Raver1 is an integral component of muscle contractile elements

Raver1 is an integral component of muscle contractile elements
复制标题

Raver1是肌肉收缩元件的组成部分

DOI:
10.1007/s00441-006-0322-1
复制
发表时间:
2007
影响因子:
3.6
通讯作者:
Illenberger S
Illenberger S
中科院分区:
生物学3区
文献类型:
--
作者:
Zieseniss A;Schroeder U;Buchmeier S;Schoenenberger CA;van den Heuvel J;Jockusch BM;Illenberger S

文献摘要

参考文献

被引文献

相似文献

Raver1 是一种普遍表达的蛋白质,最初被鉴定为metavinculin(微丝相关蛋白vinculin 的肌肉特异性亚型)的配体。该蛋白质主要存在于细胞核中,在细胞核内共定位并可能与参与选择性剪接过程的多聚嘧啶束结合蛋白相互作用。在骨骼肌分化过程中,raver1 易位到细胞质并最终靶向肌节的 Z 线。在这里,它与 Metavinculin、vinculin 和 α-actinin 共定位,所有这些都已在生化上被鉴定为 raver1 配体。为了获得有关 raver1 在肌肉结构和功能中潜在作用的更多信息,我们通过使用三种识别 raver1 蛋白不同区域表位的单克隆抗体,研究了它在小鼠横纹肌和平滑肌中的分布和精细定位。我们的免疫荧光和免疫电镜结果表明,raver1的细胞质积累不仅限于骨骼肌,还发生在心脏和平滑肌中。与纽蛋白和美纽蛋白不同,细胞质 raver1 不仅限于肋节,而且还代表肌节的组成部分。在分离的肌原纤维和骨骼肌的超薄切片中,发现 raver1 集中在 I-Z-I 带上。一小部分 raver1 存在于所有三种类型肌肉的细胞核中。这些数据表明,在肌肉分化过程中,raver1可能将基因表达与肌肉收缩机制的结构功能联系起来。
Raver1, a ubiquitously expressed protein, was originally identified as a ligand for metavinculin, the muscle-specific isoform of the microfilament-associated protein vinculin. The protein resides primarily in the nucleus, where it colocalises and may interact with polypyrimidine-tract-binding protein, which is involved in alternative splicing processes. During skeletal muscle differentiation, raver1 translocates to the cytoplasm and eventually targets the Z-line of sarcomeres. Here, it colocalises with metavinculin, vinculin and alpha-actinin, all of which have biochemically been identified as raver1 ligands. To obtain more information about the potential role of raver1 in muscle structure and function, we have investigated its distribution and fine localisation in mouse striated and smooth muscle, by using three monoclonal antibodies that recognise epitopes in different regions of the raver1 protein. Our immunofluorescence and immunoelectron-microscopic results indicate that the cytoplasmic accumulation of raver1 is not confined to skeletal muscle but also occurs in heart and smooth muscle. Unlike vinculin and metavinculin, cytoplasmic raver1 is not restricted to costameres but additionally represents an integral part of the sarcomere. In isolated myofibrils and in ultrathin sections of skeletal muscle, raver1 has been found concentrated at the I-Z-I band. A minor fraction of raver1 is present in the nuclei of all three types of muscle. These data indicate that, during muscle differentiation, raver1 might link gene expression with structural functions of the contractile machinery of muscle.
比较生化分析表明纽蛋白和美达纽蛋白在肌肉粘附部位协同作用*
DOI: --
发表时间: 2004
影响因子: 4.8
作者:
S. Witt;A. Zieseniss;U. Fock;B. Jockusch;S. Illenberger
通讯作者: S. Illenberger
DOI: --
发表时间: 1994
影响因子: 4
作者:
E. Morris;A. Fulton
通讯作者: A. Fulton
DOI: 10.1152/nips.01413.2002
发表时间: 2003-02-01
期刊: NEWS IN PHYSIOLOGICAL SCIENCES
影响因子: --
作者:
Jockusch, BM;Hüttelmaier, S;Illenberger, S
通讯作者: Illenberger, S
几种肌原纤维蛋白周转率的比较和双同位素法的严格评价。
DOI: 10.1016/s0021-9258(17)40409-1
发表时间: 1977
期刊: The Journal of biological chemistry
影响因子: --
作者:
R. Zak;A. Martin;G. Prior;M. Rabinowitz
通讯作者: M. Rabinowitz
DOI: 10.1083/jcb.153.2.413
发表时间: 2001-04-16
期刊: The Journal of cell biology
影响因子: --
作者:
Bang ML;Mudry RE;McElhinny AS;Trombitás K;Geach AJ;Yamasaki R;Sorimachi H;Granzier H;Gregorio CC;Labeit S
通讯作者: Labeit S