Yan Hailiang, Guan Xiaoting, Wang Luning, Tan Jiping, Wang Guihong, An Yuan, Zhang Yan
State Key Laboratory of Biomembrane and Membrane Biotechnology, College of Life Sciences, Peking University Beijing, 100871, China.
Int J Clin Exp Med. 2013 Apr 12;6(4):289-93. Print 2013.
Myoclonus dystonia syndrome is a rare movement disorder featured by myoclonic jerks and dystonia. We identified here a point mutation in ε-sarcoglycan gene exon 6 associating with inherited myoclonus dystonia syndrome in a Chinese Han family. The mutation identified induces a stop codon and terminates the transcription of ε-sarcoglycan mRNA. This in turn results in a large truncation of ε-sarcoglycan protein. The further investigation is required to understand physiological and pathological functions of ε-sarcoglycan.
肌阵挛性肌张力障碍综合征是一种罕见的运动障碍,其特征为肌阵挛性抽搐和肌张力障碍。我们在此鉴定出一个中国汉族家系中与遗传性肌阵挛性肌张力障碍综合征相关的ε-肌聚糖基因第6外显子的点突变。所鉴定出的突变导致一个终止密码子,从而终止了ε-肌聚糖信使核糖核酸的转录。这进而导致ε-肌聚糖蛋白的大量截短。需要进一步研究以了解ε-肌聚糖的生理和病理功能。