Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10869952 | FEBS Letters | 2015 | 8 Pages |
Abstract
Mitochondrial pre-mRNAs in trypanosomatids undergo RNA editing to be converted into translatable mRNAs. The reaction is characterized by the insertion and deletion of uridine residues and is catalyzed by a macromolecular protein complex called the editosome. Despite intensive research, structural information for the majority of editosome proteins is still missing and no high resolution structure for the editosome exists. Here we present a comprehensive structural bioinformatics analysis of all proteins of the Trypanosoma brucei editosome. We specifically focus on the interplay between intrinsic order and disorder. According to computational predictions, editosome proteins involved in the basal reaction steps of the processing cycle are mostly ordered. By contrast, thirty percent of the amino acid content of the editosome is intrinsically disordered, which includes most prominently proteins with OB-fold domains. Based on the data we suggest a functional model, in which the structurally disordered domains of the complex are correlated with the RNA binding and RNA unfolding activity of the T. brucei editosome.
Keywords
guide RNAsSAXSOligonucleotide/oligosaccharide binding foldNucleotidyltransferaseRMSDPDBEditosomeRECCgRNACTDdsRBMZNFIDRsNTDnuclear magnetic resonanceOB-foldIntrinsic disorderroot-mean-square deviationZinc fingerTemSANSNMRC-terminal domainN-terminal domainStructural Classification of ProteinsIntrinsically disordered regionsTransmission electron microscopySCOPRNA editingSmall-angle X-ray scatteringSmall-angle neutron scatteringProtein Data BankProtein structure prediction
Related Topics
Life Sciences
Agricultural and Biological Sciences
Plant Science
Authors
Anna Czerwoniec, Joanna M. Kasprzak, Patrycja Bytner, Mateusz DobrychÅop, Janusz M. Bujnicki,