The nuclear RNA binding protein RBP33 influences mRNA and spliced leader RNA abundance in Trypanosoma brucei
Publisher DOI
PubMed ID
28069429
Abstract
RNA recognition motif (RRM) containing proteins are important regulators of gene expression in trypanosomes. Here we expand our current knowledge on the exclusively nuclear localized RRM domain containing protein RBP33 of Trypanosoma brucei. Overexpression of RBP33 leads to a quick growth arrest in G2/M in bloodstream form cells likely due to an overall mRNA- and spliced leader abundance decrease while the ribosomal RNAs remain unaffected. The recombinant RBP33 binds to poly(A) and random sequence RNA in vitro confirming its role as a RNA binding protein. Finally super-resolution microscopy detects RBP33 in small punctae throughout the nucleus and surrounding the nucleolus, however the signal is depleted inside the nucleolus.
Date Issued
2017-03
Publication Type
Article
Subject(s)
Language(s)
en
Author(s)
Additional Credits
Journal
Molecular and biochemical parasitology
Publisher
Elsevier
ISSN
0166-6851
Access(Rights)
restricted