Search Strains

quEx100 [ajm-1::sax-3 + odr-1::RFP]. ajm-1::sax-3 partially rescues the lethality of sax-3(ky123). Maintain by picking RFP+.

quEx99 [sax-3(minigene) + odr-1::RFP]. Rescues the lethality of ky123. Pick RFP+ to maintain.

quEx168 [sax-3::GFP + odr-1::RFP]. Pick RFP+ to maintain. GFP is visible at higher magnification but fades quickly. Strongest GFP is in the head region. The Chin-Sang Lab recommends researchers use this strain instead of IC450, as sax-3::GFP expression in IC699 is more consistent than in the comparable strain IC450.

quEx182 [npr-9(+) + sur-5::GFP + odr-1::RFP]. Maintain by picking GFP+. Rescuing npr genomic fragment co-injected with sur-5::GFP and odr-1::RFP]. transgenic (GFP+) animals tend to wander off the food.

Healthy and fertile but exhibit a lowly penetrant lethality, and a small but significant proportion of the mutants arrest as early larvae. Reference: Pujol N, et al. Curr Biol. 2001 Jun 5;11(11):809-21.

frIs7 [nlp-29p::GFP + col-12p::DsRed] IV. Blocks inducible expression of antimicrobial peptide nlp-29 after D. coniospara infection or treatment with PMA. Maintain under normal conditions. Reference: Labed Sa, et al. PLoS One. 2012 7(3):e33887.

frIs7 [nlp-29p::GFP + col-12p::DsRed] IV. Blocks inducible expression of antimicrobial peptide nlp-29 after D. coniospara infection or treatment with PMA. Maintain under normal conditions. Reference: Labed Sa, et al. PLoS One. 2012 7(3):e33887.

frIs7 [nlp-29p::GFP + col-12p::DsRed] IV. Blocks inducible expression of antimicrobial peptide nlp-29 after D. coniospara infection or treatment with PMA. Maintain under normal conditions. Reference: Labed Sa, et al. PLoS One. 2012 7(3):e33887.

Maintain at 15C. At 25C, nr2013 homozygotes are not viable. At 15C, less than 10% of nr2013 homozygotes develop into adults that are marginally fertile, while the majority of worms arrest at different developmental stages and exhibit dramatic defects in morphogenesis. Reference: Pujol N, et al. Curr Biol. 2001 Jun 5;11(11):809-21.

frIs7 [nlp-29p::GFP + col-12p::DsRed] IV. Blocks inducible expression of antimicrobial peptide nlp-29 after D. coniospara infection or treatment with PMA. Maintain under normal conditions. Reference: Labed Sa, et al. PLoS One. 2012 7(3):e33887.

frSi17 [mtl- 2p::rde-1 3'UTR] II. frIs7 [nlp-29p::GFP + col-12p::DsRed] IV. frSi17 inserted into ttTi5605 site using CRISPR/Cas9 engineering. RDE-1 activity is rescued in the intestine, making animals RNAi-deficient except for intestinal tissues. The frSi17 insertion can be detected using a primer within the mtl-2 promoter (jep1061: aacaaacgtgggatgtaacc) in combination with downstream primer in rde-1 (jep2817 tcatactcgtagtattcccg), producing a 786 bp product if insertion is present. rde-1(ne300) can be genotyped by sequencing the PCR product from jep2299: gaacaacgacaatcgagcacca and jep3108: ATcttgtgaccgaactgtcc. (jep3108 is not present in the frSi17 transgene) Reference: Watts JS, et al. G3 (Bethesda) 2020 Nov 5;10(11):4167-4176. PMID: 32943454

frSi21 [col-62p::rde-1 3'UTR] II. frIs7 [nlp-29p::GFP + col-12p::DsRed] IV. frSi21 inserted into ttTi5605 site using CRISPR/Cas9 engineering. RDE-1 activity is rescued in adult epidermal tissues, making animals RNAi-deficient except for hypodermal (skin) tissues from the young adult stage. The frSi21 insertion can be detected using a primer within the col-62 promoter (jep2245: caaaaaggcgggatgagcag) in combination with downstream primer in rde-1 (jep2817 tcatactcgtagtattcccg), producing a 965 bp product if insertion is present. rde-1(ne300) can be genotyped by sequencing the PCR product from jep2299: gaacaacgacaatcgagcacca and jep3108: ATcttgtgaccgaactgtcc (jep3108 is not present in the frSi21 transgene). Reference: Watts JS, et al. G3 (Bethesda) 2020 Nov 5;10(11):4167-4176. PMID: 32943454

frIs7 [nlp-29p::GFP + col-12p::DsRed] IV. Displays tpa-1 phenotypes (e.g. resistance to PMA). Isolated in a genetic screen for mutants failing to show an induction of nlp-29p::GFP reporter gene expression upon infection with the fungus Drechmeria coniospora (the Nipi phenotype). References: Pujol N, et al. Curr Biol. 2008 Apr 8;18(7):481-9. Ziegler K, et al. Cell Host Microbe. 2009 Apr 23;5(4):341-52.

