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KCTD10 interacts with proliferating cell nuclear antigen and its down-regulation could inhibit cell proliferation
Yibo Wang1, Yi Zheng, Fang Luo
1Key Laboratory for Clinical Cardiovascular Genetics, Ministry of Education, China & Sino-German Laboratory for Molecular Medicine, FuWai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
Abstract:
A novel gene (GenBank accession No. AF113208) named KCTD10 (potassium channel tetramerisation domain-containing 10) was cloned from our 5300 EST database of human aorta cDNA library. Computational analysis showed that KCTD10 cDNA is 2,638 bp long, encoding 313 amino acids with a proliferating cell nuclear antigen binding motif, mapped to chromosome 12q24.11 with 7 exons, ubiquitously expressed in all 12 tested normal tissues and 7 of 8 tested tumor cell lines from MTN membranes by Northern blot. Nuclear localization of KCTD10 was observed in A549 cells. Yeast two-hybrid analysis and immunoprecipitation assay showed that KCTD10 can interact with PCNA. In A549 cells, KCTD10 down-regulation could inhibit cell proliferation, but its over-expression could not influence cell proliferation. The results suggest that KCTD10 may be associated with DNA synthesis and cell proliferation.
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