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Bosch-Comas A Lindsten K Gonzàlez-Duarte R Masucci MG Marfany G 《Cellular and molecular life sciences : CMLS》2006,63(6):723-734
The biological functions of the more than one hundred genes coding for deubiquitinating enzymes in the human genome remain
mostly unknown. The USP25 gene, located at 21q11.2, encodes three protein isoforms produced by alternative splicing. While
two of the isoforms are expressed nearly ubiquituously, the expression of the longer USP25 isoform (USP25m) is restricted
to muscular tissues and is upregulated during myogenesis. USP25m interacts with three sarcomeric proteins: actin alpha-1 (ACTA1),
filamin C (FLNC), and myosin binding protein C1 (MyBPC1), which are critically involved in muscle differentiation and maintenance,
and have been implicated in the pathogenesis of severe myopathies. Biochemical analyses demonstrated that MyBPC1 is a short-lived
proteasomal substrate, and its degradation is prevented by over-expression of USP25m but not by other USP25 isoforms. In contrast,
ACTA1 and FLNC appear to be stable proteins, indicating that their interaction with USP25m is not related to their turnover
rate.
Received 7 November 2005; received after revision 7 January 2006; accepted 13 January 2006 相似文献
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面对国际知识产权执法标准不断提高的趋势,对国际知识产权执法制度的发展过程进行了具体描绘。认为国际知识产权执法高标准的趋势将不可避免,但仍会留有例外条款等弹性空间。中国应提高自主创新能力,并同时对国际知识产权制度变化对我国企业可能产生的影响进行分析,为参与谈判建立数据基础。 相似文献
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