BioEssaysVolume 40, Issue 4 1870041 Cover PictureFree Access BioEssays 4∕2018 First published: 30 March 2018 https://doi.org/10.1002/bies.201870041AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Graphical Abstract In article number 1700213, Popp et al. discuss the impact of technological advances in structural biology on uncovering the architectures of previously intractable protein systems, with a focus on biological filaments. The cover shows two examples of recent filament structures determined by cryoEM. The 3.6 Å double-stranded right-handed actin helical structure (shades of green) is shown juxtaposed with the 4.3 Å double-stranded left-handed helical ParM structure (pink and claret) (pdb accession numbers 5JLF (Actin) and 5AEY (ParM)). Volume40, Issue4April 20181870041 RelatedInformation