Caveolin-3 is associated with the T-tubules of mature skeletal muscle fibers
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Caveolin-3 is associated with the T-tubules of mature skeletal muscle fibers. / Ralston, E; Ploug, Thorkil.
I: Experimental Cell Research, Bind 246, Nr. 2, 01.02.1999, s. 510-5.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Caveolin-3 is associated with the T-tubules of mature skeletal muscle fibers
AU - Ralston, E
AU - Ploug, Thorkil
N1 - Copyright 1999 Academic Press.
PY - 1999/2/1
Y1 - 1999/2/1
N2 - Caveolae are abundant in skeletal muscle and their coat contains a specific isoform of caveolin, caveolin-3. It has been suggested that during muscle development, caveolin-3 is associated with the T-tubules, but that in adult muscle it is found on the plasma membrane only. We have studied the distribution of caveolin-3 in single skeletal muscle fibers from adult rat soleus by confocal immunofluorescence and by immunogold electron microscopy. We found that caveolin-3 occurs at the highest density on the plasma membrane but is also present in the core of the fibers, at the I-band/A-band interface where it is associated with the T-tubules. In neither domain of the muscle surface does caveolin-3 colocalize with the glucose transporter GLUT4 and there is no evidence for internalization of the caveolae in muscle.
AB - Caveolae are abundant in skeletal muscle and their coat contains a specific isoform of caveolin, caveolin-3. It has been suggested that during muscle development, caveolin-3 is associated with the T-tubules, but that in adult muscle it is found on the plasma membrane only. We have studied the distribution of caveolin-3 in single skeletal muscle fibers from adult rat soleus by confocal immunofluorescence and by immunogold electron microscopy. We found that caveolin-3 occurs at the highest density on the plasma membrane but is also present in the core of the fibers, at the I-band/A-band interface where it is associated with the T-tubules. In neither domain of the muscle surface does caveolin-3 colocalize with the glucose transporter GLUT4 and there is no evidence for internalization of the caveolae in muscle.
KW - Animals
KW - Caveolin 3
KW - Caveolins
KW - Membrane Proteins
KW - Mice
KW - Muscle Fibers, Skeletal
KW - Muscle, Skeletal
KW - Rabbits
KW - Rats
KW - Rats, Wistar
U2 - 10.1006/excr.1998.4305
DO - 10.1006/excr.1998.4305
M3 - Journal article
C2 - 9925767
VL - 246
SP - 510
EP - 515
JO - Experimental Cell Research
JF - Experimental Cell Research
SN - 0014-4827
IS - 2
ER -
ID: 123665754