A nanobody suite for yeast scaffold nucleoporins provides details of the nuclear pore complex structure

Sarah A. Nordeen, Kasper R. Andersen, Kevin E. Knockenhauer, Jessica R. Ingram, Hidde L. Ploegh and Thomas U. Schwartz ()
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Sarah A. Nordeen: Massachusetts Institute of Technology
Kasper R. Andersen: Massachusetts Institute of Technology
Kevin E. Knockenhauer: Massachusetts Institute of Technology
Jessica R. Ingram: Boston Children’s Hospital and Harvard Medical School
Hidde L. Ploegh: Boston Children’s Hospital and Harvard Medical School
Thomas U. Schwartz: Massachusetts Institute of Technology

Nature Communications, 2020, vol. 11, issue 1, 1-13

Abstract: Abstract Nuclear pore complexes (NPCs) are the main conduits for molecular exchange across the nuclear envelope. The NPC is a modular assembly of ~500 individual proteins, called nucleoporins or nups. Most scaffolding nups are organized in two multimeric subcomplexes, the Nup84 or Y complex and the Nic96 or inner ring complex. Working in S. cerevisiae, and to study the assembly of these two essential subcomplexes, we here develop a set of twelve nanobodies that recognize seven constituent nucleoporins of the Y and Nic96 complexes. These nanobodies all bind specifically and with high affinity. We present structures of several nup-nanobody complexes, revealing their binding sites. Additionally, constitutive expression of the nanobody suite in S. cerevisiae detect accessible and obstructed surfaces of the Y complex and Nic96 within the NPC. Overall, this suite of nanobodies provides a unique and versatile toolkit for the study of the NPC.

Date: 2020
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DOI: 10.1038/s41467-020-19884-6

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