Abstract：
:The recently established in vitro assay of condensation-sorting of pancreatic enzymes to the zymogen granule membrane (ZGM) (Dartsch, H., R. Kleene, H. F. Kern: In vitro condensation-sorting of enzyme proteins isolated from rat pancreatic acinar cells. Eur. J. Cell Biol. 75, 211-222 (1998)) was used to study the involvement of a novel secretory lectin, ZG16p, in the binding of aggregated proteins to ZGM. In isolated zymogen granules the lectin is predominantly associated with the membrane and can be removed to a large extent by bicarbonate treatment at pH 11.5. In the in vitro assay in which secretory proteins aggregate at pH 5.9 but only those bound to ZGM are sedimented into the pellet, ZG16p is significantly enriched in this pellet fraction, shown both by biochemical and fine structural analysis. Pretreatment of ZGM with anti-ZG16p antibody before their addition to the assay inhibits binding to the membrane by about 50%. Similarly, removal of ZG16p or prevention of its interaction with glycosaminoglycans (GAGs) in the submembranous matrix of ZGM by sodium bicarbonate treatment or chondroitinase digestion of ZGM also inhibits the binding efficiency of secretory proteins to ZGM to about the same extent. We conclude that ZG16p may act as a linker molecule between the submembranous matrix on the luminal side of ZGM and aggregated secretory proteins during granule formation in the TGN.
journal_name
Eur J Cell Bioljournal_title
European journal of cell biologyauthors
Kleene R,Dartsch H,Kern HFdoi
10.1016/S0171-9335(99)80009-0subject
Has Abstractpub_date
1999-02-01 00:00:00pages
79-90issue
2eissn
0171-9335issn
1618-1298pii
S0171-9335(99)80009-0journal_volume
78pub_type
杂志文章abstract：:The differences in the content of trace elements (Fe, Cu, Zn, Br, Rb and Sr) in phasic and tonic scallop adductor muscles have been revealed by using X-ray fluorescence analysis. The phasic (yellow) muscles have been found to be richer in Fe and Cu while more deficient in Zn and Br as compared to the tonic (white) mus...
journal_title：European journal of cell biology
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更新日期：1981-04-01 00:00:00
abstract：:Members of the transforming growth factor beta (TGF-beta) superfamily of signaling molecules are involved in the regulation of many developmental processes that involve the interaction between mesenchymal and epithelial tissues. Smad7 is a potent inhibitor of many members of the TGF-beta family, notably TGF-beta and a...
journal_title：European journal of cell biology
pub_type： 杂志文章
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更新日期：2007-12-01 00:00:00
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journal_title：European journal of cell biology
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doi：10.1016/j.ejcb.2005.11.003
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abstract：:We have studied, at the electron microscope level, the reorganizations of nucleolar ultrastructure induced by actinomycin D (AMD) in different conditions of drug treatment associated with an inhibition of rRNA synthesis. We have analyzed in parallel the localizations of ribosomal genes, of their transcripts, of variou...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1992-06-01 00:00:00
abstract：:Rho GTPases are ubiquitously expressed across the eukaryotes where they act as molecular switches participating in the regulation of many cellular processes. We present an inventory of proteins involved in Rho-regulated signaling pathways in Dictyostelium discoideum that have been identified in the completed genome se...
journal_title：European journal of cell biology
pub_type： 杂志文章,评审
doi：10.1016/j.ejcb.2006.04.011
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abstract：:The transport of the chitin synthase III, Chs3p, to the plasma membrane is temporally and spatially regulated. Chs3p is delivered to the plasma membrane at the beginning of the cell cycle, forming chitin rings, and at the end of the cell cycle, forming the primary septum. During the rest of the cell cycle, it is maint...
journal_title：European journal of cell biology
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abstract：:The P446L mutant Drosophila importin-beta (P446L-imp-beta) has been reported to prohibit--in dominant negative fashion--nuclear envelope (NE) assembly. Along elucidating the mode of action of P446L-imp-beta we studied in vitro NE assembly on Sepharose beads. While Drosophila embryo extracts support NE assembly over Se...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1078/0171-9335-00324
更新日期：2003-07-01 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
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journal_title：European journal of cell biology
pub_type： 杂志文章
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更新日期：1994-04-01 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.2006.11.002
更新日期：2007-12-01 00:00:00
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journal_title：European journal of cell biology
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journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1987-06-01 00:00:00
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journal_title：European journal of cell biology
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doi：10.1078/0171-9335-00230
更新日期：2002-02-01 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：1986-03-01 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：1992-06-01 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.2010.03.004
更新日期：2010-08-01 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.2011.08.003
更新日期：2011-12-01 00:00:00
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journal_title：European journal of cell biology
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journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1016/S0171-9335(99)80036-3
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journal_title：European journal of cell biology
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journal_title：European journal of cell biology
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journal_title：European journal of cell biology
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doi：
更新日期：1986-10-01 00:00:00
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journal_title：European journal of cell biology
pub_type： 杂志文章
doi：10.1078/0171-9335-00204
更新日期：2001-12-01 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：1981-02-01 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：1983-09-01 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
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journal_title：European journal of cell biology
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journal_title：European journal of cell biology
pub_type： 杂志文章
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更新日期：1996-10-01 00:00:00
abstract：:The major families of proteoglycans in human arterial tissue have been localized and characterized by electron microscopy. After staining with the polycationic dye cuprolinic blue in the presence of a critical electrolyte concentration, three differently sized populations of proteoglycan-cuprolinic blue precipitates a...
journal_title：European journal of cell biology
pub_type： 杂志文章
doi：
更新日期：1987-12-01 00:00:00
abstract：:We have used plant root tips frozen under high pressure in conjunction with freeze-fracture electron microscopy a) to evaluate the quality of freezing of unfixed, non-cryoprotected tissues obtainable with this method, b) to examine the structure of cells frozen under high pressure, c) to evaluate the usefulness of hig...
journal_title：European journal of cell biology
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doi：
更新日期：1988-04-01 00:00:00
