Abstract：
:Microtubule-associated protein 2 (MAP2) is an abundant neuron-specific protein that binds to microtubules through a domain near its carboxyl terminus that contains either three or four similar repeats of a 31 amino acid motif. When expressed in non-neuronal cells by transfection MAP2 stabilises microtubules and induces their rearrangement into long bundles that are capable of supporting process outgrowth. To investigate which elements in the MAP2 sequence are involved in these functions we have constructed a series of deletion mutants of the short embryonic form of MAP2, MAP2c, and transfected them into non-neuronal cells. This showed that the strength of binding to microtubules increased with the number of repeats present in the construct. However, the repeat domain itself was insufficient for microtubule binding, which required in addition contiguous sequences either amino-terminal or carboxyl-terminal to the repeats themselves. Particularly on the amino-terminal side of the repeats, where there is a proline-rich domain, step-wise increases in the length of neighbouring sequence produced a gradual increase in microtubule binding. The apparent strength of binding to microtubules produced by mutant MAP2 forms was further correlated with the degree of bundling they induced as well as with the ability of the resulting microtubules to support process outgrowth. These results indicate that the interaction of MAP2 with microtubules is mediated by the combined action of several weak binding sites, including each of the repeat motifs and elements in the sequences on either side of them, whose additive effect produces the strong binding of the native MAP2 molecule. The results further indicate that both the bundling and stiffening of microtubules by MAP2 are correlated with the strength of its binding to them and suggest that these properties are a direct result of microtubule stabilisation.
journal_name
J Cell Scijournal_title
Journal of cell scienceauthors
Ferralli J,Doll T,Matus Asubject
Has Abstractpub_date
1994-11-01 00:00:00pages
3115-25eissn
0021-9533issn
1477-9137journal_volume
107 ( Pt 11)pub_type
杂志文章abstract：:Mutations in inositol polyphosphate 5-phosphatase E (INPP5E) cause the ciliopathies known as Joubert and MORM syndromes; however, the role of INPP5E in ciliary biology is not well understood. Here, we describe an interaction between INPP5E and AURKA, a centrosomal kinase that regulates mitosis and ciliary disassembly,...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.161323
更新日期：2015-01-15 00:00:00
abstract：:Extracellular matrix receptors of the integrin family have a dual role in the epidermis, regulating both adhesion and differentiation. Loss of contact with the extracellular matrix causes keratinocytes to become committed to terminal differentiation, and results in a decrease in the ability of the alpha 5 beta 1 integ...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1993-12-01 00:00:00
abstract：:Nodal signaling induces the formation of the endoderm and mesoderm during gastrulation. Nodal expression persists until the definitive endoderm progenitor has completely formed, and disappears thereafter. A tightly regulated Nodal expression system is essential for the differentiation of embryonic stem (ES) cells into...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.004127
更新日期：2007-06-15 00:00:00
abstract：:Poly(ADP-ribosyl)ation is a post-translational modification of proteins involved in the regulation of chromatin structure, DNA metabolism, cell division and cell death. Through the hydrolysis of poly(ADP-ribose) (PAR), Poly(ADP-ribose) glycohydrolase (PARG) has a crucial role in the control of life-and-death balance f...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.039115
更新日期：2009-06-15 00:00:00
abstract：:Assembly of contractile apparatuses in striated muscle requires precisely regulated reorganization of the actin cytoskeletal proteins into sarcomeric organization. Regulation of actin filament dynamics is one of the essential processes of myofibril assembly, but the mechanism of actin regulation in striated muscle is ...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.104950
更新日期：2012-09-01 00:00:00
abstract：:We previously showed that the cell-cell junction protein plakoglobin (PG) not only suppresses motility of keratinocytes in contact with each other, but also, unexpectedly, of single cells. Here we show that PG deficiency results in extracellular matrix (ECM)-dependent disruption of mature focal adhesions and cortical ...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.070391
更新日期：2010-10-15 00:00:00
abstract：:Activation and invasion of the vascular endothelium by Staphylococcus aureus is a major cause of sepsis and endocarditis. For endothelial cell invasion, S. aureus triggers actin polymerization through Cdc42, N-WASp (also known as WASL) and the Arp2/3 complex to assemble a phagocytic cup-like structure. Here, we show t...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.186213
更新日期：2016-08-01 00:00:00
abstract：:Polarization of the motile cell is associated with the formation of a distinct plasma membrane domain, the pseudopod, whose stabilization determines the directionality of cell movement. The rapid movement of cells over a substrate requires that an essential aspect of cell motility must be the supply of the necessary m...
