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PMID:24060997
| Citation |
'Ramírez, CA, Dea-Ayuela, MA, Gutiérrez-Blázquez, MD, Bolas-Fernández, F, Requena, JM and Puerta, CJ (2013) Identification of proteins interacting with HSP70 mRNAs in Leishmania braziliensis. J Proteomics ' |
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| Abstract |
HSP70 protein is involved in Leishmania differentiation, apoptosis, antimony-resistance and host-immune response. Therefore, this protein and the regulatory mechanisms of HSP70 gene expression are promising targets for therapeutic intervention against leishmaniasis. The regulation of mRNA expression in trypanosomatids operates mostly through the interaction of trans-acting proteins, and elements located in the untranslated regions of mRNAs. The aim of this work was to identify protein factors interacting specifically with the Leishmania braziliensis HSP70 mRNAs. Thus, the 5' UTR and the two types of 3' UTRs (UTR-I and UTR-II) from L. braziliensis HSP70 genes were used as baits in pull down assays using total protein extracts from parasites cultured at 26 or 35°C. The captured proteins were resolved by two-dimensional gel electrophoresis (2-D) and identified by mass spectrometry (MS) analysis. As a result, 52 different proteins were identified based on their binding to the L. braziliensis HSP70-mRNAs. As expected, several of the identified proteins were related to RNA metabolism (27%) and translation process (7%). In addition, five hypothetical conserved proteins having motifs related with RNA interaction were also identified (9.6%). Nevertheless, unexpected proteins, apparently unrelated to the mRNA expression, were also identified. The biological significance of these and others L.braziliensis detected proteins, including the HSP70 itself, are discussed. |
| Links |
PubMed Online version:10.1016/j.jprot.2013.09.008 |
| Keywords |
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| edit table |
Significance
Annotations
| Gene product | Qualifier | GO Term | Evidence Code | with/from | Aspect | Extension | Notes | Status |
|---|---|---|---|---|---|---|---|---|
| GO:0004335: galactokinase activity |
ECO:0000314: |
F |
Figure 1. |
complete | ||||
| GO:0003978: UDP-glucose 4-epimerase activity |
ECO:0000314: |
F |
Figure 1. |
complete | ||||
| GO:0008023: transcription elongation factor complex |
ECO:0000314: |
C |
Figure 1 |
complete | ||||
| GO:0005853: eukaryotic translation elongation factor 1 complex |
ECO:0000314: |
C |
Figure 1. |
complete | ||||
| GO:0005662: DNA replication factor A complex |
ECO:0000314: |
C |
Figure 1. |
complete | ||||
| GO:0004004: ATP-dependent RNA helicase activity |
ECO:0000314: |
F |
Figure 1. |
complete | ||||
| GO:0042556: eukaryotic elongation factor-2 kinase regulator activity |
ECO:0000314: |
F |
Figure 1 |
complete | ||||
See also
References
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