Abstract：
:Hydrogencarbonate and chloride activated, ouabain-insensitive ATPase activities are demonstrated in the salt-absorbing rectum of larval dragonflies. Maximal activation is achieved at approx. 30 mM HCO3- and 20 mM Cl-, respectively. The stimulation of each anion obeys Michaelis-Menten kinetics Km values are 4.65 mM for HCO3-- and 10.25 mM for Cl--activation. The activating anion of one type of ATPase simultaneously exerts an inhibitory effect on the other. Cl--activation is also reduced by Mg.ATP in concentrations above 0.5 mM and by Tris-Hepes buffer exceeding 2.5 mM. Both anion-dependent ATPase activities are found enriched in subcellular membraneous fractions of the rectum. Thiocyanate inhibits both activities and causes a significant decrease in rectal uptake of radioactive chloride from hypo-osmotic external solution. In the case of HCO3- dependent ATPase a competitive inhibition as SCN- was found with an inhibitor constant of Ki=0.5 mM.
journal_name
Eur J Cell Bioljournal_title
European journal of cell biologyauthors
Komnick H,Schmitz M,Hinssen Hsubject
Has Abstractpub_date
1980-02-01 00:00:00pages
217-27issue
3eissn
0171-9335issn
1618-1298journal_volume
20pub_type
杂志文章abstract：:In the eye lens, three connexins have been detected in epithelial cells and bow region/differentiating fiber cells, suggesting the possible formation of heteromeric gap junction channels. To study possible interactions between Cx56 and Cx43, we stably transfected a normal rat kidney cell line (NRK) that expresses Cx43...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1078/0171-9335-00132
更新日期：2001-01-01 00:00:00
abstract：:Gap junctions are known to play a role in the control of cell proliferation, and connexins (Cx) are considered to be tumor suppressors. However, the effects of Cx on cell proliferation are dependent on the Cx which is expressed and on the cell type under consideration. We previously found that restoration of cell-to-c...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1078/0171-9335-00245
更新日期：2002-05-01 00:00:00
abstract：:Centaurin alpha-1 is a high-affinity PtdIns(3,4,5)P3-binding protein enriched in brain. Sequence analysis indicates centaurin alpha-1 contains two pleckstrin homology domains, ankyrin repeats and an Arf GAP homology domain, placing it in the AZAP family of phosphoinositide-regulated Arf GAPs. Other members of this fam...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1078/0171-9335-00416
更新日期：2004-10-01 00:00:00
abstract：:The plasma membrane of nucleated erythrocytes contains a microtubular marginal band which appears to be associated with the plasma membrane skeleton. In this report, we identify two families of cytoskeletal proteins which may be involved in such an association. These proteins, of molecular mass 78 kDa and 48 kDa on SD...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1991-02-01 00:00:00
abstract：:A zymogen granule fraction has been isolated from rat pancreas, and its purity has been assessed by biochemical and morphological criteria. Specific activities of two marker enzymes, amylase and chymotrypsin, are increased by 4.6 and 5.4-fold, respectively, as compared to the homogenate. The purified fraction is devoi...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1982-08-01 00:00:00
abstract：:Proteins that are concentrated in specific compartments of the endomembrane system in order to exert their organelle-specific function must possess specific localization signals that prevent their transport to distal regions of the exocytic pathway. Some resident proteins of the endoplasmic reticulum (ER) that are kno...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1078/S0171-9335(04)70025-4
更新日期：2000-04-01 00:00:00
abstract：:Gap junctions are transmembrane structures that directly connect the cytoplasm of adjacent cells, making intercellular communications possible. It has been shown that the behaviour of several tumours - such as bone tumours - is related to gap junction intercellular communications (GJIC). Several methodologies are avai...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1016/j.ejcb.2017.01.003
更新日期：2017-03-01 00:00:00
abstract：:Diaphanous-related formins (DRFs) drive the nucleation and elongation of linear actin filaments downstream of Rho GTPase signalling pathways. Dictyostelium formin C (ForC) resembles a DRF, except that it lacks a genuine formin homology domain 1 (FH1), raising the questions whether or not ForC can nucleate and elongate...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1016/j.ejcb.2013.07.001
更新日期：2013-06-01 00:00:00
abstract：:When virgin temperature-sensitive mutant cdc28 cells of the yeast Saccharomyces cerevisiae were incubated at restrictive temperatures, they continued to grow, reaching a maximum of 3.3-fold the original size after 24 h. The protein and RNA levels increased during the first 24 h, then gradually decreased. The cells tha...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1995-11-01 00:00:00
abstract：:Rho GTPase is a master regulator controlling cytoskeleton in multiple contexts such as cell migration, adhesion and cytokinesis. Of several Rho GTPases in mammals, the best characterized is the Rho subfamily including ubiquitously expressed RhoA and its homologs RhoB and RhoC. Upon binding GTP, Rho exerts its function...
