Functional analysis of a conserved nuage/piRNA pathway gene, tapas.
Piwi-interacting RNAs (piRNAs) have been implicated in defending the germline genome against the deleterious retroelements. Most of the piRNA pathway components have been shown to localize to the nuage, a unique perinuclear structure found in the animal germlines. Recently, a tudor domain protein Te...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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2011
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| Online Access: | http://hdl.handle.net/10356/45260 |
| _version_ | 1811681299818086400 |
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| author | Or, Yu Zuan. |
| author2 | Kristen Elizabeth Sadler |
| author_facet | Kristen Elizabeth Sadler Or, Yu Zuan. |
| author_sort | Or, Yu Zuan. |
| collection | NTU |
| description | Piwi-interacting RNAs (piRNAs) have been implicated in defending the germline genome against the deleterious retroelements. Most of the piRNA pathway components have been shown to localize to the nuage, a unique perinuclear structure found in the animal germlines. Recently, a tudor domain protein Tejas that localizes to the nuage, has been reported to be involved in the germline piRNA pathway in Drosophila. Later, a homolog of Tejas, Tapas, was also found to be functioning in the piRNA pathway and localize to the nuage in Drosophila. Here, I report the characterization of Tapas for its role in the piRNA pathway. I show that tapas is involved in the hierarchical assembly of nuage: the proper localization of Vasa, Spindle-E, Tejas, Aubergine, Krimper, Argonaute 3 and Maelstrom to the nuage depends on tapas, and localization of Tapas is independent of any of the known nuage components. These results suggest that tapas probably functions upstream in the hierarchical assembly. Further, I found that Tapas physically interacts with some of the piRNA pathway components such as Aubergine, Argonaute3, Vasa, Tejas and Spindle-E. These results imply that Tapas probably aids in the formation of macromolecular complex at the perinuclear region, supporting the idea that piRNA components form a macrocomplex or sub-complexes at the perinuclear nuage by being engaged in piRNAs production. |
| first_indexed | 2024-10-01T03:38:45Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/45260 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:38:45Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | ntu-10356/452602023-02-28T18:04:30Z Functional analysis of a conserved nuage/piRNA pathway gene, tapas. Or, Yu Zuan. Kristen Elizabeth Sadler School of Biological Sciences Temasek Laboratories DRNTU::Science::Biological sciences::Genetics Piwi-interacting RNAs (piRNAs) have been implicated in defending the germline genome against the deleterious retroelements. Most of the piRNA pathway components have been shown to localize to the nuage, a unique perinuclear structure found in the animal germlines. Recently, a tudor domain protein Tejas that localizes to the nuage, has been reported to be involved in the germline piRNA pathway in Drosophila. Later, a homolog of Tejas, Tapas, was also found to be functioning in the piRNA pathway and localize to the nuage in Drosophila. Here, I report the characterization of Tapas for its role in the piRNA pathway. I show that tapas is involved in the hierarchical assembly of nuage: the proper localization of Vasa, Spindle-E, Tejas, Aubergine, Krimper, Argonaute 3 and Maelstrom to the nuage depends on tapas, and localization of Tapas is independent of any of the known nuage components. These results suggest that tapas probably functions upstream in the hierarchical assembly. Further, I found that Tapas physically interacts with some of the piRNA pathway components such as Aubergine, Argonaute3, Vasa, Tejas and Spindle-E. These results imply that Tapas probably aids in the formation of macromolecular complex at the perinuclear region, supporting the idea that piRNA components form a macrocomplex or sub-complexes at the perinuclear nuage by being engaged in piRNAs production. Bachelor of Science in Biological Sciences 2011-06-10T06:04:14Z 2011-06-10T06:04:14Z 2011 2011 Final Year Project (FYP) http://hdl.handle.net/10356/45260 en Nanyang Technological University 30 p. application/pdf |
| spellingShingle | DRNTU::Science::Biological sciences::Genetics Or, Yu Zuan. Functional analysis of a conserved nuage/piRNA pathway gene, tapas. |
| title | Functional analysis of a conserved nuage/piRNA pathway gene, tapas. |
| title_full | Functional analysis of a conserved nuage/piRNA pathway gene, tapas. |
| title_fullStr | Functional analysis of a conserved nuage/piRNA pathway gene, tapas. |
| title_full_unstemmed | Functional analysis of a conserved nuage/piRNA pathway gene, tapas. |
| title_short | Functional analysis of a conserved nuage/piRNA pathway gene, tapas. |
| title_sort | functional analysis of a conserved nuage pirna pathway gene tapas |
| topic | DRNTU::Science::Biological sciences::Genetics |
| url | http://hdl.handle.net/10356/45260 |
| work_keys_str_mv | AT oryuzuan functionalanalysisofaconservednuagepirnapathwaygenetapas |