NDLI: The N-Terminal Region of the Human Autophagy Protein ATG16L1 Contains a Domain That Folds into a Helical Structure Consistent with Formation of a Coiled-Coil

Content Provider	PubMed Central
Author	Parkhouse, Rhiannon Ebong, Ima-obong Robinson, Carol V. Monie, Tom P.
Editor	Taylor, Paul
Copyright Year	2013
Abstract	Autophagy is a fundamental cellular process required for organelle degradation and removal of invasive pathogens. Autophagosome formation involves the recruitment of, and interaction between, multiple proteins produced from autophagy-related (ATG) genes. One of the key complexes in autophagosome formation is the ATG12-ATG5-ATG16L1 complex. ATG16L1 functions as a molecular scaffold mediating protein-protein interactions necessary for formation of the autophagosome in response to both classical and pathogen-related autophagy stimuli. The coiled-coil domain of the yeast ortholog, ATG16, exists as a homodimer both in solution and in the crystal form. The yeast and human orthologs show poor sequence identity. Here we have sought to determine the minimal boundaries of the human ATG16L1 coiled-coil domain and ascertain its oligomeric status in solution. Using a range of biochemical and biophysical techniques we show that the secondary structure of the human ATG16L1 coiled-coil has the expected helical composition and that the domain forms a homodimer in solution. We also observe extensive sequence conservation across vertebrates providing strong support for the crucial functional role of the ATG16L1 coiled-coil.
Related Links	http://dx.doi.org/10.1371/journal.pone.0076237
Starting Page	76237
File Format	PDF
ISSN	19326203
e-ISSN	19326203
Journal	PLoS ONE
Issue Number	9
Volume Number	8
Language	English
Publisher	Public Library of Science
Publisher Date	2013-09-01
Access Restriction	Open
Rights Holder	Public Library of Science
Subject Keyword	Biochemistry, Genetics and Molecular Biology(all) Agricultural and Biological Sciences(all) Medicine(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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