journal_title：European journal of cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ejcb.2013.09.002
更新日期：2013-10-01 00:00:00
abstract：:Stereo immunofluorescence microscopy avoids the problem of juxtaposition of structures often encountered in normal fluorescence microscopy. The procedure has been used in conjunction with antibodies against microfilament associated proteins to reveal the arrangement of microfilaments in a rat mammary cell line both in...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1979-10-01 00:00:00
abstract：:The realization that a highly conserved family of membrane proteins are localized to transport vesicles and selectively interact with proteins anchored at appropriate target sites of membrane fusion inspired a simple and compelling explanation of how proteins might be transferred and segregated within the cell, the "S...
journal_title：European journal of cell biology
pub_type： 杂志文章,评审
doi：
更新日期：1997-07-01 00:00:00
abstract：:Mouse pituitary neurointermediate lobes were pulse-incubated in [3H] arginine or [3H] lysine for 10 min and then chase-incubated for periods 0 to 4h. The labeled peptides from the lobes were analysed by immunoprecipitation with specific antisera, and thereafter, by acid-urea polyacrylamide gel electrophoresis. Using t...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1981-12-01 00:00:00
abstract：:The presence of endo- and exoproteolytic activity in peroxisomes was detected in cell organelles purified from pea leaves. By PAGE using different exopeptidase substrates (L-aa-beta NA), one leucine aminopeptidase (AP) was found in peroxisomes. The peroxisomal AP was characterized as a serine protease and had a maxima...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1993-06-01 00:00:00
abstract：:The subcellular distribution of a recently described neutral trimming mannosidase, the Man9-mannosidase, has been investigated by immunoelectron microscopy in pig hepatocytes. This enzyme processes asparagine-linked N-acetylglucosamine2 mannose9 oligosaccharides by specifically cleaving three of the four alpha 1,2-lin...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1990-10-01 00:00:00
abstract：:Taking advantage of monoclonal antibodies raised against chick hypertrophic chondrocytes (BD5, LA5, AD2) and osteoblasts (SB1, SB2, SB3, SB5), we have investigated expression of differentiation stage-specific antigens by further differentiating hypertrophic chondrocytes. Expression of all antigens was developmentally ...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1995-06-01 00:00:00
abstract：:A monoclonal antibody (ID5) raised against the synthetic tetradecapeptide corresponding to the C-terminal region of detyrosinated alpha-tubulin showed an unexpected cross-reactivity with beta-tubulin from pig brain tissue. The specificity and the minimal epitope requirements of ID5 were characterized by competitive en...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1016/s0171-9335(99)80003-x
更新日期：1999-01-01 00:00:00
abstract：:In the mouse genome, 20 connexin genes have been detected that code for proteins of high sequence identity in the two extracellular loops, especially six conserved cysteine residues. The mouse connexin23 (Cx23) gene (Gje1) differs from all other connexin genes in vertebrates, since it codes for a protein that contains...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1016/j.ejcb.2008.08.004
更新日期：2009-02-01 00:00:00
abstract：:When epithelial cells reach confluency in vitro, a number of energy-requiring activities such as growth and motility are contact-inhibited. We investigated the possible role of the E-cadherin/catenin complex, which acts as an invasion suppressor, in contact inhibition. Three strategies for modulation of the complex we...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1997-12-01 00:00:00
abstract：:The subcellular distribution of blood group A gene specified alpha 1,3N-acetylgalactosaminyltransferase and its product was studied in human intestinal goblet cells by immunoelectron microscopy. The O-glycosylation step yielding blood group A-active glycoconjugates occurred in the trans region of the Golgi apparatus a...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1988-04-01 00:00:00
abstract：:Tight junctions (TJ) of the fascia occludens type can be rapidly assembled in the human colon adenocarcinoma cell line HT 29 under the influence of trypsin or ammonium sulfate. We have studied the influence of the metabolic inhibitors, dinitrophenol (DNP) and deoxyglucose (DG), on the induced formation of TJ in this c...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1987-10-01 00:00:00
abstract：:In flowering plants, gametes are formed in specialized haploid structures, termed gametophytes. The female gametophyte is a few-celled structure that integrates such diverse functions as pollen tube attraction, sperm cell release, gamete fusion and seed initiation. These processes are realized by distinct cell types, ...
