ifg-1;rsks-1

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Genetic mutants with ifg-1, rsks-1 alterations

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

Temperature °C
20
Diet
NGM; OP50
Lifespan (days)
30.6
Lifespan change (compared to wild type)
59.38%
Lifespan comparisons
Double mutant ifg-1(RNAi);rsks-1(ok1255) has a lifespan of 30.6 days, while single mutant rsks-1(ok1255) has a lifespan of 21.0 days and wild type has a lifespan of 19.2 days.
Type of interaction
See methods
Almost additive (positive)
Citation
View abstract
Pan KZ et al., 2007, Inhibition of mRNA translation extends lifespan in Caenorhabditis elegans. Aging Cell. 6(1):111-9 17266680 Click here to select all mutants from this PubMed ID in the graph
Abstract
Protein synthesis is a regulated cellular process that links nutrients in the environment to organismal growth and development. Here we examine the role of genes that regulate mRNA translation in determining growth, reproduction, stress resistance and lifespan. Translational control of protein synthesis by regulators such as the cap-binding complex and S6 kinase play an important role during growth. We observe that inhibition of various genes in the translation initiation complex including ifg-1, the worm homologue of eIF4G, which is a scaffold protein in the cap-binding complex; and rsks-1, the worm homologue of S6 kinase, results in lifespan extension in Caenorhabditis elegans. Inhibition of ifg-1 or rsks-1 also slows development, reduces fecundity and increases resistance to starvation. A reduction in ifg-1 expression in dauers was also observed, suggesting an inhibition of protein translation during the dauer state. Thus, mRNA translation exerts pleiotropic effects on growth, reproduction, stress resistance and lifespan in C. elegans.

Search genes: ifg-1 rsks-1

Entrez ID
Symbol
GenAge
Wormbase ID

174322
ifg-1
View on GenAge (ifg-1)
WBGene00002066

Initiation Factor 4G (eIF4G) family

Locus: CELE_M110.4

Wormbase description: ifg-1 encodes, by alternative splicing, two orthologs of the translation initiation factor 4F, ribosome/mRNA-bridging subunit (eIF-4G); by homology, IFG-1 is predicted to function in poly(A) tail-dependent translation initiation; loss of ifg-1 activity in adult animals extends lifespan.

Entrez ID
Symbol
GenAge
Wormbase ID

176554
rsks-1
View on GenAge (rsks-1)
WBGene00012929

Ribosomal protein S6 kinase beta

Locus: CELE_Y47D3A.16

Wormbase description: rsks-1 encodes a putative ribosomal protein S6 kinase (S6K) required additively with IFG-1 for normally high levels of protein synthesis, and for normally short lifespan; RSKS-1's effect on lifespan is independent of DAF-16, ISP-1, and SIR-2.1, and does not correlate with juglone resistance, but does correlate with abnormally high resistance to starvation and (perhaps) thermotolerance; RSKS-1 is required for normal juglone resistance, as well as normally rapid growth and normal brood sizes; RSKS-1 is expressed in E-lineage embryonic cells, and in pharyngeal and hypodermal cells of larvae and adults; RSKS-1 is orthologous to human RPS6KB1 (OMIM:608938) and RPS6KB2 (OMIM:608939).

Orthologs of ifg-1;rsks-1 in SynergyAge

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Species	Gene

Not in SynergyAge
Species	Gene
Drosophila melanogaster	eIF4G2;S6k
Mus musculus	Eif4g1;Rps6kb1
Mus musculus	Eif4g1;Rps6kb2
Mus musculus	Eif4g3;Rps6kb1
Mus musculus	Eif4g3;Rps6kb2
Mus musculus	Rps6kb1;Eif4g1
Mus musculus	Rps6kb1;Eif4g3
Mus musculus	Rps6kb2;Eif4g1
Mus musculus	Rps6kb2;Eif4g3

Orthologs of ifg-1 in SynergyAge

Show in SynergyAge
Species	Gene

Not in SynergyAge
Species	Gene
Drosophila melanogaster	eIF4G2
Mus musculus	Eif4g1
Mus musculus	Eif4g3

Orthologs of rsks-1 in SynergyAge

Show in SynergyAge
Species	Gene

Not in SynergyAge
Species	Gene
Drosophila melanogaster	S6k
Mus musculus	Rps6kb1
Mus musculus	Rps6kb2

About

SynergyAge database hosts high-quality, manually curated information about the synergistic and antagonistic lifespan effects of genetic interventions in model organisms, also allowing users to explore the longevity relationships between genes in a visual way.