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Structural determinants of nuclear export signal orientation in binding to exportin CRM1

Journal Article · · eLife
DOI:https://doi.org/10.7554/eLife.10034· OSTI ID:1223794
The Chromosome Region of Maintenance 1 (CRM1) protein mediates nuclear export of hundreds of proteins through recognition of their nuclear export signals (NESs), which are highly variable in sequence and structure. The plasticity of the CRM1-NES interaction is not well understood, as there are many NES sequences that seem incompatible with structures of the NES-bound CRM1 groove. Crystal structures of CRM1 bound to two different NESs with unusual sequences showed the NES peptides binding the CRM1 groove in the opposite orientation (minus) to that of previously studied NESs (plus). A comparison of minus and plus NESs identified structural and sequence determinants for NES orientation. The binding of NESs to CRM1 in both orientations results in a large expansion in NES consensus patterns and therefore a corresponding expansion of potential NESs in the proteome.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1223794
Alternate ID(s):
OSTI ID: 1856372
Journal Information:
eLife, Journal Name: eLife Vol. 4; ISSN 2050-084X
Publisher:
eLife Sciences Publications, Ltd.Copyright Statement
Country of Publication:
United States
Language:
English

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Active nuclear import and passive nuclear export are the primary determinants of TDP-43 localization journal May 2018
Structural prerequisites for CRM1-dependent nuclear export signaling peptides: accessibility, adapting conformation, and the stability at the binding site journal April 2019
Nuclear export of ubiquitinated proteins via the UBIN-POST system journal April 2018
Xpo7 is a broad-spectrum exportin and a nuclear import receptor journal May 2018
Structural basis for the nuclear import and export functions of the biportin Pdr6/Kap122 journal April 2019
Proteome-level assessment of origin, prevalence and function of leucine-aspartic acid (LD) motifs journal October 2019
Exportin Crm1 is repurposed as a docking protein to generate microtubule organizing centers at the nuclear pore posted_content November 2017
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