5C2U

Ferredoxin-like domain of nucleoporin Nup54 bound to a nanobody


Domain Annotation: SCOP Classification SCOP Database (version: 2.0) Homepage

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpecies
Ad5c2ub_ All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin automated matches automated matches (Camelus dromedarius ) [TaxId: 9838 ]
ChainDomainClassArchitectureTopologyHomology
A2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like Immunoglobulins

Protein Family Annotation Pfam Database Homepage

ChainsAccessionIdentifierDescriptionCommentsSource
BPF18437Nup54 C-terminal interacting domain (Nup54_C)Nup54 C-terminal interacting domainThe mammalian nuclear pore complex (NPC) conducts nucleocytoplasmic transport and contains multiple copies of nucleoporins (nups). This is the C-terminal interacting domain found on Nup54. Nup45 is a splice variant of Nup58 with an identical alpha-he ...The mammalian nuclear pore complex (NPC) conducts nucleocytoplasmic transport and contains multiple copies of nucleoporins (nups). This is the C-terminal interacting domain found on Nup54. Nup45 is a splice variant of Nup58 with an identical alpha-helical region. Nup54 along with Nup62 and Nup58 are essential for nuclear transport. The C-terminal part of the alpha-helical region of Nup54 interacts with a C-terminal part of the alpha-helical region of Nup58. Interestingly, this region appears in two distinct conformations: a single helix and a helix-loop-helix, termed 'straight' and 'bent'. Whereas the straight conformer consists of a 34 residues long alpha helix (residues 460-493), the bent conformer is composed of two alpha helices, each 13 residues long, connected by a central loop (N helix, residues 460-472; C helix, residues 477-489) [1].
Domain
BPF13874Nucleoporin complex subunit 54 (Nup54)Nucleoporin complex subunit 54This is the human Nup54 subunit of the nucleoporin complex, equivalent to Nup57 of yeast. Nup54, Nup58 and Nup62 all have similar affinities for importin-beta. It seems likely that they are the only FG-repeat nucleoporins of the central channel, and ...This is the human Nup54 subunit of the nucleoporin complex, equivalent to Nup57 of yeast. Nup54, Nup58 and Nup62 all have similar affinities for importin-beta. It seems likely that they are the only FG-repeat nucleoporins of the central channel, and as such they would form a zone of equal affinity spanning the central channel. The diffusion of importin-beta import complexes through the central channel may be a stochastic process as the affinities are similar, whereas movement from cytoplasmic fibrils to the central channel and from the central channel to the nuclear basket would be facilitated by the subtle differences in affinity between them [1,2].
Domain