journal_title：Journal of cell science
pub_type： 杂志文章,评审
doi：
更新日期：1999-06-01 00:00:00
abstract：:If mitotic-arrested, cold-stored HeLa cells are incubated at 37 degrees C a proportion of the population divides by an aberrant process which we have called subdivision by extrusion. This process has been studied by time-lapse photography and shown to differ from normal cleavage in several respects. The cell surface b...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1976-11-01 00:00:00
abstract：:Oncogenic forms of the non-receptor tyrosine kinase Src alter cell structure, in particular the actin cytoskeleton and the adhesion networks that control cell migration, and also transmit signals that regulate proliferation and cell survival. Recent work indicates that they do so by influencing the RhoA-ROCK pathway t...
journal_title：Journal of cell science
pub_type： 杂志文章,评审
doi：10.1242/jcs.01111
更新日期：2004-03-01 00:00:00
abstract：:The lymphatic endothelial cell (LEC) fate decision program during development has been described. However, the mechanism underlying the maintenance of differentiated LEC identity remains largely unknown. Here, we show that fibroblast growth factor 2 (FGF2) plays a fundamental role in maintaining a differentiated LEC t...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.137836
更新日期：2014-02-15 00:00:00
abstract：:Homophilic binding of E-cadherins through their ectodomains is fundamental to epithelial cell-cell adhesion. Despite this, E-cadherin ectodomains have evolved differently in the vertebrate and insect lineages. Of the five rod-like, tandemly aligned extracellular cadherin domains of vertebrate E-cadherin, the tip extra...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.189258
更新日期：2016-09-01 00:00:00
abstract：:The extracellular environment and tissue architecture contribute to proper cell function and growth control. Cells growing in monolayers on standard polystyrene tissue culture plates differ in their shape, growth rate and response to external stimuli, compared with cells growing in vivo. Here, we showed that the EGFR ...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.054551
更新日期：2009-12-01 00:00:00
abstract：:The cell types responsible for osteolysis associated with skeletal metastasis of solid malignancies are unclear. Tumour infiltrating macrophages (TIMs) isolated from primary mammary carcinomas of C3H/Avy mice were cultured on bone slices to assess their ability to resorb bone. After 14 days in co-culture with murine m...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1992-03-01 00:00:00
abstract：:The bimE (blocked-in-mitosis) gene appears to function as a negative mitotic regulator because the recessive bimE7 mutation can override certain interphase-arresting treatments and mutations, causing abnormal induction of mitosis. We have further investigated the role of bimE in cell cycle checkpoint control by: (1) c...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1995-11-01 00:00:00
abstract：:Using a genome-wide technical knockout, we isolated a newly identified set of GRIM (genes associated with retinoid-interferon-induced mortality) genes; GRIM genes mediate IFN- and retinoic-acid (RA)-induced cell death. Here, we describe the isolation and characterization of one such gene, GRIM-1. Three proteins, with ...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.070250
更新日期：2010-08-15 00:00:00
abstract：:Annexins are cytosolic phospholipid-binding proteins that can be found on the outer leaflet of the plasma membrane. The extracellular functions of annexin include modulating fibrinolysis activity and cell migration. Despite having well-described extracellular functions, the mechanism of annexin transport from the cyto...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.217034
更新日期：2018-07-19 00:00:00
abstract：:Changes in cellular behavior that cause epithelial cells to lose adhesiveness, acquire a motile invasive phenotype and metastasize to secondary sites are complex and poorly understood. Molecules that normally function to integrate adhesive spatial information with cytoskeleton dynamics and membrane trafficking probabl...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.031641
更新日期：2008-09-01 00:00:00
abstract：:We have studied caveolin-1 expression and the frequency and distribution of typical invaginated caveolae as they are identified by electron microscopy in the polarized epithelial cell lines MDCK II and Caco-2. In wild-type MDCK II cells caveolin expression is high and more than 400 caveolae/mm filter were observed at ...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1998-03-01 00:00:00
