期刊
MOLECULAR BIOLOGY REPORTS
卷 37, 期 3, 页码 1165-1168出版社
SPRINGER
DOI: 10.1007/s11033-009-9477-7
关键词
Intracellular localization; GFP fusion protein; Nubp
资金
- twentyfirst Century COE Program
- Ministry of Education, Culture, Sports, Science and Technology of Japan
Nubp1 (also known as Nbp35) and Nubp2 (also known as Cfd1) proteins are known to be responsible for regulating centrosome duplication in mouse and ribosome biogenesis in yeast. Nubp proteins contribute to diverse physiological functions. It is thought that Nubp1 and Nubp2 proteins interact with each other and regulate their functions. However, little is known about the intracellular localization of Nubp proteins. In this study, we compared the intracellular localization of human Nubp1 and Nubp2 by fusing these proteins with green fluorescent protein (GFP) in HeLa cells. The nuclear transfer of Nubp1-GFP, where GFP was fused to the C-terminus, was not observed. However, GFP-Nubp1, where GFP was fused to the N-terminus, did accumulate in the nucleus. In addition, GFP-modification at the N-terminal of Nubp2 induced nuclear transformation. Our data suggest that the C-terminal region of Nubp1 is important for nuclear transfer and the N-terminal of Nubp2 contributes to the morphology of the nucleus.
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