Detailed Instructions: In this task, you're given a paragraph from the research paper and your task is to generate a suitable title for the research paper based on the given paper. Under 100 words is a good title length.
Problem:A recombinant transmissible gastroenteritis coronavirus (rTGEV) in which E gene was deleted (rTGEV-E) has been engineered. This deletion mutant only grows in cells expressing E protein (E + cells) indicating that E was an essential gene for TGEV replication. Electron microscopy studies of rTGEV-E infected BHK-pAPN-E cells showed that only immature intracellular virions were assembled. These virions were non-infectious and not secreted to the extracellular medium in BHK-pAPN-E cells. RNA and protein composition analysis by RNase-gold and immunoelectron microscopy showed that rTGEV-E virions contained RNA and also all the structural TGEV proteins, except the deleted E protein. Nevertheless, full virion maturation was blocked. Studies of the rTGEV-E subcellular localization by confocal and immunoelectron microscopy in infected E cells showed that in the absence of E protein virus trafficking was arrested in the intermediate compartment. Therefore, the absence of E protein in TGEV resulted in two actions, a blockade of virus trafficking in the membranes of the secretory pathway, and prevention of full virus maturation.
Solution:
Absence of E protein arrests transmissible gastroenteritis coronavirus maturation in the secretory pathway