Overexpression of Nd1-s, a variant form of new kelch family protein, perturbs the cell cycle progression of fibroblasts |
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Authors: | Inoue Atsushi Kang Myengmo Fujimura Lisa Takamori Yasuyuki Sasagawa Kazushi Itoh Haruo Tokuhisa Takeshi Hatano Masahiko |
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Institution: | Department of Developmental Genetics (H2), Graduate School of Medicine, Chiba University, Chiba, Japan. |
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Abstract: | The murine Nd1 gene encodes two forms of protein, Nd1-L and Nd1-S, both of which share the BTB/POZ domain, but Nd1-S lacks the kelch repeats. Although Nd1-L ubiquitously expresses, localizes in the cytoplasm and functions as a stabilizer of actin filaments, expression and function of Nd1-S were unknown. Here we show that Nd1-S were expressed in all tissues examined and localized in the nucleus as a speckled-like pattern. Furthermore, overexpression of Nd1-S perturbed cell growth of NIH3T3 cells at the G1/S phase of the cell cycle. These results suggest that Nd1-S may play a role in cell cycle progression in the nucleus. |
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