大肠杆菌中外源蛋白可定位于胞内、周质或胞外培养基中。
Heterologous proteins could be expressed directly in the cytoplasm, secreted into the periplasmic space or extracellular medium.
他们通过许多信号途径将胞外刺激转导或是转化成胞内信号，包括神经递质，光，激素，脂质和蛋白质。
They transduce or convert extracellular stimuli into intracellular signals through a number of signaling pathways, including neurotransmitters, light, hormones, lipids, and proteins.
由于大量反应是由反应中心位于外周胞质空间的膜结合脱氢酶催化的，所以反应底物不需要转运入细胞内。
As most reactions are catalyzed by the membrane-bound dehydrogenases whose reaction centers locate in the peripheral cytoplasm space, transfer of the substrates into the cell is unnecessary.
由于大量反应是由反应中心位于外周胞质空间的膜结合脱氢酶催化的，所以反应底物不需要转运入细胞内。
As most reactions are catalyzed by the membrane-bound dehydrogenases whose reaction centers locate in the peripheral cytoplasm space, transfer of the substrates into the cell is unnecessary.
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