Unknown

Dataset Information

0

Comparative analysis of editosome proteins in trypanosomatids.


ABSTRACT: Detailed comparisons of 16 editosome proteins from Trypanosoma brucei, Trypanosoma cruzi and Leishmania major identified protein motifs associated with catalysis and protein or nucleic acid interactions that suggest their functions in RNA editing. Five related proteins with RNase III-like motifs also contain a U1-like zinc finger and either dsRBM or Pumilio motifs. These proteins may provide the endoribonuclease function in editing. Two other related proteins, at least one of which is associated with U-specific 3' exonuclease activity, contain two putative nuclease motifs. Thus, editosomes contain a plethora of nucleases or proteins presumably derived from nucleases. Five additional related proteins, three of which have zinc fingers, each contain a motif associated with an OB fold; the TUTases have C-terminal folds reminiscent of RNA binding motifs, thus indicating the presence of numerous nucleic acid and/or protein binding domains, as do the two RNA ligases and a RNA helicase, which provide for additional catalytic steps in editing. These data indicate that trypanosomatid RNA editing is orchestrated by a variety of domains for catalysis, molecular interaction and structure. These domains are generally conserved within other protein families, but some are found in novel combinations in the editosome proteins.

SUBMITTER: Worthey EA 

PROVIDER: S-EPMC275564 | biostudies-literature | 2003 Nov

REPOSITORIES: biostudies-literature

altmetric image

Publications

Comparative analysis of editosome proteins in trypanosomatids.

Worthey Elizabeth A EA   Schnaufer Achim A   Mian I Saira IS   Stuart Kenneth K   Salavati Reza R  

Nucleic acids research 20031101 22


Detailed comparisons of 16 editosome proteins from Trypanosoma brucei, Trypanosoma cruzi and Leishmania major identified protein motifs associated with catalysis and protein or nucleic acid interactions that suggest their functions in RNA editing. Five related proteins with RNase III-like motifs also contain a U1-like zinc finger and either dsRBM or Pumilio motifs. These proteins may provide the endoribonuclease function in editing. Two other related proteins, at least one of which is associated  ...[more]

Similar Datasets

| S-EPMC10574248 | biostudies-literature
| S-EPMC4378006 | biostudies-literature
| S-EPMC2934664 | biostudies-literature
| S-EPMC3446712 | biostudies-literature
| S-EPMC7288466 | biostudies-literature
| S-EPMC4510541 | biostudies-literature
| S-EPMC3091756 | biostudies-literature
| PRJNA549390 | ENA
| S-EPMC1266030 | biostudies-literature
| S-EPMC6212840 | biostudies-literature