Search Strains

jyIs13 [act-5p::GFP::ACT-5 + rol-6(su1006)] II. Rollers with GFP localized to apical side of intestine. Reference: Szumowski SC, et al. Cell Microbiol. 2015 Jul 6. PMID:26147591.

This strain carries an engineered P55Q mutation in rpl-36A. Maintain at 16-20C. Superficially wild-type, confers resistance to Cycloheximide (CHX). Reference: Zhao Q, et al. Genetics. 2025 Sep 10:iyaf189. doi: 10.1093/genetics/iyaf189. PMID: 40929375.

GFP tag inserted into the N-terminus of endogenous dao-5 locus. maintain at 16-20C. Nucleolar GFP expression. Reference: Mejia-Trujillo R, et al. bioRxiv 2025.05.07.652530; doi: https://doi.org/10.1101/2025.05.07.652530.

Maintain at 15-20C. degron::GFP tag inserted into the N-terminus of endogenous rpoa-2 locus. Nucleolar GFP expression. Reference: Zhao Q., et al. PLoS Biol. 2023 Aug 31;21(8):e3002276. doi: 10.1371/journal.pbio.3002276. PMID: 37651423.

ieSi57 [eft-3p::TIR1::mRuby::unc-54 3'UTR + Cbr-unc-119(+)] II. Maintain at 15-20C. AID* and GFP tag inserted at the N-terminus of the endogenous rpoa-2 locus. This strain can be used for auxin-inducible degradation (AID) of RPOA-2 in somatic tissues. Reference: Zhao Q, et al. PLoS Biol. 2023 Aug 31;21(8):e3002276. doi: 10.1371/journal.pbio.3002276. PMID: 37651423.

reSi2 [col-10p::TIR1::F2A::mTagBFP2::AID*::NLS::tbb-2 3'UTR] (II:0.77). Maintain at 15-20C. AID* and GFP tag inserted at the N-terminus of the endogenous rpoa-2 locus. This strain can be used for auxin-inducible degradation (AID) of RPOA-2 in hypodermis. Reference: Zhao Q, et al. PLoS Biol. 2023 Aug 31;21(8):e3002276. doi: 10.1371/journal.pbio.3002276. PMID: 37651423.

ieSi60 [myo-2p::TIR1::mRuby::unc-54 3'UTR + Cbr-unc-119(+)] II. Maintain at 15-20C. AID* and GFP tag inserted at the N-terminus of the endogenous rpoa-2 locus. This strain can be used for auxin-inducible degradation (AID) of RPOA-2 in pharyngeal muscle. Reference: Zhao Q, et al. PLoS Biol. 2023 Aug 31;21(8):e3002276. doi: 10.1371/journal.pbio.3002276. PMID: 37651423.

emcSi71 [myo-3p::TIR1::mRuby] (IV: -0.05). Maintain at 15-20C. AID* and GFP tag inserted at the N-terminus of the endogenous rpoa-2 locus. This strain can be used for auxin-inducible degradation (AID) of RPOA-2 in muscles. Reference: Zhao Q, et al. PLoS Biol. 2023 Aug 31;21(8):e3002276. doi: 10.1371/journal.pbio.3002276. PMID: 37651423.

ieSi61 [ges-1p::TIR1::mRuby::unc-54 3'UTR + Cbr-unc-119(+)] II. Maintain at 15-20C. AID* and GFP tag inserted at the N-terminus of the endogenous rpoa-2 locus. This strain can be used for auxin-inducible degradation (AID) of RPOA-2 in the intestine. Reference: Zhao Q, et al. PLoS Biol. 2023 Aug 31;21(8):e3002276. doi: 10.1371/journal.pbio.3002276. PMID: 37651423.

ieSi38 [sun-1p::TIR1::mRuby::sun-1 3'UTR + Cbr-unc-119(+)] IV. Maintain at 15-20C. AID* and GFP tag inserted at the N-terminus of the endogenous rpoa-2 locus. This strain can be used for auxin-inducible degradation (AID) of RPOA-2 in germ line and early embryos. Reference: Zhao Q, et al. PLoS Biol. 2023 Aug 31;21(8):e3002276. doi: 10.1371/journal.pbio.3002276. PMID: 37651423.

Maintain at 15-20C. degron::GFP tag inserted into the C-terminus of endogenous tsr-2 locus. Nucleolar GFP expression. Reference: Zhao Q., et al. PLoS Biol. 2023 Aug 31;21(8):e3002276. doi: 10.1371/journal.pbio.3002276. PMID: 37651423.

