一篇free一周，大家抓紧看Ubiquitylation of p62/sequestosome1 activates its autophagy receptor function and controls selective autophagy upon ubiquitin stress http://www.nature.com/cr/journal/vaop/ncurrent/full/cr201740a.html；Structure and mechanism of a group-I cobalt energy coupling factor transporter http://www.nature.com/cr/journal/vaop/ncurrent/abs/cr201738a.html