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Journal of Histochemistry and Cytochemistry, Vol. 51, 513-522, April 2003, Copyright © 2003, The Histochemical Society, Inc.
Expression of the LIM Proteins Paxillin and Hic-5 in Human Tissues
Tsutomu Yuminamochia,
Yutaka Yatomib,
Makoto Osadaa,
Tsukasa Ohmorib,
Yoshio Ishiia,
Kumiko Nakazawaa,
Shigemi Hosogayaa, and
Yukio Ozakib
a Department of Clinical Laboratory, Yamanashi Medical University, Japan
b Department of Laboratory Medicine, Yamanashi Medical University, Japan
Correspondence to:
Yutaka Yatomi, Dept. of Laboratory Medicine, Yamanashi Medical University, Nakakoma, Yamanashi 409-3898, Japan. E-mail: yatomiy@res.yamanashi-med.ac.jp
The LIM domain is a proteinprotein interaction motif critically involved in a variety of fundamental biological processes, including cytoskeletal organization, cell lineage specification, and organ development. In this study we examined the expression of the LIM proteins paxillin and Hic-5 in adult human tissues by immunohistochemistry and immunoblotting. Paxillin expression was widespread and observed both in non-muscle and muscle tissues. Of the latter, paxillin was mainly expressed in multinuclear striated muscle. In contrast, Hic-5 showed restricted expression and was expressed in muscle tissues, mainly in mononuclear smooth muscle. Taken together with previous findings, it appears likely that the counterbalance between paxillin and Hic-5 may be deeply involved in muscle differentiation. (J Histochem Cytochem 51:513521, 2003)
Key Words:
paxillin, Hic-5, LIM protein, focal adhesion, cytoskeletal reorganization, striated muscle, smooth muscle, human

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The Journal of Histochemistry & Cytochemistry
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