TY - JOUR
T1 - Trafficking of human ADAM 12-L: retention in the trans-Golgi network.
AU - Hougaard, S
AU - Loechel, F
AU - Xu, X
AU - Tajima, R
AU - Albrechtsen, R
AU - Wewer, U M
N1 - Keywords: ADAM Proteins; Animals; Biological Transport; CHO Cells; COS Cells; Cell Compartmentation; Cell Membrane; Cricetinae; Cytoplasm; Golgi Apparatus; Hela Cells; Humans; Immunohistochemistry; Membrane Proteins; Metalloendopeptidases; Microscopy, Fluorescence; Octoxynol
PY - 2000
Y1 - 2000
N2 - We have investigated the trafficking of the membrane-anchored form of human ADAM 12 (ADAM 12-L) fused to a green fluorescence protein tag. Subcellular localization of the protein in transiently transfected cells was determined by fluorescence microscopy and trypsin sensitivity. Full-length ADAM 12-L was retained in a perinuclear compartment, which was shown to be the trans-Golgi network. In contrast, ADAM 12-L lacking the cytoplasmic domain reached the cell surface. Based on analysis of deletions and mutations of the cytoplasmic tail of ADAM 12-L, the retention signal is comprised of both the cytoplasmic and transmembrane domains, but not the Src homology 3 domain (SH3) binding sites. These results raise the possibility that a trafficking checkpoint in the trans-Golgi network is one of the cellular mechanisms for regulation of ADAM 12-L function, by allowing a rapid release of ADAM 12-L to the cell surface under specific stimuli.
AB - We have investigated the trafficking of the membrane-anchored form of human ADAM 12 (ADAM 12-L) fused to a green fluorescence protein tag. Subcellular localization of the protein in transiently transfected cells was determined by fluorescence microscopy and trypsin sensitivity. Full-length ADAM 12-L was retained in a perinuclear compartment, which was shown to be the trans-Golgi network. In contrast, ADAM 12-L lacking the cytoplasmic domain reached the cell surface. Based on analysis of deletions and mutations of the cytoplasmic tail of ADAM 12-L, the retention signal is comprised of both the cytoplasmic and transmembrane domains, but not the Src homology 3 domain (SH3) binding sites. These results raise the possibility that a trafficking checkpoint in the trans-Golgi network is one of the cellular mechanisms for regulation of ADAM 12-L function, by allowing a rapid release of ADAM 12-L to the cell surface under specific stimuli.
U2 - 10.1006/bbrc.2000.3295
DO - 10.1006/bbrc.2000.3295
M3 - Journal article
C2 - 10964655
SN - 0006-291X
VL - 275
SP - 261
EP - 267
JO - Biochemical and Biophysical Research Communications
JF - Biochemical and Biophysical Research Communications
IS - 2
ER -