Search Strains

reySi1 [mex-5p::Nb::mKate2::nmy-2 3'UTR] II. Strain expressing an anti-ALFA tag nanobody coupled to the red fluorophore mKate2. Can be used for in vivo detection of ALFA-tagged proteins. Transgene inserted into ttTi5605 via CRISPR/Cas9. Red fluorescence in gonads and early embryos. Reference: Quintin S, et al. 2025. microPublication Biology. 10.17912/micropub.biology.001542.

armEx196 [mex-5p::unc-130::GFP::tbb-2 3'UTR + Cbr-unc-119(+)]. Pick non-Unc to maintain. unc-119(ed3) was crossed into JU258, the niDf199IV deletion was confirmed by PCR, and these Unc worms were used for bombardment. JU258 worms lack specific 21U-RNAs normally present in N2 worms due to deletion of the niDF199 locus. Reference: Cecere G, et al. Mol Cell. 2012 Sep 14;47(5):734-45. Reference: Cecere G, et al. Mol Cell. 2012 Sep 14;47(5):734-45.

jamSi2 [mex-5p::rde-1(+)] II. mex-5p::rde-1(+) inserted into ttTi5605 on LG II. Tissue-specific RNAi rescue allows silencing in germline and intestine. Reference: Marre JA, et al. Proc Natl Acad Sci USA. 2016.

juSi164 [mex-5p::HIS-72::miniSOG + Cbr-unc-119(+)] III. wtfIs263 [rab-3p::AI::ChR2(H134R)::unc-54 3'UTR + rab-3p::AI::Voltron::unc-54 3'UTR + rab-3p::his-24::tagBFP::unc-54 3'UTR]. Keep plates covered to avoid unnecessary exposure to light. Pan-neuronal expression of ChR2 (H134R) along with Voltron volatage indicator and nuclear-localized tagBFP. Reporter construct contains an artificial intron (AI). Reference: Sharma AK, et al. Genetics 2024 May 11:iyae077. doi: 10.1093/genetics/iyae077 PMID: 38733622.

juSi164 [mex-5p::HIS-72::miniSOG + Cbr-unc-119(+)] III. wtfEx296 [rab-3p::AI::gur-3G::unc-54 3'UTR + rab-3p::AI::prdx-2G::SL2::his-24::tagRFP::unc-54 3'UTR + rab-3p::his-24::GCaMP6s::unc-54 3'UTR]. Pick RFP+ to maintain. Keep plates covered to avoid unnecessary exposure to light. Worms expressing a purple light-sensitive optogenetic protein system: pan-neuronal expression of GUR-3 and PRDX-2 with nuclear-localized tagRFP and GCaMP6s. Reporter construct contains an artificial intron (AI). Reference: Sharma AK, et al. Genetics 2024 May 11:iyae077. doi: 10.1093/genetics/iyae077 PMID: 38733622.

juSi164 [mex-5p::HIS-72::miniSOG + Cbr-unc-119(+)] III. wtfEx315 [5xQUAS::(delta)pes-10P::AI::gur-3G::unc-54 3'UTR + 5xQUAS::(delta)pes-10P::AI::prdx-2G::unc-54 3'UTR + rab-3p::AI::QF+hGR::unc-54 3'UTR + unc-122p::GFP]. Pick animals with GFP+ coelomocytes to maintain. Worms expressing a purple light-sensitive optogenetic protein system: pan-neuronal expression of GUR-3 and PRDX-2. Reporter construct contains an artificial intron (AI). Reference: Sharma AK, et al. Genetics 2024 May 11:iyae077. doi: 10.1093/genetics/iyae077 PMID: 38733622.

juSi164 [mex-5p::HIS-72::miniSOG + Cbr-unc-119(+)] III. wtfIs335 [5xQUAS+(delta)pes-10p::AI::eTsChR::unc-54 3'UTR + rab-3p::AI::QF+hGR::SL2::tagBFP::unc-54 3'UTR + rab-3p::his-24::tagRFP::unc-54 3'UTR + rab-3p::his-24::GCaMP6s::unc-54 3'UTR]. Keep plates covered to avoid unnecessary exposure to light. Pan-neuronal eTsChR on activation using dex treatment via QF+hGR. Worms also express calcium sensing fluorescence protein- GCaMP6s in nuclei of each neurons. Reporter construct contains an artificial intron (AI). Reference: Sharma AK, et al. Genetics 2024 May 11:iyae077. doi: 10.1093/genetics/iyae077 PMID: 38733622.

