Abstract：
:Proprotein Convertase 7 (PC7) is a Furin-like endoprotease that cleaves precursor proteins at basic amino acids. PC7 is concentrated in the trans-Golgi network (TGN) but it shuttles between the plasma membrane and the TGN depending on sequences in the cytoplasmic tail. A short region containing a three amino acids motif, P724-L725-C726, is essential and sufficient for internalization of PC7 but not for TGN localization, which requires the additional presence of the juxtamembrane region. In this study we have investigated the contribution of a cluster of basic amino acids and two reversibly palmitoylated cysteine residues to endocytic trafficking. Stable cell lines overexpressing chimeric proteins (CD25 and CD46) containing the cytoplasmic domain of PC7 in which the basic cluster alone or together with both palmitoylated cysteines are mutated showed enhanced surface expression as demonstrated by immunofluorescence experiments and surface biotinylation. The mutant proteins no longer recycled to the TGN in antibody uptake experiments and accumulated in an endosomal compartment. Recycling of wild type PC7 to the TGN is blocked by nocodazole, suggesting that PC7 shuttles to the TGN via late endosomes, similar to Furin. Unlike furin, however, PC7 was found to recycle to a region within the TGN, which is deficient in sialyltransferase, as shown by resialylation experiments. In conclusion, a novel motif, composed of a basic amino acid cluster and two palmitoylated cysteines are essential for TGN localization and endocytic trafficking.
journal_name
Eur J Cell Bioljournal_title
European journal of cell biologyauthors
Declercq J,Ramos-Molina B,Sannerud R,Brouwers B,Pruniau VPEG,Meulemans S,Plets E,Annaert W,Creemers JWMdoi
10.1016/j.ejcb.2017.03.010subject
Has Abstractpub_date
2017-08-01 00:00:00pages
432-439issue
5eissn
0171-9335issn
1618-1298pii
S0171-9335(16)30198-4journal_volume
96pub_type
杂志文章abstract：:Tektins comprise a family of filament-forming proteins that are known to be coassembled with tubulins to form ciliary and flagellar microtubules. Recently we described the sequence of the first mammalian tektin protein, Tekt1 (from mouse testis), which is most homologous with sea urchin tektin C. We have now investiga...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1078/0171-9335-00097
更新日期：2000-10-01 00:00:00
abstract：:Secretory granules of GH4C1 cells, a rat pituitary tumor cell line, are known to be induced by the treatment of estradiol (E2), insulin, and epidermal growth factor (EGF). We examined changes in the localization of cathepsins B, H, and L, lysosomal cysteine proteinases, in GH4C1 cells before and after hormonal treatme...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1995-08-01 00:00:00
abstract：:D-amino acid oxidase is expressed to a high level in the yeast Rhodotorula gracilis (0.3% of total cell protein) through induction by D-alanine in a defined growth medium. Monospecific polyclonal antibodies against pure enzyme were obtained. Western blot analysis showed that the enzyme is synthesized as the mature pol...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1991-06-01 00:00:00
abstract：:We examined the secretion of three serum proteins, albumin (RSA), alpha 2 mu-globulin (alpha 2 mu G), and transferrin (Trf), in the isolated perfused liver. Within 4 h of perfusion, only 20 to 35% of previously synthesized proteins were secreted by the liver into the recirculating medium. Low temperature inhibited the...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1991-12-01 00:00:00
abstract：:Cell adhesion to the extracellular matrix (ECM) is important in a variety of physiological and pathologic processes, including development, tumor invasion, and metastasis. Integrin-mediated attachment to ECM proteins has emerged to cue events primitively important for the transformed phenotype of human cancer cells. C...
journal_title：European journal of cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ejcb.2020.151083
更新日期：2020-05-01 00:00:00
abstract：:The subcellular site of accumulation of non-esterified cholesterol and sphingomyelin in lipid-laden livers and spleens from rats given multiple intravenous injections with liposomes made up of these lipids were investigated by morphological and biochemical techniques. The subcellular fractionation of liver homogenates...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1985-05-01 00:00:00
abstract：:Monoclonal antibodies to the constitutive desmosomal glycoprotein desmoglein were characterized whose epitopes are located intracellularly, i.e., in the cytoplasmic portion of this molecule, and contribute to the structure of the desmosomal plaque. Using one of these antibodies (DG3.10), a peptide was isolated from a ...
