id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-329227-sqetz7h6	Hou, Yixuan	Deletion of both the Tyrosine-Based Endocytosis Signal and the Endoplasmic Reticulum Retrieval Signal in the Cytoplasmic Tail of Spike Protein Attenuates Porcine Epidemic Diarrhea Virus in Pigs	2018-11-07		.txt	text/plain	8021	407	55	The amounts of PEDV S proteins in the ERGIC, in other organelles, or on the cell surface are likely regulated by two nearby motifs in its cytoplasmic tail (CT): a tyrosine-based motif, Yxx⌽ (x is any residue and ⌽ is a bulky hydrophobic residue: F, M, I, L, or V), and an ER retrieval signal (ERRS), KVHVQ (10) (11) (12) (13) , as well as other viral and cellular proteins. One study demonstrated that a single amino acid substitution in this motif (KVHVQ to KVRVQ) weakens the intracellular retention function of the S proteins of the 10th passage of a murine-adapted PEDV variant, MK-P10 (18) , resulting in enhanced syncytium formation in Vero cells. In this study, we evaluated the phenotypes of transiently expressed S mutants containing mutations or deletions in these two motifs in mammalian cells and the virulence of three representative recombinant PEDVs in gnotobiotic piglets.	./cache/cord-329227-sqetz7h6.txt	./txt/cord-329227-sqetz7h6.txt