-2 dependent and one AP-3 dependent. It has been uncertain, however, whether these mechanisms generate SV that differ in molecular composition. We explored this hypothesis by analyzing the targeting of ZnT3 and synaptophysin both to PC12 synaptic-...

journal_title：Molecular biology of the cell

authors： Salazar G,Love R,Werner E,Doucette MM,Cheng S,Levey A,Faundez V

更新日期：2004-02-01 00:00:00

abstract：:Although the distribution of the cation-independent mannose 6-phosphate receptor (CI-MPR) has been well studied, its intracellular itinerary and trafficking kinetics remain uncertain. In this report, we describe the endocytic trafficking and steady-state localization of a chimeric form of the CI-MPR containing the ect...

journal_title：Molecular biology of the cell

authors： Lin SX,Mallet WG,Huang AY,Maxfield FR

更新日期：2004-02-01 00:00:00

abstract：:To date, two major apoptotic pathways, the death receptor and the mitochondrial pathway, have been well documented in mammalian cells. However, the involvement of these two apoptotic pathways, particularly the death receptor pathway, in transforming growth factor-beta 1 (TGF-beta 1)-induced apoptosis is not well under...

journal_title：Molecular biology of the cell

authors： Kim SG,Jong HS,Kim TY,Lee JW,Kim NK,Hong SH,Bang YJ

更新日期：2004-02-01 00:00:00

abstract：:p38 alpha mitogen-activated protein (MAP) kinase is a broadly expressed signaling molecule that participates in the regulation of cellular responses to stress as well as in the control of proliferation and survival of many cell types. We have used cell lines derived from p38 alpha knockout mice to study the role of th...

journal_title：Molecular biology of the cell

authors： Porras A,Zuluaga S,Black E,Valladares A,Alvarez AM,Ambrosino C,Benito M,Nebreda AR

更新日期：2004-02-01 00:00:00

abstract：:NSF and p97 are related AAA proteins implicated in membrane trafficking and organelle biogenesis. p97 is also involved in pathways that lead to ubiquitin-dependent proteolysis, including ER-associated degradation (ERAD). In this study, we have used dominant interfering ATP-hydrolysis deficient mutants (NSF(E329Q) and ...

journal_title：Molecular biology of the cell

authors： Dalal S,Rosser MF,Cyr DM,Hanson PI

更新日期：2004-02-01 00:00:00

abstract：:In most eukaryotes, genes encoding ribosomal RNAs (rDNA) are clustered in long tandem head-to-tail repeats. Studies of Saccharomyces cerevisiae have indicated that rDNA copy number is maintained through recombination events associated with site-specific blockage of replication forks (RFs). Here, we describe two Schizo...

journal_title：Molecular biology of the cell

authors： Coulon S,Gaillard PHL,Chahwan C,McDonald WH,Yates JR 3rd,Russell P

更新日期：2004-01-01 00:00:00

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

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

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

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

更新日期：2004-01-01 00:00:00

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

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

更新日期：2004-01-01 00:00:00

abstract：:A key question in eukaryotic differentiation is whether there are common regulators or biochemical events that are required for diverse types of differentiation or whether there is a core mechanism for differentiation. The unicellular model organism Saccharomyces cerevisiae undergoes filamentous differentiation in res...

journal_title：Molecular biology of the cell

authors： Jiang YW,Kang CM

更新日期：2003-12-01 00:00:00