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：:Tubular aggregates are specific subcellular structures that appear in skeletal muscle fibres under different pathological conditions. The origin of the tubular aggregates is generally ascribed to proliferating membranes of sarcoplasmic reticulum. There are, however, histochemical indications for the presence of mitoch...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1078/0171-9335-00230
更新日期：2002-02-01 00:00:00
abstract：:HeLa cells in mitosis are fixed by KMnO4 to obtain a good preservation of membranes. Inside and around the mitotic apparatus a vesicular, a tubular and a cisternal type of membranes are demonstrated. Small spherical or ellipsoidal vesicles are distributed at random in the spindle area. Zones around the poles and in th...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1980-08-01 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
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journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1984-01-01 00:00:00
abstract：:Polycationic derivatives of ferritin containing primary amino groups (CFah) or tertiary amino groups (CFdmp) were potent platelet agonists inducing shape change, aggregation and secretion, but also agglutination in the presence of EDTA. Pretreatment of platelets with neuraminidase, PGE1, indomethacin, or creatine kina...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1986-03-01 00:00:00
abstract：:Pretreatment of Acanthamoeba castellanii (Neff strain) with sublytic concentrations of surface-active alkyltrimethylammonium salts (C12, C14, C16) enhanced ConA-mediated agglutination of the amoebae. Treatment with the surfactants alone did not affect the "spontaneous" agglutination of the amoebae. Electron microscopi...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1981-08-01 00:00:00
abstract：:Ovary gland cells of Aptenia cordifolia were exposed to 100 micrograms/ml cytochalasin B (cyt B) for 30 or 60 min during the phase of granulocrine polysaccharide secretion. The drug caused a congestion of Golgi vesicles around the dictyosomes, probably resulting from an inhibition of the vesicle migration towards the ...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1983-01-01 00:00:00
abstract：:HeLa cells were treated with different concentrations of an inhibitor of the proteasome chymotrypsin-like activity, the peptidyl aldehyde N-benzyloxycarbonyl-Ile-Glu(O-t-butyl)-Ala-leucinal (PSI). A detailed analysis, which included flow cytometry, cell counting and morphological assessment, was performed. PSI treatme...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1996-06-01 00:00:00
abstract：:The milk yeast Kluyveromyces lactis is an alternative model yeast to the well established Saccharomyces cerevisiae. The cell wall of these fungi consists of polysaccharides (i.e. long chains of β-1,3- and β-1,6-linked sugar chains and some chitin) and mannoproteins, both of which are continually adapted to environment...
journal_title：European journal of cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ejcb.2011.04.005
更新日期：2011-09-01 00:00:00
abstract：:The neonatal heart is a very useful tool for the study of biochemical pathways and properties of cardiomyocytes and as it has the potential to regenerate for a brief period of time from birth; it is also useful to study cardiac regeneration. However, as the heart matures, this proficiency for regeneration is reduced. ...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1016/j.ejcb.2015.06.009
更新日期：2015-10-01 00:00:00
abstract：:Dipyridamole (DPD), a widely used anti-thrombotic agent, inhibits in vitro directional migration of 10T1/2 mouse embryo cells in a dose dependent way. The inhibition is detectable at DPD concentrations comparable to those in human plasma after oral intake of the drug. Using a model for quantitative shape change analys...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1984-11-01 00:00:00
abstract：:We have investigated the effect of stepwise truncating the carboxyterminal domain ("tail") of the intermediate filament (IF) protein vimentin of the clawed toad, Xenopus laevis, on filament assembly in vitro and, using cell transfection, in vivo and also on the cellular topology of the structures formed. All truncatio...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1995-02-01 00:00:00
abstract：:To study molecules secreted from cultured plant cells that promote development, maize microspores were transferred into culture and the conditioned media were collected over time and analysed. Electrophoresis indicated that both non-glycosylated and glycosylated proteins including arabinogalactan proteins (AGPs) appea...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1078/0171-9335-00378
更新日期：2004-07-01 00:00:00
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journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1994-12-01 00:00:00
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journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1016/j.ejcb.2011.01.009
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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
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journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1980-06-01 00:00:00
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journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1990-08-01 00:00:00
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journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1984-09-01 00:00:00
abstract：:p120 catenin (p120ctn) is required for the stability of classic cadherins at the cell surface and is thought to play a central role in modulating cell-cell adhesion. Cytoplasmic p120ctn promotes cell motility, and probably other activities, by modulating the activities of RhoA, Rac and Cdc42. E-cadherin is expressed i...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1016/j.ejcb.2016.10.003
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journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1991-06-01 00:00:00
abstract：:The lectins Griffonia simplicifolia I and Lycopersicon esculentum were used to assess the presence of endothelium-specific glycoproteins in the microvasculature of the rat myocardium, diaphragm and superficial cerebral cortex. Organs fixed by intravascular perfusion were processed to obtain semithin (0.5 micron) and t...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1990-02-01 00:00:00
abstract：:Application of carbon tetrachloride produced a progressive proliferation of tight junctions in the rat liver. This system proved to be rapid and highly reproducable and affords the opportunity for tracing the fate of tight junctions in freeze-fracture replicas, facilitating investigations on their formation and functi...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1979-10-01 00:00:00