Maintain at 15-20C. degron::GFP tag inserted into the C-terminus of endogenous grwd-1locus. Nuclear GFP expression. Reference: Zhao Q., et al. PLoS Biol. 2023 Aug 31;21(8):e3002276. doi: 10.1371/journal.pbio.3002276. PMID: 37651423.

Maintain at 15-20C. reSi2 [col-10p::TIR1::F2A::mTagBFP2::AID*::NLS::tbb-2 3'UTR] (II:0.77). Hypodermal-specific expression of TIR1 co-factor for AID. degron::GFP tag inserted into the C-terminus of endogenous tsr-2 locus. This strain can be used for auxin-inducible degradation (AID) of TSR-2 in epidermal tissues. Nucleolar GFP expression. Reference: Zhao Q., et al. PLoS Biol. 2023 Aug 31;21(8):e3002276. doi: 10.1371/journal.pbio.3002276. PMID: 37651423.

Maintain at 15-20C. reSi2 [col-10p::TIR1::F2A::mTagBFP2::AID*::NLS::tbb-2 3'UTR] (II:0.77). Hypodermal-specific expression of TIR1 co-factor for AID. degron::GFP tag inserted into the C-terminus of endogenous tsr-2 locus. This strain can be used for auxin-inducible degradation (AID) of GRWD-1 in epidermal tissues. Nuclear GFP expression. Reference: Zhao Q., et al. PLoS Biol. 2023 Aug 31;21(8):e3002276. doi: 10.1371/journal.pbio.3002276. PMID: 37651423.

wrdSi23 [eft-3p::TIR1:F2A:mTagBFP::tbb2 3' UTR:: loxP] I. Maintain at 16-20C. AID*::GFP tag inserted at N terminus of endogenous rpoa-2 locus. mKate2 tag inserted into the C-terminus of endogenous nucl-1 locus. Nucleolar mKate2 expression. This strain can be used for auxin-inducible degradation (AID) of RPOA-2 in somatic tissues. Reference: Mejia-Trujillo R, et al. bioRxiv 2025.05.07.652530; doi: https://doi.org/10.1101/2025.05.07.652530.

ieSi11 [syp-3p::EmGFP::syp-3::syp-3 3'UTR + Cbr-unc-119(+)] II. Maintain at 16-20C. mKate2 tag inserted into the C-terminus of endogenous nucl-1 locus. Nucleolar mKate2 expression. GFP::SYP-3 expression is readily detected in spermatocytes and oocytes in the germline, and localizes to the interface between paired homologous chromosomes during most of meiotic prophase. Reference: Mejia-Trujillo R, et al. bioRxiv 2025.05.07.652530; doi: https://doi.org/10.1101/2025.05.07.652530.

wrdSi23 [eft-3p::TIR1:F2A:mTagBFP::tbb2 3' UTR:: loxP] I. Maintain at 16-20C. AID*::GFP tag inserted at C-terminus of endogenous grwd-1 locus. This strain can be used for auxin-inducible degradation (AID) of GRWD-1 in somatic tissues. Reference: Mejia-Trujillo R, et al. bioRxiv 2025.05.07.652530; doi: https://doi.org/10.1101/2025.05.07.652530.

wrdSi23 [eft-3p::TIR1:F2A:mTagBFP::tbb2 3' UTR:: loxP] I. Maintain at 16-20C. AID*::GFP tag inserted at C-terminus of endogenous grwd-1 locus. mKate2 tag inserted into the C-terminus of endogenous nucl-1 locus. Nucleolar mKate2 expression. This strain can be used for auxin-inducible degradation (AID) of GRWD-1 in somatic tissues. Reference: Mejia-Trujillo R, et al. bioRxiv 2025.05.07.652530; doi: https://doi.org/10.1101/2025.05.07.652530.

wrdSi23 [eft-3p::TIR1:F2A:mTagBFP::tbb2 3' UTR:: loxP] I. Maintain at 16-20C. AID*::GFP tag inserted at N-terminus of endogenous rpoa-2 locus. This strain can be used for auxin-inducible degradation (AID) of RPOA-2 in somatic tissues in a set-2 mutant background. Reference: Mejia-Trujillo R, et al. bioRxiv 2025.05.07.652530; doi: https://doi.org/10.1101/2025.05.07.652530.

