id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-293081-40pa5g89	Li, Jun	Preliminary crystallographic analysis of avian infectious bronchitis virus main protease	2006-12-16		.txt	text/plain	1510	95	61	IBV belongs to group III (Lai & Holmes, 2001) , which only infects avian species, and leads to a highly contagious disease affecting the respiratory, reproductive, neurological and renal systems of chickens, resulting in a drop in egg production in adult birds and damaging the developing reproductive system in young birds. To date, several crystal structures of coronavirus M pro s have been reported for group I and II coronaviruses, which mostly infect mammals (Anand et al., 2002 Yang et al., 2003) . The crystals belong to space group P6 1 22, with unit-cell parameters a = b = 119.1, c = 270.7 Å , = = 90, = 120 (see Table 1 Typical crystals of IBV M pro grown by the hanging-drop method in 2.5% PEG 4000, 12% 2-propanol, 0.1 M sodium cacodylate pH 6.5.	./cache/cord-293081-40pa5g89.txt	./txt/cord-293081-40pa5g89.txt