Gene: top-1 - Caenorhabditis elegans
Last modified: Dec 09, 2014. Release 1 • Page created: May 19, 2024
Summary
Gene Symbol | : | top-1 | ||||||||||||||||||||||||||||
NCBI Gene ID | : | 266847 | ||||||||||||||||||||||||||||
Species | : | Caenorhabditis elegans | ||||||||||||||||||||||||||||
Gene Synonyms | : | CE12282 | CE12284 | CELE_M01E5.5 | M01E5.5 | M01E5.5a | M01E5.5b | Protein TOP-1 | top-1 | WP:CE12282 | WP:CE12284 Source: GPSDB |
||||||||||||||||||||||||||||
Gene Homologs | : | AgaP_AGAP004078 (Anopheles gambiae) | AGOS_ACL008C (Eremothecium gossypii) | AT5G55310.1 (Arabidopsis thaliana) | KLLA0C06116g (Kluyveromyces lactis) | MGG_09917 (Magnaporthe oryzae) | NCU09118 (Neurospora crassa) | Os08g0154600 (Oryza sativa) | top-1 (Caenorhabditis elegans) | TOP1 (Arabidopsis thaliana) | TOP1 (Bos taurus) | TOP1 (Canis lupus familiaris) | Top1 (Drosophila melanogaster) | TOP1 (Gallus gallus) | TOP1 (Homo sapiens) | TOP1 (Macaca mulatta) | Top1 (Mus musculus) | TOP1 (Pan troglodytes) | Top1 (Rattus norvegicus) | TOP1 (Saccharomyces cerevisiae) | top1 (Schizosaccharomyces pombe) | top1l (Danio rerio) | ||||||||||||||||||||||||||||
Ageing Relevance Analysis | : |
|
||||||||||||||||||||||||||||
Ageing Factor Stable ID | : | AF_005230 | ||||||||||||||||||||||||||||
Download | : | XML |
Protein Information
Protein Name | Species | UniProt Accession Number | UniProt Entry Name | Protein Function | Sequence |
---|---|---|---|---|---|
DNA topoisomerase 1 | Caenorhabditis elegans | O17966 (UniProtKB/Swiss-Prot) | TOP1_CAEEL (UniProtKB/Swiss-Prot) | Releases the supercoiling and torsional tension of DNA introduced during the DNA replication and transcription by transiently cleaving and rejoining one strand of the DNA duplex. Introduces a single-strand break via transesterification at a target site in duplex DNA. The scissile phosphodiester is attacked by the catalytic tyrosine of the enzyme, resulting in the formation of a DNA-(3'-phosphotyrosyl)-enzyme intermediate and the expulsion of a 5'-OH DNA strand. The free DNA strand than undergoes passage around the unbroken strand thus removing DNA supercoils. Finally, in the religation step, the DNA 5'-OH attacks the covalent intermediate to expel the active-site tyrosine and restore the DNA phosphodiester backbone. | View |
Observations
Ageing Phenotype
Data Type 1
Ageing Relevance:
- yes (Exp. Analysis)
- yes, but no ageing factor assigned (Exp. Analysis)
- no (Exp. Analysis)
- putative (Comp. Analysis)
# | Observation Stable ID | Species | Gene | Other Ageing Factor | Description | PubMed | Source | ||||
---|---|---|---|---|---|---|---|---|---|---|---|
1 | OB_006070 | Caenorhabditis elegans |
|
RNA interference decreased median lifespan by 19% in wild type animals and 42% in daf-2 mutants. | 18006689 | GenAge |
Data Type 2
Ageing Relevance:
- yes (Exp. Analysis)
- yes, but no ageing factor assigned (Exp. Analysis)
- no (Exp. Analysis)
- putative (Comp. Analysis)
Organism | Ageing Factor | Lifespan Observation | Reference | ||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
# | Observation Stable ID | Species | Strain | Gene | Compound | Other Ageing Factor | Significant Lifespan Effect | Change | Observed Lifespan | Reference Lifespan | Lifespan Unit | Measure | Temperature | Temperature Unit | Sex/Mating Type | Description | Author | Year | PubMed | DOI | Source | ||||||||||||||||||||||||||||
1 | OB_001865 | Caenorhabditis elegans | N2 |
|
increased | 51.02% | 22.2 | 14.7 | days | median | 25 | ℃ | hermaphrodite | A genome-wide RNAi screen was performed to identify genes necessary for the extended life span of daf-2 mutants and identified approximately 200 gene inactivations that shorten daf-2 life span. Some of these gene inactivations dramatically shorten daf-2 mutant life span but less dramatically shorten daf-2; daf-16 mutant or wild-type life span. RNAi experiments were initiated at egg. Animals were grown at 15 degrees C until L4, then transferred to 25 degrees C. | Samuelson et al. | 2007 | 18006689 | doi:10.1101/gad.1588907 | Lifespan Observations Database (ID: 3179) | ||||||||||||||||||||||||||||||
2 | OB_004022 | Caenorhabditis elegans |
|
increased | 42.00% | RNA interference decreased median lifespan by 42% in daf-2 mutants. | Samuelson et al. | 2007 | 18006689 | doi:10.1101/gad.1588907 | Lifespan Observations Database (ID: 726) | ||||||||||||||||||||||||||||||||||||||