wrdSi23 [eft-3p::TIR1:F2A:mTagBFP::tbb2 3' UTR:: loxP] I. ieSi11 [syp-3p::EmGFP::syp-3::syp-3 3'UTR + Cbr-unc-119(+)] II. Maintain at 16-20C. AID*::GFP tag inserted at N-terminus of endogenous rpoa-2 locus. GFP::SYP-3 expression is readily detected in spermatocytes and oocytes in the germline, and localizes to the interface between paired homologous chromosomes during most of meiotic prophase. mKate2 tag inserted into the C-terminus of endogenous nucl-1 locus. Nucleolar mKate2 expression. This strain can be used for auxin-inducible degradation (AID) of RPOA-2 in somatic tissues. Reference: Mejia-Trujillo R, et al. bioRxiv 2025.05.07.652530; doi: https://doi.org/10.1101/2025.05.07.652530.

wrdSi23 [eft-3p::TIR1:F2A:mTagBFP::tbb2 3' UTR:: loxP] I. Maintain at 16-20C. AID*::GFP tag inserted at the C-terminus of the endogenous rpoa-1 locus. This strain can be used for auxin-inducible degradation (AID) of RPOA-1 and UNC-104 in somatic tissues. Reference: Mejia-Trujillo R, et al. bioRxiv 2025.05.07.652530; doi: https://doi.org/10.1101/2025.05.07.652530.

fphIs1 [aak-2Ap::aak-2A::GFP + unc-119(+)]. aak-2A isoform expressed with its own promoter in aak-2(ok524) background. Reference: Jeong JH, et al. Nat Commun. 2023 Jan 18;14(1):288. doi: 10.1038/s41467-023-35952-z. PMID: 36653384.

fphEx1 [aak-2Cp::aak-2C::GFP + unc-119(+)]. Pick wild-type (non-Unc) to maintain. aak-2C isoform expressed from its own promoter in aak-2(ok524) background. Reference: Jeong JH, et al. Nat Commun. 2023 Jan 18;14(1):288. doi: 10.1038/s41467-023-35952-z. PMID: 36653384.

fphEx2 [aak-2A/Cp::aak-2A/C::GFP + unc-119(+)]. Pick wild-type (non-Unc) to maintain. aak-2A and aak-2C isoforms expressed from their own promoter in aak-2(ok524) background. Reference: Jeong JH, et al. Nat Commun. 2023 Jan 18;14(1):288. doi: 10.1038/s41467-023-35952-z. PMID: 36653384.

fphEx3 [aak-2Ap::aak-2C::GFP + unc-119(+)]. Pick wild-type (non-Unc) to maintain. aak-2c isoform expressed from the aak-2a promoter in aak-2(ok524) background. Reference: Jeong JH, et al. Nat Commun. 2023 Jan 18;14(1):288. doi: 10.1038/s41467-023-35952-z. PMID: 36653384.

fphIs2 [unc-119p::aak-2A::GFP + unc-119(+)]. aak-2A isoform expressed from the neuronal unc-119 promoter in aak-2(ok524) background. Reference: Jeong JH, et al. Nat Commun. 2023 Jan 18;14(1):288. doi: 10.1038/s41467-023-35952-z. PMID: 36653384.

fphIs3 [rab-3p::aak-2A::GFP + unc-119(+)]. aak-2A isoform expressed from the neuronal rab-3 promoter in aak-2(ok524) background. Reference: Jeong JH, et al. Nat Commun. 2023 Jan 18;14(1):288. doi: 10.1038/s41467-023-35952-z. PMID: 36653384.

fphEx4 [vha-6p::aak-2A::GFP + unc-119(+)]. Pick wild-type (non-Unc) to maintain. aak-2A isoform expressed from the intestinal vha-6 promoter in aak-2(ok524) background. Reference: Jeong JH, et al. Nat Commun. 2023 Jan 18;14(1):288. doi: 10.1038/s41467-023-35952-z. PMID: 36653384.

