Neutrophil elastase sorting involves plasma membrane trafficking requiring the C-terminal propeptide.

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Tapper, HansLund University,Lunds universitet,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine (author)

Neutrophil elastase sorting involves plasma membrane trafficking requiring the C-terminal propeptide.

Article/chapterEnglish2006

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Elsevier BV,2006

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LIBRIS-ID:oai:lup.lub.lu.se:ba6a66a3-3420-4a9f-a791-010364fbbf02
https://lup.lub.lu.se/record/161285URI
https://doi.org/10.1016/j.yexcr.2006.07.011DOI

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Language:English
Summary in:English

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The primary granules/secretory lysosomes of neutrophils store mature neutrophil elastase (NE) as a luminal protein after proteolytic removal of N-terminal and C-terminal pro-peptides from a proform of NE. The N-terminal pro-peptide prevents premature activation that might be toxic to the cell, but the C-terminal pro-peptide has no defined function. In this study, we investigated the role of the C-terminal pro-peptide in trafficking of NE by expressing, in rat basophilic leukemia (RBL) cells, both wild-type NE and the mutant NE/Delta 248-267, which lacks the C-terminal pro-peptide. Both transfected proteins were found to be targeted to secretory lysosomes. in addition, results from antibody ligation and cell-surface biotinylation indicated that proform of NE was targeted to the plasma membrane, and then subjected to endocytosis. The results were supported by the detection of targeting of the proform to the plasma membrane followed by internalization both in RBL cells and normal granulopoietic precursor cells. Targeting of NE to the plasma membrane required the C-terminal pro-peptide as NE/ Delta 248-267 expressed in RBL cells bypassed plasma membrane trafficking. our results indicate targeting of a population of NE to the plasma membrane and internalization dependent on the C-terminal NE pro-peptide. (c) 2006 Elsevier Inc. All rights reserved.

Subject headings and genre

MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Hematologi hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Hematology hsv//eng
MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Infektionsmedicin hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Infectious Medicine hsv//eng
neutrophil elastase
sorting
pro-peptide
secretory lysosome
membrane
trafficking

Added entries (persons, corporate bodies, meetings, titles ...)

Källquist, LindaLund University,Lunds universitet,Avdelningen för hematologi och transfusionsmedicin,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Hematology and Transfusion Medicine,Department of Laboratory Medicine,Faculty of Medicine(Swepub:lu)hema-lka (author)
Johnsson, EllinorLund University,Lunds universitet,Avdelningen för hematologi och transfusionsmedicin,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Hematology and Transfusion Medicine,Department of Laboratory Medicine,Faculty of Medicine(Swepub:lu)efor-ejo (author)
Persson, Ann-MajLund University,Lunds universitet,Avdelningen för hematologi och transfusionsmedicin,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Hematology and Transfusion Medicine,Department of Laboratory Medicine,Faculty of Medicine(Swepub:lu)efor-amp (author)
Hansson, MarkusLund University,Lunds universitet,Avdelningen för hematologi och transfusionsmedicin,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Hematology and Transfusion Medicine,Department of Laboratory Medicine,Faculty of Medicine(Swepub:lu)hema-mha (author)
Olsson, IngeLund University,Lunds universitet,Avdelningen för hematologi och transfusionsmedicin,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Hematology and Transfusion Medicine,Department of Laboratory Medicine,Faculty of Medicine(Swepub:lu)efor-iol (author)
InfektionsmedicinSektion III (creator_code:org_t)

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In:Experimental Cell Research: Elsevier BV312:18, s. 3471-34841090-24220014-4827

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