journal_title：European journal of cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ejcb.2009.11.005
更新日期：2010-02-01 00:00:00
abstract：:Chlorpromazine (CPZ) at minimally effective concentrations accumulates mammalian cells in mitosis without lethal effects on the cells. Star-metaphase morphology similar to effects seen with classical antimitotic compounds probably results from the preferential action of CPZ on a specific class of microtubules--the pol...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1983-09-01 00:00:00
abstract：:In order to investigate the role of microfilaments in the crawling movements of lymphoid cells, we have analyzed the effects of botulinum C2 toxin and of cytochalasin D (cytoD) on the actin cytoskeleton and on the motility of a BW5147 T-lymphoma-derived cell line. Actin was ADP-ribosylated by C2 toxin in the living ce...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1995-04-01 00:00:00
abstract：:Changes in the surface morphology of regenerating rabbit, rat and frog corneal endothelial cells in vivo have been investigated by scanning electron microscopy. In adult tissue these cells do not normally divide unless given a stimulus, such as injury. Surfaces of quiescent rabbit and rat cells are devoid of microvill...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1983-07-01 00:00:00
abstract：:Specific rabbit antisera were prepared against purified aggregation factor and its membrane-associated receptor, baseplate, derived from the marine sponge. Microciona prolifera. They were utilized in conjunction with fluorescent-labeled goat anti-rabbit IgG in an assay to demonstrate the surface localizations of both ...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1980-12-01 00:00:00
abstract：:Lipopolysaccharide (LPS) is known to mediate angiogenic effects in endothelial cells. The underlying mechanisms, however, remain largely unknown. In this study, we showed that LPS induced high motility group box protein 1 (HMGB1) secretion in human pulmonary microvascular endothelial cells (HPMECs). Knockdown and over...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1016/j.ejcb.2017.07.004
更新日期：2017-10-01 00:00:00
abstract：:The membrane characteristics of amphioxus myotome cells were investigated using the chopped-current clamp method. The extremely thin myotome lamellae had a membrane resistance of 2.2 to 7.7 k omega cm2 and a capacity of 0.4 to 1.3 microF/micron2. The steady state current-voltage relation showed outward rectification. ...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1982-10-01 00:00:00
abstract：:Expression of the Cdx1 homeobox gene in epithelial intestinal cells promotes cellular growth and differentiation. Cdx1and the Pancreatitis Associated Protein I (PAP I) are concomitantly expressed in the epithelial cells of the lower part of the intestinal crypts. Because Cdx1 is a transcription factor and PAP I, in ot...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1078/0171-9335-00148
更新日期：2001-02-01 00:00:00
abstract：:Chondrocyte terminal differentiation is associated with cellular hypertrophy increased activity of plasma membrane alkaline phosphatase and the synthesis of collagen type X. The hypertrophic phenotype of cultured chondrocytes can be stimulated by ascorbic acid but the underlying mechanisms for this phenotypic change a...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1016/s0171-9335(98)80023-x
更新日期：1998-06-01 00:00:00