H01G02.2. External left primer: TGCATCCCTTTGATTCCTTC. External right primer: AAACCTGGGCGCTTTTATTT. Internal left primer: GCAATCCTTGCTTGATCCAT. Internal right primer: TGATTGCAACGTTCCATGAT. Internal WT amplicon: 3033 bp. Deletion size: 1251 bp. Deletion left flank: AAACTCACTTTTGAAACATTCGGGACCATT. Deletion right flank: GATGAAGATCATGGAACGTTGCAATCAATT. This strain was provided by the C. elegans Reverse Genetics Core Facility at the University of British Columbia, which is part of the international C. elegans Gene Knockout Consortium, which should be acknowledged in any publications resulting from its use. URL: http://www.celeganskoconsortium.omrf.org.

ekIs2 contains [pie-1p::GFP::cyb-1 + unc-119(+)]. Translational fusion of CYB-1 expressed from the pie-1 promoter and including the pie-1 3'UTR. GFP::CYB-1 expression in the proximal gonad, with staining disappearing in the zygote. Maintain at 25°C.

C30G12.1 Homozygous. No overt morphological or behavioral abnormalities. 1286 bp deletion. The region of cosmid C30G12 that is deleted is 39,238 - 40,523 bps (inclusive). The deletion includes an ectopic 5 bp sequence, GGTTA. The sequence crossing the deletion for ok910 is: ....GCCATGGTTAAAAGT GGTTA AAAAATTCAGTATAT... This deletion was generated by the C. elegans Gene Knockout Project at OMRF, which is part of the International C. elegans Gene Knockout Consortium, which should be acknowledged in any publication resulting from its use. http://www.mutantfactory.ouhsc.edu/

ekEx25 [wrt-2p::CDC-6::GFP + rol-6(su1006)]. Pick Rollers to maintain the extrachromosomal array.

Temperature-sensitive. Maintain at 15C. Animals form germline tumors that prevent fertility at restrictive temerature (25C). This is the first strain reported to be used for the isolation of germ cells for in vitro culture. This strain allows germ cells to remain viable for longer periods than other tumorous mutant strains tested. Reference: Chaudhari SH, et al. Dev Cell. 2016 Jul 11;38(1):33-46.

Temperature-sensitive. Maintain at 15C. or545 homozygotes produce 99.9% dead embryos at 26C. or545 is a G138R mutation in the DSL repeat. Reference: Chuang CH, et al. G3 (Bethesda). 2025 Sep 26:jkaf229. doi: 10.1093/g3journal/jkaf229. PMID: 41004705.

Appears WT. orIs1 [pie-1p::GFP::mei-1 + unc-119(+)]. Maintain at 20C or above. Below 20C the GFP signal turns off.

ruIs32 [pie-1p::GFP::H2B + unc-119(+)] III. ruIs57 [pie-1p::GFP::tubulin + unc-119(+)]. Maintain at 15C. Temperature-sensitive embryonic-lethal at restrictive temperature of 26C; viable at permissive temperature of 15C. Reversed AP polarity axis at restrictive temperature with his-11::GFP and tubulin::GFP expression. Reference: Keikhaee MR, et al. PLoS One. 2014 Sep 4;9(9):e106484.

ruIs32 [pie-1p::GFP::H2B + unc-119(+)] III. apo-5(or358) is temperature-sensitive embryonic lethal. 100% dead embryos when L4 larvae are shifted to 26.6C. A small percentage of embryos survive form L4 larvae shifted to 25-26C. or358 appears to be semi-dominant; L4 or358/+ heterozygotes shifted to 26C produce ~20% embryonic lethality. Maintain at 15C. References: Encalada SE, et al., Mol Biol Cell. 2005 Mar;16(3):1056-70. Strome S, et al. Mol Biol Cell. 2001 Jun;12(6):1751-64.

orEx1[act-2 promoter::GFP::act-2 genomic fusion + rol-6(su1006)]. Shows cytoplasmic and cortical ACT-2::GFP expression in early embryonic cells, in epidermal cells during embryonic elongation, and in body wall muscle cells and some neurons in adults. All expression is zygotic; no germline expression is detected for this trangene even though act-2 is maternally expressed. Maintain by picking Rollers.

Strain is homozygous viable due to redundancy of act- and act-3 genes. AT 15C, all embyros produced by homozygous mothers hatch; at 26C, 88% of embryos hatch. Deletion which removes 544 nucleotides of act-2 plus the predicted 3' UTR and 705 nucleotides 3' of that. This removes 163/376 amino acids of the act-2 sequence (calculated with ATG methionine included). Sequence of deletion is (text inside of slashes is deleted, with 5' and 3' sequences shown): (exon#2)5'....gtgaaatcgtgcgtgacatc/aaggagaagctttgtt........ ...tggatagacattggtgt/gcgcactccttctggat.....3'(872 nucleotides from stop codon). Removes 489/1131 coding base pairs, beginning in second exon and extending beyond the 3' UTR.