3 | OB_004021 | Caenorhabditis elegans |
|
increased | 19.00% | RNA interference decreased median lifespan by 19% in wild type animals. | Samuelson et al. | 2007 | 18006689 | doi:10.1101/gad.1588907 | Lifespan Observations Database (ID: 725) | ||||||||||||||||||||||||||||||||||||||
4 | OB_006071 | Caenorhabditis elegans |
|
decreased | -19.00% | Median | RNA interference decreased median lifespan by 19% in wild type animals and 42% in daf-2 mutants. | Samuelson et al. | 2007 | 18006689 | doi:10.1101/gad.1588907 | GenAge | |||||||||||||||||||||||||||||||||||||
5 | OB_001752 | Caenorhabditis elegans | N2 |
|
decreased | -19.73% | 11.8 | 14.7 | days | median | 25 | ℃ | hermaphrodite | A genome-wide RNAi screen was performed to identify genes necessary for the extended life span of daf-2 mutants and identified approximately 200 gene inactivations that shorten daf-2 life span. Some of these gene inactivations dramatically shorten daf-2 mutant life span but less dramatically shorten daf-2; daf-16 mutant or wild-type life span. RNAi experiments were initiated at egg. Animals were grown at 15 degrees C until L4, then transferred to 25 degrees C. | Samuelson et al. | 2007 | 18006689 | doi:10.1101/gad.1588907 | Lifespan Observations Database (ID: 3077) | ||||||||||||||||||||||||||||||
6 | OB_002018 | Caenorhabditis elegans | N2 |
|
decreased | -27.89% | 10.6 | 14.7 | days | median | 25 | ℃ | hermaphrodite | A genome-wide RNAi screen was performed to identify genes necessary for the extended life span of daf-2 mutants and identified approximately 200 gene inactivations that shorten daf-2 life span. Some of these gene inactivations dramatically shorten daf-2 mutant life span but less dramatically shorten daf-2; daf-16 mutant or wild-type life span. RNAi experiments were initiated at egg. Animals were grown at 15 degrees C until L4, then transferred to 25 degrees C. | Samuelson et al. | 2007 | 18006689 | doi:10.1101/gad.1588907 | Lifespan Observations Database (ID: 3316) |
Homology Analysis
Ageing Relevance:
- yes (Exp. Analysis)
- yes, but no ageing factor assigned (Exp. Analysis)
- no (Exp. Analysis)
- putative (Comp. Analysis)
Legend:
- #EGHG:
- Number of Experimentally Confirmed Ageing-related Genes In Homology Group
Sequences
TOP1_CAEEL | O17966 | DNA topoisomerase 1 (Caenorhabditis elegans) from UniProtKB/Swiss-Prot Length: 806 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 370 380 390 400 410 420 430 440 450 460 470 480 490 500 510 520 530 540 550 560 570 580 590 600 610 620 630 640 650 660 670 680 690 700 710 720 730 740 750 760 770 780 790 800 TOP1_CAEEL 1 MSVVSNHHSNGNGNSTVYDTNGNDEIKKEVKDEPMASDSEVPFGELMKRDKKEKKQKKRKAESGSDEDDYKPEKRKSSAKNGKKKDVGSDSEDDYKPEKKKSKKNNKKKAQESSEDDDEESEGDVSEEDVKPQIHSDDELEEEDEAPTTDDEEEQKRKEKERRKKEKREKKERKEKKRLEKENRKIKEEDDEDSDDEDDEKAKKKKRKSKGAEKSKPSTSKKDAGGKKEPPKKKVKKEEDIEDIWEWWKEEKKPAGVKWNSLQHCGPLFAPPYIPLPSHVHFKYGGEKMKLTLETEEIAQFYAGVLDHEYSTKEAFNKNFMKDWRKVMTVEERERIHDLKKCDFRAIDAYQKEQREIRKAMTKEEKLKIKEEKEAEVKIYGIAIIDGHRQKVANFRIEPPGVFRGRGGHPKMGLIKKRIMPEDVIINCGKDTEIPKPPPGHKWKEVRHDNTVTWLCSWTESVLGQNKYIMLNPSSKIKGEKDFEKYETARRLKKKIGGIRERYTDDFKSKEMRVRQRATALYFIDKLALRAGNEKDVDEAADTVGCCSLRVEHIKLFDSAKLNEDDKKEKEFVVEFDFLGKDSIRYFNRVSVEKRVYKNLKIFMEGKAPSDDLFDRLDTATLNDHLRSLMDGLTVKVFRTYNASITLQEQLIKLTNPKDNVAAKILSYNRANRQVAILCNHQRAVSKGFDESMQKLEQKIKDKKKEVKEAEAALKSARGAEKEKAQKKYDRLKEQLKKLKISRTDKDENKQIALGTSKLNYIDPRITVAWCKKFEVPLEKVFTKTHREKFRWAIDMTNSSDEEYVF 806
References
MeSH Terms: Only a subset of the Medical Subject Headings terms is shown: the Major Topics MeSH terms. They describe one of the main topics discussed in the article denoted by an asterisk on the MeSH term or MeSH/Subheading combination on the PubMed page. MeSH terms that belong to the Ageing MeSH are highlighted in green.
- Samuelson AV, Carr CE, Ruvkun G:
Gene activities that mediate increased life span of C. elegans insulin-like signaling mutants.
Genes Dev. 2007; 21: 2976-94.
PubMed (ID: 18006689), PubMed Central (ID: PMC2049198), doi:10.1101/gad.1588907
MeSH Terms: Caenorhabditis elegans/physiology; Genes, Helminth; Insulin-Like Growth Factor I/genetics; Mutation; Signal Transduction/physiology
Sources
Ageing-related Data Sources
- AgeFactDB Curator
- AgeFactDB Homology Analysis
- GenAge
- Lifespan Observations Database
Additional Data Sources
- UniProtKB/Swiss-Prot
- AgeFactDB Pipeline
- GPSDB
- HomoloGene
- NCBI Taxonomy
- PubMed