Abstract:
:The signal peptidases from both chicken oviduct and dog pancreas microsomes have been detected by a post-translational assay and, in the case of dog microsomes, by a cotranslational assay. This proteolytic activity is not sensitive to a variety of conventional protease inhibitors under the conditions used in these assays. Using a synthetic ester substrate, two additional activities have been observed in oviduct microsomes, but neither appears to correspond to the signal peptidase activity. Using cDNA as a probe for specific mRNAs, it was shown that polysomes, in the process of synthesizing secretory proteins, bind to microsomal membrane vesicles. This binding appears to be dependent on the nature of the translation product (presumably the specific signal peptide) rather than on the mRNA itself. In addition, pretreatment of the membrane vesicles with N-ethyl maleimide prevents the vectorial discharge and processing of several secretory proteins but does not inhibit the binding of their polysomes to membranes.
journal_name
Ann N Y Acad Scijournal_title
Annals of the New York Academy of Sciencesauthors
Thibodeau SN,Walsh KAdoi
10.1111/j.1749-6632.1980.tb47251.xsubject
Has Abstractpub_date
1980-01-01 00:00:00pages
180-91eissn
0077-8923issn
1749-6632journal_volume
343pub_type
杂志文章abstract::In many scientific and technical applications, a three-dimensional (3D) object must be reconstructed, either to assist in understanding the object's structure or to ease its automatic handling and analysis. Volume reconstruction has been used in health care to diagnose, simulate, facilitate surgical planning, develop ...
journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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更新日期:2000-04-01 00:00:00
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
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