orIs17 [dhc-1p::GFP::dhc-1 + unc-119(+)]. N-terminal-tagged GFP::dhc-1 fusion driven by the dhc-1 promoter. Reference: O'Rourke SM, et al. Nat Cell Biol. 2010 Dec;12(12):1235-41.

orIs14 [pie-1p::GFP::efa-6c::pie-1 3'UTR + unc-119(+)]. pie-1 promoter-driven N-terminal GFP fusion to EFA-6 isoform C. Reference: O'Rourke SM, et al. Nat Cell Biol. 2010 Dec;12(12):1235-41.

orIs19 [pie-1::GFP::dylt-1 + unc-119(+)]. Superficially wild-type. Reference: O'Rourke SM, et al. PLoS Genet. 2007 Aug;3(8):e128.

let-99(or204) is temperature-sensitive, maternal-effect, embryonic-lethal. Nearly completely penetrance of lethality at 26C. Viable at 15C. Maintain at 15C. Reference: Goulding MB, et al. J Cell Biol. 2007 Sep 24;178(7):1177-91.

orIs20 [pie-1p::GFP::MOE]. Maintain under normal conditions.

ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV. orIs13 [pie-1p::GFP::npp-22(genomic)::pie-1 3'UTR + unc-119(+)]. GFP-tagged NPP-22. Superficially wild-type. Might still carry unc-119(ed3) in background. [NOTE: the ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV transgene was previously annotated as itIs37 in this strain. The correct name of the transgene is ltIs37 and not itIs37.] Reference: O'Rourke SM, et al. PLoS Genet. 2007 Aug;3(8):e128.

Strain is egg-laying defective. Homozygous mex-3(or20) is a non-conditional maternal effect lethal: worms fill up with dead eggs. Heterozygotes bag with 11/16 dead embryos and larvae. About 10% of worms can lay eggs and be mated into for outcrossing. The mex-3(or20) mutant embryos produce excess body wall muscle anteriorly.

or28 is a non-conditional maternal-effect embryonic lethal mutant ; the anterior pharynx is absent. and embryonic lethality is 100% penetrant. Pick single WT heterozygous hermaphrodites to maintain strain; these hets fill up with a mix of dead embryos and larvae [11/16 dead embryos due to aneuploidy from translocation segregation and lethal homozygous hT2; vulvaless due to homozygous lin-2(e1309) mutation; about 10% of lin-2(e1309) worms are leaky and lay eggs/can be mated into]. The homozygous or28 hermaphrodites fill up with dead embryos. The lin-2 background helps to score embryonic lethality for both heterozygotes and or28 homozygotes. or28 is a G to D mis-sense mutation at amino acid position 123.

or28 is a non-conditional maternal-effect embryonic lethal mutant ; the anterior pharynx is absent. and embryonic lethality is 100% penetrant. Pick single WT heterozygous hermaphrodites to maintain strain; these hets fill up with a mix of dead embryos and larvae [11/16 dead embryos due to aneuploidy from translocation segregation and lethal homozygous hT2; vulvaless due to homozygous lin-2(e1309) mutation; about 10% of lin-2(e1309) worms are leaky and lay eggs/can be mated into]. The homozygous or28 hermaphrodites fill up with dead embryos. The lin-2 background helps to score embryonic lethality for both heterozygotes and or28 homozygotes. Strain produces a lot of males due to him-8(ec56). or28 is a G to D mis-sense mutation at amino acid position 123.

Recessive, temperature-sensitive embryonic lethal mutant . Maintain at 15C, most embryos will hatch. Nearly all embryos fail to hatch at 25C. Centrosomes are detached from nuclear spindle envelope in one-cell stage embryos; sometimes reattach to pronuclei; sometimes stay unattached throughout prophase until nuclear envelope breakdown. Mis-sense mutation in Q367P. Hook family member. Localizes to nuclear envelope and centrosomes; interacts with SUN domain proteins at nuclear envelope and interacts with dynein.

Heterozygotes are Unc. Segregates Uncs (dpy-18 pie-1; skn-1/DnT1; eDp6), Dpy non-Uncs (dpy-18 pie-1; skn-1 with no Dp) which give only dead embryos, and DpyUncs (dpy-18 pie-1; skn-1/DnT1 with no Dp) which give only dead eggs, WT looking (dpy-18 pie-1; skn-1; eDp6) which give only dead embryos, and dead eggs.