首页> 外文期刊>Journal of Experimental Botany >Peripheral membrane proteins mediate binding of vacuolar storage proteins to membranes of the secretory pathway of developing pea cotyledons
【24h】

Peripheral membrane proteins mediate binding of vacuolar storage proteins to membranes of the secretory pathway of developing pea cotyledons

机译:外周膜蛋白介导液泡贮藏蛋白与豌豆子叶发育途径分泌膜的结合

获取原文
获取原文并翻译 | 示例
           

摘要

In developing pea cotyledons, storage proteins are sorted via dense vesicles into the protein storage vacuole. Formation of these unique transport vesicles is characterized by aggregation of their cargo proteins. Protein sorting into dense vesicles is pH dependent. In order to gain insight into the molecular basis of storage protein sorting, a membrane binding assay was developed which allows for a detailed biochemical analysis of binding events. Employing this assay it was possible to show that storage proteins bind in a pH-dependent manner to the membranes of the secretory pathway with a pH optimum in the range of the lumenal pH of the Golgi cisternae. Through reconstitution experiments, it was possible to demonstrate further that this recruitment occurs via the interaction of peripheral rather than intrinsic membrane proteins. Results of co-immunoprecipitation experiments point to interactions between different storage proteins in the secretory system. These results are discussed in terms of the aggregation-mediated sorting of storage proteins into maturing dense vesicles.
机译:在发育中的豌豆子叶中,贮藏蛋白通过密集的囊泡被分类到蛋白质贮藏液泡中。这些独特的运输小泡的形成以其货物蛋白的聚集为特征。蛋白质分类成致密的囊泡是pH依赖性的。为了深入了解存储蛋白分选的分子基础,开发了一种膜结合测定法,可以对结合事件进行详细的生化分析。利用该测定法,有可能显示出贮藏蛋白以pH依赖的方式结合至分泌途径的膜,且其pH在高尔基池的管腔pH范围内最佳。通过重建实验,有可能进一步证明这种募集是通过外周而非内在膜蛋白的相互作用发生的。免疫共沉淀实验的结果指出了分泌系统中不同存储蛋白之间的相互作用。这些结果是根据聚集介导的存储蛋白到成熟的密集囊泡中的分类进行讨论的。

著录项

  • 来源
    《Journal of Experimental Botany》 |2008年第6期|p.1327-1340|共14页
  • 作者单位

    1Strukturelle Zellphysiologie, Albrecht-von-Haller-Institut für Pflanzenwissenschaften, Georg-August Universität Göttingen, Untere Karspüle 2, 37073 Göttingen, Germany 2Biochemie der Pflanze, Albrecht-von-Haller-Institut für Pflanzenwissenschaften, Georg-August-Universität Göttingen, Justus-von-Liebig Weg 11, 37077 Göttingen, Germany 3Zellbiologie, Heidelberger Institut für Pflanzenwissenschaften, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 230, 69120 Heidelberg, Germany;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号