frIs7 [nlp-29p::GFP + col-12p::DsRed] IV. Displays tpa-1 phenotypes (e.g. resistance to PMA). Isolated in a genetic screen for mutants failing to show an induction of nlp-29p::GFP reporter gene expression upon infection with the fungus Drechmeria coniospora (the Nipi phenotype). References: Pujol N, et al. Curr Biol. 2008 Apr 8;18(7):481-9. Ziegler K, et al. Cell Host Microbe. 2009 Apr 23;5(4):341-52.

frIs7 [nlp-29p::GFP + col-12p::DsRed] IV. Constitutive expression of antimicrobial peptide nlp-29. Maintain under normal conditions. Reference: Lee KZ, et al. Virulence. 2010 May-Jun;1(3):113-22.

No phenotype. Contains a 2063 bp deletion in the smf-1 locus (K11G12.4) from position 17016 to position 19079 on the K11G12 cosmid. eh5 was obtained from the Sanger Centre Knockout Service in strain HX104. Reference: Au C, et al. PLoS One. 2009 Nov 18;4(11):e7792.

AID* and EmGFP tag inserted at the 3' end of the endogenous mdt-15 gene locus by CRISPR/Cas9 engineering. This strain can be used for auxin-inducible degradation (AID) of MDT-15 protein. Reference: Lee D, et al. PLoS Biol. 2019 Aug 13;17(8):e3000415. doi: 10.1371/journal.pbio.3000415. PMID: 31408455.

The maintenance of neuronal cell body positions is abnormal.

The maintenance of neuronal cell body positions is abnormal.

Weak allele. Severe thermotaxis defect. Weak defects in chemitaxis. Subcellular localization of SNB-1:GFP is abnormal in RIA interneurons.

Putative null allele which lacks whole of the first exon of the gene (lacking 361 bp area corresponding to 13460-13820 of the cosmid F13G3). Severe thermotaxis defect. Weak defects in chemitaxis. Subcellular localization of synaptic proteins is abnormal in RIA interneurons.

Putative null allele which lacks whole of the 3rd exon of the gene (lacking 260 bp area corresponding to 12984-13243 of the cosmid F13G3). Severe thermotaxis defect. Weak defects in chemitaxis. Subcellular localization of SNB-1::GFP is abnormal in RIA interneurons.

The maintenance of neuronal cell body positions is abnormal.

nuIs5 [glr-1::GFP + glr-1::G(alpha)s(Q227L) V + lin-15(+)] V. Reference: Tehrani N, et al. (2014) PLoS One 9(11):e113060.

kpIs100 [pie-1p::Ub(G76V)::GFP::H2B::drp-1 3' UTR + unc-119(+)]. [NOTE: (4/4/2025): Strain segregates Rol, and non-Rol, possibly due to a background dpy-10 mutation; both express GFP as expected. It was recommended that non-Rollers be picked when maintaining the strain.] Expresses Ubiquitin::GFP fusion protein in the germ line. The last amino acid of ubiquitin is mutated to valine (G76V), which prevents the cleavage of ubiquitin from GFP by the deubiqutinating enzymes and renders the GFP constitutively targeted for degradation by the proteasome. The strain can be used to assay proteasome activity in the germ line. Reference: Kumar GA & Subramaniam K. Development. 2018 Mar 29;145(7):dev163949. PMID: 29540500

Heterozygotes are wild type and segregate wild type heterozygotes, paralyzed DpyUncs, and Uncs with germline tumors. Pick WT and check segregation of progeny to maintain. Reference: Vaid S, et al. Development. 2013 Apr;140(8):1645-54.

Improvement in thermotolerance at 37C, though weaker than in null mutants. Longer lifespan than to tax-2(gk117937) null mutant. Higher frequency of dauer formation and survival at 28C than tax-2(gk117937) null mutant. Reference: Hwang HY, et al. Front Genet. 2020 Oct 6;11:566948. doi: 10.3389/fgene.2020.566948. PMID: 33133151

kyIs140 [str-2::GFP + lin-15(+)] I. vyEx1462 (die-1(fosmid)::Venus + odr-1::DsRed + ofm-1::DsRed). Pick animals with DsRed+ coelomocytes to maintain. Animals with vyEx1462 show 2AWC(OFF) phenotype. Extrachromosomal array rescues die-1(w34).

