4ycz

Publication Abstract from PubMed

The nuclear pore complex (NPC) is the principal gateway for transport into and out of the nucleus. Selectivity is achieved through the hydrogel-like core of the NPC. The structural integrity of the NPC depends on ~15 architectural proteins, which are organized in distinct subcomplexes to form the >40-MDa ring-like structure. Here we present the 4.1-A crystal structure of a heterotetrameric core element ('hub') of the Y complex, the essential NPC building block, from Myceliophthora thermophila. Using the hub structure together with known Y-complex fragments, we built the entire ~0.5-MDa Y complex. Our data reveal that the conserved core of the Y complex has six rather than seven members. Evolutionarily distant Y-complex assemblies share a conserved core that is very similar in shape and dimension, thus suggesting that there are closely related architectural codes for constructing the NPC in all eukaryotes.

Atomic structure of the Y complex of the nuclear pore.,Kelley K, Knockenhauer KE, Kabachinski G, Schwartz TU Nat Struct Mol Biol. 2015 Mar 30. doi: 10.1038/nsmb.2998. PMID:25822992^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.