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The ETO protein disrupted in t(8;21)-associated acute myeloid leukemia is a corepressor for the promyelocytic leukemia zinc finger protein 总被引:11,自引:0,他引:11
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Melnick AM Westendorf JJ Polinger A Carlile GW Arai S Ball HJ Lutterbach B Hiebert SW Licht JD 《Molecular and cellular biology》2000,20(6):2075-2086
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ETO, a target of t(8;21) in acute leukemia, makes distinct contacts with multiple histone deacetylases and binds mSin3A through its oligomerization domain 总被引:14,自引:0,他引:14
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Amann JM Nip J Strom DK Lutterbach B Harada H Lenny N Downing JR Meyers S Hiebert SW 《Molecular and cellular biology》2001,21(19):6470-6483
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Chen B Gui J 《Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology》2004,138(3):285-293
Potential roles of C1q/tumor necrosis factor (TNF) superfamily proteins have been observed in vertebrate oogenesis and oocyte maturation, but no ovary-specific member has been identified so far. In this study, we have cloned and identified a novel member of C1q family with a C1q domain in the C-terminal from fully grown oocyte cDNA library of color crucian carp and demonstrated that the gene might be specifically expressed in ovary and therefore designated as Carassius auratus ovary-specific C1q-like factor, CaOC1q-like factor. It encodes a 213 amino acid protein with a 17 amino acid signal peptide. There is only one protein band of about 24.5 kDa in the extracts from phase I to phase IV oocytes, but two positive protein bands are detected in the extracts of mature eggs and fertilized eggs. Furthermore, the mobility shift of the smaller target protein band cannot be eliminated by phosphatase treatment, but the larger protein band increases its mobility on the gel after phosphatase treatment, suggesting that the larger protein might be a phosphorylated form. Immunofluorescence localization indicates that the CaOC1q-like proteins localize in cytoplasm, cytoplasm membrane and egg envelope of the oocytes at cortical granule stage and vitellogenesis stage, whereas they were compressed to cytoplasm margin in ovulated mature eggs and discharged into perivitelline space between cytoplasm membrane and egg envelope after egg fertilization. Further studies on distribution and translocation mechanism of the CaOC1q-like factor will be benefit to elucidate the unique function in oogenesis, oocyte maturation and egg fertilization. 相似文献
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ETO, a Target of t(8;21) in Acute Leukemia, Interacts with the N-CoR and mSin3 Corepressors 总被引:29,自引:7,他引:22
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Bart Lutterbach Jennifer J. Westendorf Bryan Linggi Andrea Patten Mariko Moniwa James R. Davie Khanh D. Huynh Vivian J. Bardwell Robert M. Lavinsky Michael G. Rosenfeld Christopher Glass Edward Seto Scott W. Hiebert 《Molecular and cellular biology》1998,18(12):7176-7184
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A novel translocation,t(9;21)(q13;q22) rearranging the RUNX1 gene in acute myelomonocytic leukemia 总被引:1,自引:0,他引:1
A novel translocation t(9;21)(q13;q22) associated with trisomy 4 has been detected in a patient with acute myelomonocytic leukemia (AML,M4) in relapse. The chromosomal translocation results in rearrangement of the RUNX1 gene at 21q22. The DNA sequence rearranged on chromosome 9 remains unidentified. The diversity of the partners involved in translocations implicating RUNX1 suggests that the functional consequences of the abnormality are more due to the truncation of RUNX1 than to the identity of its partner in the rearrangement. 相似文献
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Envoplakin, a member of the plakin family of proteins, is a component of desmosomes and the epidermal cornified envelope. To understand how envoplakin expression is regulated, we have analyzed the structure of the mouse envoplakin gene and characterized the promoters of both the human and mouse genes. The mouse gene consists of 22 exons and maps to chromosome 11E1, syntenic to the location of the human gene on 17q25. The exon-intron structure of the mouse envoplakin gene is common to all members of the plakin family: the N-terminal protein domain is encoded by 21 small exons, and the central rod domain and the C-terminal globular domain are coded by a single large exon. The C terminus shows the highest sequence conservation between mouse and human envoplakins and between envoplakin and the other family members. The N terminus is also conserved, with sequence homology extending to Drosophila Kakapo. A region between nucleotides -101 and 288 was necessary for promoter activity in transiently transfected primary keratinocytes. This region is highly conserved between the human and mouse genes and contains at least two different positively acting elements identified by site-directed mutagenesis and electrophoretic mobility shift assays. Mutation of a GC box binding Sp1 and Sp3 proteins or a combined E box and Krüppel-like element interacting with unidentified nuclear proteins virtually abolished promoter activity. 600 base pairs of the mouse upstream sequence was sufficient to drive expression of a beta-galactosidase reporter gene in the suprabasal layers of epidermis, esophagus, and forestomach of transgenic mice. Thus, we have identified a regulatory region in the envoplakin gene that can account for the expression pattern of the endogenous protein in stratified squamous epithelia. 相似文献