周质空间

由于RGD水蛭素嵌合基因上游连接了金黄色葡萄球菌蛋白A（SPA）的信号肽序列，在IPTG诱导下两种嵌合分子都获得了分泌表达，表达产物主要集中在细胞周质空间。

Coli strain BL21 ( DE3 ), and gene expression was induced by IPTG . The target proteins were directed into the periplasmic space by the staphylococcal protein A ( SPA ) signal sequence preceding the RGD hirudin gene .

在稻成熟花粉粒中，精细胞被不连续的电子透明的周质空间所包围。

Sperm cell was surrounded by discontinuous periplasmic space in rice mature pollen grain .

研究发现，重组的碱性蛋白酶在进入大肠杆菌周质空间时可能存在前肽自动脱落的现象。

The study also discovered that while the recombinant alkaline protease was secreted into the periplasmic space of E.

重组蛋白分泌到周质空间或胞外培养基中较之在胞内以包含体形式表达有许多优势。

The secretion of recombinant protein to periplasm or extracellular medium has more advantages than the expression intracellular as inclusion bodies .