Abstract:
:We describe an engineered family of highly antigenic molecules based on GFP-like fluorescent proteins. These molecules contain numerous copies of peptide epitopes and simultaneously bind IgG antibodies at each location. These 'spaghetti monster' fluorescent proteins (smFPs) distributed well in neurons, notably into small dendrites, spines and axons. smFP immunolabeling localized weakly expressed proteins not well resolved with traditional epitope tags. By varying epitope and scaffold, we generated a diverse family of mutually orthogonal antigens. In cultured neurons and mouse and fly brains, smFP probes allowed robust, orthogonal multicolor visualization of proteins, cell populations and neuropil. smFP variants complement existing tracers and greatly increase the number of simultaneous imaging channels, and they performed well in advanced preparations such as array tomography, super-resolution fluorescence imaging and electron microscopy. In living cells, the probes improved single-molecule image tracking and increased yield for RNA-seq. These probes facilitate new experiments in connectomics, transcriptomics and protein localization.
journal_name
Nat Methodsjournal_title
Nature methodsauthors
Viswanathan S,Williams ME,Bloss EB,Stasevich TJ,Speer CM,Nern A,Pfeiffer BD,Hooks BM,Li WP,English BP,Tian T,Henry GL,Macklin JJ,Patel R,Gerfen CR,Zhuang X,Wang Y,Rubin GM,Looger LLdoi
10.1038/nmeth.3365subject
Has Abstractpub_date
2015-06-01 00:00:00pages
568-76issue
6eissn
1548-7091issn
1548-7105pii
nmeth.3365journal_volume
12pub_type
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