kyIs140 [str-2::GFP + lin-15(+)] I. vyEx1510 (ceh-36p::die-1(cDNA) + odr-1::DsRed + ofm-1::DsRed). Pick animals with DsRed+ coelomocytes to maintain. Animals with vyEx1510 show 2AWC(OFF) phenotype.

mNG tag inserted into endogenous mls-2 locus after the start codon using CRISPR/Cas9 engineering, producing a translational mNG::MLS-2 reporter protein. Derived by SEC excision of mls-2(vy247[mNG::SEC::mls-2 knock-in]) in parental strain. mNG::MLS-2 is detected in the nucleus of a few cells in embryos, and localizes to the nucleus of a subset of head cells and the M mesoblast in larvae and adults. Reference: Xiong R., et al. (2022). mNG-tagged mls-2 knock-in alleles in C. elegans. microPublication Biology. 10.17912/micropub.biology.000529.

ufIs104 [nlp-12(+) + lgc-11p::GFP]. ufIs104 contains a 1.76 kb PCR product containing the nlp-12 genomic locus (?354 bp to +1407 bp relative to the transcriptional start). Over-expression of nlp-12 results in increased body bend amplitude. This strain has a high rate of sterility but can be successfully maintained as a homozygote. Reference: Bhattacharya R, et al. PLoS Genet. 2014 Aug 28;10(8):e1004584. doi: 10.1371/journal.pgen.1004584. PMID: 25167143.

weIs15 [pie-1p::GFP::eea-1(FYVEx2) + unc-119(+)]. Phenotypically wild type. Early endosomes in germline and embryos are GFP+. GFP is fused to the tandem FYVE domains of eea-1/T10G3.5, under control of the pie-1 promoter. Grows at any temp, but has bright GFP at 25C.

mCherry tag inserted at 3' end of endogenous rps-6 locus. Reduced thermotolence at 35C compared to N2 controls. Reference: Somers H, et al. Cell Reports Methods. (2022) Apr 25;2(4):100203 PMID: 35497499

Synthetic Daf at 15C when in an unc-31(e169) background.

Delayed hatching from egg shell. QL and descendant cells migrate forward instead of backward (incomplete penetrance). Tc1 insertion mutant.

Butanone enhancement abnormal. Dyf. Weak Dpy. Allelic to bbs-8(nx77).

Forms dauer larvae in the unc-31(e169) background at 25C. Forms dauer-like larvae at 25C on NGM plates without cholesterol.

Forms dauer larvae in the unc-31(e169) background at 25C. Forms dauer-like larvae at 25C on NGM plates without cholesterol.

Butanone enhancement abnormal. Abnormal chemotaxis to x1/1000 butanone. 2AWC-OFF (no expression of str-2::GFP in either of the two AWC neurons. Allelic to nsy-6(ky626).

utEx33 [flr-1p::GFP + rol-6(su1006)]. Pick Rollers to maintain. GFP is localized exclusively to intestinal nuclei because of the nuclear localization signal and lack of FLR-1 membrane spanning domains. Reference: Take-uchi et al.: Proc Natl Acd Sci USA. 1998 Sep 29;95(20):11775-80, Take-uchi et al.: Mol Biol Cell. 2005 Mar;16(3):1355-65, Kobayashi et al.: Genes to Cells 2011 May;16(5):565-75.

Partially resistant to 400ug/ml NaF. Suppressor of the slow-growing phenotype of mutations in flr-1, flr-3, and flr-4.

Partially resistant to 400ug/ml NaF. Weakly Dpy. (Not determined if this is due to ut5 or a closely linked mutation.) Suppressor of the slow-growing phenotype of mutations in flr-1, flr-3, and flr-4. gpla-1 formerly known as flr-2.

Resistant to 400ug/ml NaF. Slow growth. Small brood size. Small and thin.

Resistant to 400ug/ml NaF. Slow growth. Small brood size. Small and thin.

Resistant to 400ug/ml NaF. Slow growth. Small brood size. Small and thin.

Homozygous viable. Deletion of 2572 bp in parental strain N2. Left flanking sequence: atctatttttttaaggccgaac; Right flanking sequence: tattggcagcaagcgttgcgaa. sgRNA #1: ccatacgttgttgtggagtt; sgRNA #2: tgtgaagcggaaaaccctat.

Homozygous viable. Deletion of 1579 bp in parental strain N2. Left flanking sequence: gcaaaaaaaaacataccaga; Right flanking sequence: cgtggtttcaggccattacg. sgRNA #1: cctcactgatgatcgtcatc; sgRNA #2: aaaggttcagcattcacacg.

Homozygous viable. Deletion of 2532 bp in parental strain N2. Left flanking sequence: agtcaattcggaactccatgt; Right flanking sequence: tctacggtttaaacaactcctc. sgRNA #1: aacgggatctgttcatcaca; sgRNA #2: agtgtgaaacgcaacgtcta.