abstract：:Cardiac fibrosis is linked to fibroblast-to-myofibroblast phenoconversion and proliferation but the mechanisms underlying this are poorly understood. Ski is a negative regulator of TGF-β-Smad signaling in myofibroblasts, and might redirect the myofibroblast phenotype back to fibroblasts. Meox2 could alter TGF-β-mediat...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.126722
更新日期：2014-01-01 00:00:00
abstract：:Mutation of the LMNA gene, encoding nuclear lamin A and lamin C (hereafter lamin A/C), is a common cause of familial dilated cardiomyopathy (DCM). Among Finnish DCM patients, the founder mutation c.427T>C (p.S143P) is the most frequently reported genetic variant. Here, we show that p.S143P lamin A/C is more nucleoplas...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.184150
更新日期：2016-07-15 00:00:00
abstract：:Cytostellin, a approximately 240 kDa phosphoprotein found in all cells examined from human to yeast, is predominantly intranuclear in interphase mammalian cells and undergoes continuous redistribution during the cell cycle. Here, mammalian cytostellin is shown to localize to intranuclear regions enriched with multiple...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1994-03-01 00:00:00
abstract：:A major challenge in biology is to understand how genetic information is interpreted to direct the formation of specialized tissues within a multicellular organism. During differentiation, changes in chromatin structure and nuclear organization establish heritable patterns of gene expression in response to signals. Ep...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.01390
更新日期：2004-09-01 00:00:00
abstract：:Drosophila neural stem cells or neuroblasts undergo typical asymmetric cell division. An evolutionally conserved protein complex, comprising atypical protein kinase C (aPKC), Bazooka (Par-3) and Par-6, organizes cell polarity to direct these asymmetric divisions. Aurora-A (AurA) is a key molecule that links the divisi...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.050955
更新日期：2009-09-15 00:00:00
abstract：:Actin cytoskeleton self-organization in two cell types, fibroblasts and epitheliocytes, was studied in cells confined to isotropic adhesive islands. In fibroblasts plated onto islands of optimal size, an initially circular actin pattern evolves into a radial pattern of actin bundles that undergo asymmetric chiral swir...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.220780
更新日期：2019-03-07 00:00:00
abstract：:The metabolism of PI(3,5)P2 is regulated by the PIKfyve, VAC14 and FIG4 complex, mutations in which are associated with hypopigmentation in mice. These pigmentation defects indicate a key, but as yet unexplored, physiological relevance of this complex in the biogenesis of melanosomes. Here, we show that PIKfyve activi...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.229500
更新日期：2019-02-28 00:00:00
abstract：:Little is known of the molecular basis for the diversity of microtubule structure and function found within the eukaryotic flagellum. Antibodies that discriminate between tyrosinated alpha tubulin and post-translationally detyrosinated alpha tubulin were used to localize these complementary tubulin isoforms in flagell...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1998-02-01 00:00:00
abstract：:During the last phase of oogenesis in Drosophila, nurse cell cytoplasm can be seen to be streaming into the growing oocyte when visualized in time-lapse films. This process can be reversibly inhibited by cytochalasins. The distribution of F-actin filaments in the nurse cells has been studied by staining with rhodamine...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1986-02-01 00:00:00
abstract：:Diploid yeast, like most eukaryotes, can undergo meiotic differentiation to form haploid gametes. Meiotic differentiation and cell growth (proliferation) are mutually exclusive programs, and in yeast the switch between growth and meiosis is controlled by nutritional signals. The signaling pathways that mediate nutriti...
journal_title：Journal of cell science
pub_type： 杂志文章,评审
doi：10.1242/jcs.00460
更新日期：2003-06-01 00:00:00
abstract：:alpha3beta1-integrin is abundantly expressed in the epidermis, and in mice, ablation of the alpha3 gene results in embryonic defects and perinatal lethality. To determine the role of alpha3-integrin in adult skin development, we grafted skin from newborn alpha3-integrin-deficient mice on to ICRF nu/nu recipients. We r...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.00475
更新日期：2003-07-01 00:00:00
