Midasin - Q9NU22 (MDN1_HUMAN)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

 
Function
Nuclear chaperone required for maturation and nuclear export of pre-60S ribosome subunits (PubMed:27814492). Functions at successive maturation steps to remove ribosomal factors at critical transition points, first driving the exit of early pre-60S particles from the nucleolus and then driving late pre-60S particles from the nucleus (By similarity). At an early stage in 60S maturation, mediates the dissociation of the PeBoW complex (PES1-BOP1-WDR12) from early pre-60S particles, rendering them competent for export from the nucleolus to the nucleoplasm (By similarity). Subsequently recruited to the nucleoplasmic particles through interaction with SUMO-conjugated PELP1 complex (PubMed:27814492). This binding is only possible if the 5S RNP at the central protuberance has undergone the rotation to complete its maturation (By similarity). UniProt
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Subunit Structure
Associates with pre-60S ribosomes in the nucleoplasm. Interacts (via its hexameric AAA ATPase ring) with the PELP1 complex (via PELP1); the interaction is regulated by SUMO conjugation of PELP1 and is crucial for recruitment of MDN1 to the pre-ribosomal particle (PubMed:27814492). Interacts (via VWFA/MIDAS domain) with WDR12 (via UBL domain) (PubMed:26601951). Interacts (via VWFA/MIDAS domain) with NLE1 (via UBL domain) (PubMed:26601951). UniProt
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Data in green originates from UniProtKB  
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Data in yellow originates from Pfam  , by interacting with the HMMER3 web site  
Data in purple originates from Phosphosite  .
Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
Data in grey has been calculated using BioJava  . Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  
  • Red: potentially disorderd region
  • Blue: probably ordered region.
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Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
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Data in red indicates combined ranges of Homology Models from the SWISS-MODEL Repository  
The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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