isp-1;tbx-2

There is no network for this step.

Fullscreen mode

Hide graph

Legend

Genetic mutants with isp-1, tbx-2 alterations

Names of genes are ordered alphabetically. For the order of interventions, please see the specific paper.

Temperature °C
20
Diet
NGM
Lifespan (days)
28.74
Lifespan comparisons
Double mutant isp-1(qm150);tbx-2(RNAi) has a lifespan of 28.74 days, while single mutant isp-1(qm150) has a lifespan of 30.21 days.
Citation
View abstract
Khan MH et al., 2013, TAF-4 is required for the life extension of isp-1, clk-1 and tpk-1 Mit mutants. Aging (Albany NY). 5(10):741-58 24107417 Click here to select all mutants from this PubMed ID in the graph
Abstract
While numerous life-extending manipulations have been discovered in the nematode Caenorhabditis elegans, one that remains most enigmatic is disruption of oxidative phosphorylation. In order to unravel how such an ostensibly deleterious manipulation can extend lifespan, we sought to identify the ensemble of nuclear transcription factors that are activated in response to defective mitochondrial electron transport chain (ETC) function. Using a feeding RNAi approach, we targeted over 400 transcription factors and identified 15 that, when reduced in function, reproducibly and differentially altered the development, stress response, and/or fecundity of isp-1(qm150) Mit mutants relative to wild-type animals. Seven of these transcription factors--AHA-1, CEH-18, HIF-1, JUN-1, NHR-27, NHR-49 and the CREB homolog-1 (CRH-1)-interacting protein TAF-4--were also essential for isp-1 life extension. When we tested the involvement of these seven transcription factors in the life extension of two other Mit mutants, namely clk-1(qm30) and tpk-1(qm162), TAF-4 and HIF-1 were consistently required. Our findings suggest that the Mit phenotype is under the control of multiple transcriptional responses, and that TAF-4 and HIF-1 may be part of a general signaling axis that specifies Mit mutant life extension.

Search genes: isp-1 tbx-2

Entrez ID
Symbol
GenAge
Wormbase ID

177609
isp-1
View on GenAge (isp-1)
WBGene00002162

Cytochrome b-c1 complex subunit Rieske, mitochondrial

Locus: CELE_F42G8.12

Wormbase description: isp-1 encodes a Rieske iron sulphur protein (ISP) which is a subunit of the mitochondrial complex III in the mitochondrial membrane; the subunits are highly conserved in all mitochondria and aerobic bacteria; mitochondrial complex III catalyses electron transport from ubiquinol to cytochrome c; isp-1 mutants show low oxygen consumption, a decreased sensitivity to reactive oxygen species and increased lifespan suggesting that mitochondrial electron transport is a key factor affecting life span; isp-1 affects the rates of physiological processes like reproduction and development and also affects behavior.

Entrez ID
Symbol
GenAge
Wormbase ID

175698
tbx-2
View on GenAge (tbx-2)
WBGene00006543

T-box protein 2

Locus: CELE_F21H11.3

Wormbase description: tbx-2 encodes one of 21 C. elegans T-box transcription factors; during development, tbx-2 activity is required for normal adaptation, but not chemotaxis, to attractive odorants sensed by the AWC amphid neurons; tbx-2 is required redundantly with unc-3 and unc-31 for negative regulation of dauer formation, and large-scale RNAi screens reveal an essential role for tbx-2 in early larval development, normal rates of postembryonic growth, and locomotory behavior; tbx-2 is also required along with pha-4 for embryonic precursor cells to adopt a pharyngeal muscle fate; TBX-2 and PHA-4 are mutually dependant on each other to maintain expression implicating them in a regulatory loop that controls commitment to the pharyngeal muscle fate; yeast two-hybrid assays have identified that TBX-2 interacts with UBC-9 (E2 SUMO conjugating enzyme) and GEI-17 (E3 SUMO ligase); based on the two-hybrid interaction and the similar pharyngeal muscle phenotype of ubc-9, it is likely that protein sumoylation is required for precursor-cell derived pharyngeal muscle development; antibodies to TBX-2 detect expression in the cytoplasm of amphid and pharyngeal neurons in larvae and adults, suggesting that TBX-2 function may be controlled, in part, by regulation of its subcellular localization; in addition, in situ hybridization studies indicate that tbx-2 mRNA is expressed during mid-embryogenesis; tbx-2 expression in the AWC amphid neurons is sufficient to rescue the olfactory adaptation defects seen in tbx-2 mutant animals.

Orthologs of isp-1;tbx-2 in SynergyAge

Show in SynergyAge
Species	Gene

Not in SynergyAge
Species	Gene
Mus musculus	Tbx3;Uqcrfs1
Mus musculus	Tbx2;Uqcrfs1

Orthologs of isp-1 in SynergyAge

Show in SynergyAge
Species	Gene

Not in SynergyAge
Species	Gene
Mus musculus	Uqcrfs1

Orthologs of tbx-2 in SynergyAge

Show in SynergyAge
Species	Gene