The Storage Proteins of Rice and Oat
The Storage Proteins of Rice and Oat
复制标题
大米和燕麦的储存蛋白质
DOI：
--
复制
发表时间：
1997
期刊：
影响因子：
--
通讯作者：
T. Okita
中科院分区：
文献类型：
--
作者：
D. Muench;T. Okita
水稻和燕麦在栽培植物中是独特的，因为它们的种子储备组织含有大量的球蛋白和醇溶谷蛋白，这两类储存蛋白存在于植物中。与其他谷物积累醇溶蛋白作为其主要氮储备不同，水稻和燕麦中的主要储存蛋白分别是谷蛋白和12S球蛋白。这些蛋白质在一级序列水平上与豆科US球蛋白高度同源。蛋白质结构的这种相似性延伸到分子水平，涉及编码这些蛋白质的多基因家族的组织和复杂性，以及导致这些蛋白质合成、运输、包装和组装成蛋白质体的生物化学和细胞事件。相比之下，水稻和燕麦醇溶谷蛋白共享很少的序列同源性，只有一些细胞的事件，导致其沉积到蛋白体。稻米将醇溶谷蛋白和谷蛋白包装在单独的蛋白质体中，这一过程可能是通过将其mRNA主动分选到内质网的特定结构域来启动的，而燕麦的燕麦蛋白和球蛋白沉积在同一蛋白质包涵体中，尽管是作为单独的蛋白质聚集体。水稻和燕麦贮藏蛋白的表达在转录和转录后水平受到调控。这在燕麦中是明显的，其中球蛋白mRNA的翻译速率比燕麦蛋白mRNA高得多。本文综述了水稻和燕麦贮藏蛋白基因的组织和表达、编码蛋白组装和沉积成蛋白体的细胞途径以及近年来为改变这些谷物的蛋白质品质所做的遗传努力。
Rice and oat are unique among the cultivated plants in that their seed reserve tissues contain significant amounts of globulins and prolamins, the two classes of storage proteins that are present in plants. Unlike other cereals which accumulate prolamins as their primary nitrogen reserve, the major class of storage proteins in rice and oat are the glutelins and 12S globulins, respectively. These proteins are highly homologous at the primary sequence level to the leguminous US globulins. This similarity in protein structure extends to the molecular level with regard to the organization and complexity of the multigene families that code for these proteins, and the biochemical and cellular events that lead to the synthesis, transport, packaging and assembly of these proteins into protein bodies. In contrast, the rice and oat prolamins share little sequence homology and only some of the cellular events that lead to their deposition into protein bodies. Rice packages prolamin and glutelin in separate protein bodies, a process that may be initiated by the active sorting of their mRNAs to specific domains of the endoplasmic reticulum, whereas the avenins and globulins of oat are deposited within the same protein inclusion body, although as separate protein aggregates. The expression of the rice and oat storage proteins is regulated at the transcriptional and post-transcriptional levels. This is conspicuously evident in oat where globulin mRNAs are translated at a much higher rate than avenin mRNAs. In this review, we discuss the latest developments on the organization and expresssion of the rice and oat storage protein genes and the cellular pathways that result in the assembly and deposition of coded proteins into protein bodies, as well as recent genetic efforts to modify the protein quality of these cereals.
影响因子：
11.6
作者：
SCHMIDT, RJ;KETUDAT, M;HOSCHEK, G
通讯作者：
HOSCHEK, G
微管介导果蝇卵子发生过程中 bicoid RNA 的定位。
DOI：
10.1242/dev.113.1.55
发表时间：
1991
期刊：
Development (Cambridge, England)
影响因子：
--
作者：
Pokrywka,NJ;Stephenson,EC
通讯作者：
Stephenson,EC