Dimerization and endocytosis of the sucrose transporter StSUT1 in mature sieve elements
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Dimerization and endocytosis of the sucrose transporter StSUT1 in mature sieve elements. / Liesche, Johannes; Schulz, Alexander; Krügel, Undine; Grimm, Bernhard; Kühn, Christina.
In: Plant Signalling & Behavior, Vol. 3, No. 12, 2008, p. 1136-1137.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Dimerization and endocytosis of the sucrose transporter StSUT1 in mature sieve elements
AU - Liesche, Johannes
AU - Schulz, Alexander
AU - Krügel, Undine
AU - Grimm, Bernhard
AU - Kühn, Christina
PY - 2008
Y1 - 2008
N2 - The sucrose transporter StSUT1 from Solanum tuberosum was shown to be regulated post-translationally by redox reagents. Its activity is increased at least 10-fold in the presence of oxidizing agents if expressed in yeast. Oxidation has also an effect on plasma membrane targeting and dimerization of the protein. In response to oxidizing agents, StSUT1 is targeted to lipid raft-like microdomains and SUT1 protein is detectable in the detergent resistant membrane fraction of plant plasma membranes. Interestingly, StSUT1 treated with brefeldin A seems to aggregate in endocytic compartments in mature sieve elements.1 Further analysis of SUT1 targeting will certainly provide more information about the putative involvement of lipid raft-like microdomains in endocytic events. We provide here additional information on the dimerization and endocytosis of the SUT1 protein. The oligomerization of overexpressed SoSUT1 from Spinacia oleracea in transgenic potato plants was analyzed by two-dimensional gel electrophoresis and endocytosis of the StSUT1 protein was confirmed by immunogold labeling.
AB - The sucrose transporter StSUT1 from Solanum tuberosum was shown to be regulated post-translationally by redox reagents. Its activity is increased at least 10-fold in the presence of oxidizing agents if expressed in yeast. Oxidation has also an effect on plasma membrane targeting and dimerization of the protein. In response to oxidizing agents, StSUT1 is targeted to lipid raft-like microdomains and SUT1 protein is detectable in the detergent resistant membrane fraction of plant plasma membranes. Interestingly, StSUT1 treated with brefeldin A seems to aggregate in endocytic compartments in mature sieve elements.1 Further analysis of SUT1 targeting will certainly provide more information about the putative involvement of lipid raft-like microdomains in endocytic events. We provide here additional information on the dimerization and endocytosis of the SUT1 protein. The oligomerization of overexpressed SoSUT1 from Spinacia oleracea in transgenic potato plants was analyzed by two-dimensional gel electrophoresis and endocytosis of the StSUT1 protein was confirmed by immunogold labeling.
U2 - 10.4161/psb.3.12.7096
DO - 10.4161/psb.3.12.7096
M3 - Journal article
C2 - 19704459
VL - 3
SP - 1136
EP - 1137
JO - Plant Signalling & Behavior
JF - Plant Signalling & Behavior
SN - 1559-2316
IS - 12
ER -
ID: 86211714