A role for giantin in docking COPI vesicles to Golgi membranes
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A role for giantin in docking COPI vesicles to Golgi membranes. / Sönnichsen, B; Lowe, M; Levine, T; Jämsä, E; Dirac-Svejstrup, B; Warren, G.
I: The Journal of Cell Biology, Bind 140, Nr. 5, 09.03.1998, s. 1013-21.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - A role for giantin in docking COPI vesicles to Golgi membranes
AU - Sönnichsen, B
AU - Lowe, M
AU - Levine, T
AU - Jämsä, E
AU - Dirac-Svejstrup, B
AU - Warren, G
PY - 1998/3/9
Y1 - 1998/3/9
N2 - We have previously shown that p115, a vesicle docking protein, binds to two proteins (p130 and p400) in detergent extracts of Golgi membranes. p130 was identified as GM130, a Golgi matrix protein, and was shown to act as a membrane receptor for p115. p400 has now been identified as giantin, a Golgi membrane protein with most of its mass projecting into the cytoplasm. Giantin is found on COPI vesicles and pretreatment with antibodies inhibits both the binding of p115 and the docking of these vesicles with Golgi membranes. In contrast, GM130 is depleted from COPI vesicles and inhibition of the GM130 on Golgi membranes, using either antibodies or an NH2-terminal GM130 peptide, inhibits p115 binding and vesicle docking. Together these results suggest that COPI vesicles are docked by giantin on the COPI vesicles and GM130 on Golgi membranes with p115 providing a bridge.
AB - We have previously shown that p115, a vesicle docking protein, binds to two proteins (p130 and p400) in detergent extracts of Golgi membranes. p130 was identified as GM130, a Golgi matrix protein, and was shown to act as a membrane receptor for p115. p400 has now been identified as giantin, a Golgi membrane protein with most of its mass projecting into the cytoplasm. Giantin is found on COPI vesicles and pretreatment with antibodies inhibits both the binding of p115 and the docking of these vesicles with Golgi membranes. In contrast, GM130 is depleted from COPI vesicles and inhibition of the GM130 on Golgi membranes, using either antibodies or an NH2-terminal GM130 peptide, inhibits p115 binding and vesicle docking. Together these results suggest that COPI vesicles are docked by giantin on the COPI vesicles and GM130 on Golgi membranes with p115 providing a bridge.
KW - Animals
KW - Autoantigens
KW - Carrier Proteins/metabolism
KW - Coated Vesicles/metabolism
KW - Coatomer Protein
KW - Golgi Apparatus/metabolism
KW - Golgi Matrix Proteins
KW - Intracellular Membranes/metabolism
KW - Membrane Proteins/metabolism
KW - Rats
KW - Vesicular Transport Proteins
U2 - 10.1083/jcb.140.5.1013
DO - 10.1083/jcb.140.5.1013
M3 - Journal article
C2 - 9490716
VL - 140
SP - 1013
EP - 1021
JO - Journal of Cell Biology
JF - Journal of Cell Biology
SN - 0021-9525
IS - 5
ER -
ID: 333770435