1987
DOI: 10.1083/jcb.104.2.221
|View full text |Cite
|
Sign up to set email alerts
|

A vesicular intermediate in the transport of hepatoma secretory proteins from the rough endoplasmic reticulum to the Golgi complex.

Abstract: Abstract. We have identified a vesicle fraction that contains arantitrypsin and other human HepG2 hepatoma secretory proteins en route from the rough endoplasmic reticulum (RER) to the cis face of the Golgi complex.[35S]Methionine pulse-labeled cells were chased for various periods of time, and then a postnuclear supernatant fraction was resolved on a shallow sucrose-D20 gradient. This intermediate fraction has a density lighter than RER or Golgi vesicles. Most chantitrypsin in this fraction (P1) bears N-linke… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

0
58
0

Year Published

1990
1990
2017
2017

Publication Types

Select...
7
3

Relationship

0
10

Authors

Journals

citations
Cited by 127 publications
(58 citation statements)
references
References 43 publications
(47 reference statements)
0
58
0
Order By: Relevance
“…Single amino acid changes in Qa-2 and the CD16 IgG Fc receptor converted a PI-glycanlinked protein to a transmembrane protein and truncation of the hydrophobic domain of PLAP produced a secreted protein, but no other single amino acid changes are known to convert a PI-glycan-linked protein to a secreted protein Lanier, et al ., 1989;Kurosaki and Ravetch, 1989) . This finding raises the possibility that AP found in the serum may be a secreted form of the protein rather than a phospholipase cleavage product of cell surface AP Other mutations in PLAP and DAF that prevent PI-glycan addition result in the accumulation of the mutant protein inside the cell, presumably within the ER or Golgi complex (Cara et al, 1989 ;Micanovic et al, 1990;Lodish, 1988) . The mechanism for retention is not clear, but improper folding of the mutant proteins has been proposed as a possibility.…”
Section: Discussionmentioning
confidence: 99%
“…Single amino acid changes in Qa-2 and the CD16 IgG Fc receptor converted a PI-glycanlinked protein to a transmembrane protein and truncation of the hydrophobic domain of PLAP produced a secreted protein, but no other single amino acid changes are known to convert a PI-glycan-linked protein to a secreted protein Lanier, et al ., 1989;Kurosaki and Ravetch, 1989) . This finding raises the possibility that AP found in the serum may be a secreted form of the protein rather than a phospholipase cleavage product of cell surface AP Other mutations in PLAP and DAF that prevent PI-glycan addition result in the accumulation of the mutant protein inside the cell, presumably within the ER or Golgi complex (Cara et al, 1989 ;Micanovic et al, 1990;Lodish, 1988) . The mechanism for retention is not clear, but improper folding of the mutant proteins has been proposed as a possibility.…”
Section: Discussionmentioning
confidence: 99%
“…Properly folded and oligomerized proteins are further modified in the Golgi area and vesicular transported to their predestined place, e.g. cell surface or extracellular secretion (Pfeffer and Rothman, 1987;Lodish, 1988). In contrast, ER resident proteins, both luminal ER soluble proteins and transmembrane ER proteins, escape from the default bulk flow transport by the presence of specific retention signals.…”
Section: Introductionmentioning
confidence: 99%
“…Although the precise function of GRP78-BiP has not yet been defined, more recently it has been suggested to have a general role in the folding and assembly of proteins in the ER (Gething et al, 1986;Munro and Pelham, 1986;Pelham, 1986), to mark aberrantly folded proteins destined for degradation (Gething et al, 1986;Dorner et al, 1987;Lodish, 1988;, or to aid in solubilizing aggregated proteins during times of stress (Munro and Pelham, 1986). Studies using viral membrane glycoproteins as models have implicated a role for GRP78-BiP in the general folding and assembly of proteins in the exocytic pathway.…”
Section: Introductionmentioning
confidence: 99%