Crystal Structure of the Nuclear Export Receptor CRM1 in Complex with Snurportin1 and RanGTP
2009 | journal article; research paper. A publication with affiliation to the University of Göttingen.
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Monecke, Thomas, Thomas Guettler, Piotr Neumann, Achim Dickmanns, Dirk Goerlich, and Ralf Ficner. "Crystal Structure of the Nuclear Export Receptor CRM1 in Complex with Snurportin1 and RanGTP." Science 324, no. 5930 (2009): 1087-1091. https://doi.org/10.1126/science.1173388.
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- Authors
- Monecke, Thomas ; Guettler, Thomas; Neumann, Piotr ; Dickmanns, Achim ; Goerlich, Dirk; Ficner, Ralf
- Abstract
- CRM1 mediates nuclear export of numerous unrelated cargoes, which may carry a short leucine-rich nuclear export signal or export signatures that include folded domains. How CRM1 recognizes such a variety of cargoes has been unknown up to this point. Here we present the crystal structure of the SPN1.CRM1.RanGTP export complex at 2.5 angstrom resolution (where SPN1 is snurportin1 and RanGTP is guanosine 5' triphosphate-bound Ran). SPN1 is a nuclear import adapter for cytoplasmically assembled, m(3)G-capped spliceosomal U snRNPs (small nuclear ribonucleoproteins). The structure shows how CRM1 can specifically return the cargo-free form of SPN1 to the cytoplasm. The extensive contact area includes five hydrophobic residues at the SPN1 amino terminus that dock into a hydrophobic cleft of CRM1, as well as numerous hydrophilic contacts of CRM1 to m3G cap-binding domain and carboxyl-terminal residues of SPN1. The structure suggests that RanGTP promotes cargo-binding to CRM1 solely through long-range conformational changes in the exportin.
- Issue Date
- 2009
- Publisher
- Amer Assoc Advancement Science
- Journal
- Science
- ISSN
- 0036-8075