juSi164 [mex-5p::HIS-72::miniSOG + Cbr-unc-119(+)] III. wtfIs458 [mec-4::Chrimson4.2::SL2::mCherry::unc-54 3' UTR + unc-122::GFP]. Maintain in the covered box to avoid unnecessary exposure to ambient light. Upon blue light treatment (460 nm LED light for 30 min at 4 Hz with 2 mW/mm2), Histone-miniSOG in the germline can induce heritable mutations. Transgenic animals express light-gated ion channel Chrimson and a fluorescent protein mCherry in mechanosensory neurons alongside GFP in coelomocytes. Reference: Liu M, et al. PLoS Biol. 2022 Jan 28;20(1):e3001524. doi: 10.1371/journal.pbio.3001524. PMID: 35089912.

juSi164 [mex-5p::HIS-72::miniSOG + Cbr-unc-119(+)] III. wtfIs483 [rab-3p::AI::lite-1G::unc-54 3'UTR + rab-3p::AI::prdx-2G::SL2::his-24::tagRFP::unc-54 3'UTR + rab-3p::his-24::GCaMP6s::unc-54 3'UTR]. Keep plates covered to avoid unnecessary exposure to light. Pan-neuronal expression of a purple/violet light-sensitive optogenetic protein system LITE-1 and PRDX-2 with nuclear-localized tagRFP and GCaMP6s. Reporter construct contains an artificial intron (AI). Reference: Sharma AK, et al. Genetics 2024 May 11:iyae077. doi: 10.1093/genetics/iyae077 PMID: 38733622.

vizSi20 [mex-5p::GFP::gsk-3 (K65A,E77A,D161A,D180A)::tbb-2 3’UTR + unc-119(+)] II. Superficially wild-type. vizSi20 was inserted into Chr II ttTi5605 using MosSci. GSK-3 cDNA was rendered kinase dead by replacing K65, E77, D161 and D180 to alanine. The transgene does not rescue gsk-3 sterility or embryonic lethality defects. Reference: Furuta T, et al. Development. 2018 May 14;145(10). pii: dev161042. doi: 10.1242/dev.161042.

mjIs134 [mex-5p::GFP::(Gly)5Ala::his-58::tbb-2 3'UTR + Cbr-unc-119(+)] II. Germ granule defective. ~30% sterility, maintain by picking gravid adults with visible embryos. Nuclear GFP expression in the germline. Reference: Lev I, et al. Curr Biol. 2019 Sep 9;29(17):2880-2891.e4. PMID: 31378614

mjIs134 [mex-5p::GFP::(Gly)5Ala::his-58::tbb-2 3'UTR + Cbr-unc-119(+)] II. Maintain at 15C. Heritable RNAi deficient, Mortal germline (Mrt) at 25C. Expressing nuclear GFP in the germline. Reference: Lev I, et al. Curr Biol. 2019 Sep 9;29(17):2880-2891.e4. PMID: 31378614

mjIs134 [mex-5p::GFP::(Gly)5Ala::his-58::tbb-2 3'UTR + Cbr-unc-119(+)] II. Maintain at 15C. Heritable RNAi deficient, germ granule defective, high sterility. Expresses nuclear GFP in the germline. Reference: Lev I, et al. Curr Biol. 2019 Sep 9;29(17):2880-2891.e4. PMID: 31378614

mjIs134 [mex-5p::GFP::(Gly)5Ala::his-58::tbb-2 3'UTR + Cbr-unc-119(+)] II. N-terminal Auxin-Inducible AID-1* and HA tag inserted into the endogenous hrde-1 locus. GFP fluorescence in germline (mex-5::gfp). Control strain for BFF69; does not carry TIR1 transgene necessary for the degradation. hrde-1(pig6) crRNA sequence: CAUAAUUUUGUCGAGCAAGU. Reference: Toker IA, et al. Dev Cell. 2022 Feb 7;57(3):298-309.e9. PMID: 35134343.

mjIs134 [mex-5p::GFP::(Gly)5Ala::his-58::tbb-2 3'UTR + Cbr-unc-119(+)] II. ieSi38 [sun-1p::TIR1::mRuby::sun-1 3'UTR + Cbr-unc-119(+)] IV. N-terminal Auxin-Inducible AID* and HA tag inserted into the endogenous hrde-1 locus. Germline-expressed TIR1 and germline GFP. Allows for the degradation of hrde-1 and heritable RNAi deficiency in the presence of auxin. hrde-1(pig6) crRNA sequence: CAUAAUUUUGUCGAGCAAGU. Reference: Toker IA, et al. Dev Cell. 2022 Feb 7;57(3):298-309.e9. PMID: 35134343.

bqSi711 [mex-5p::FLP::SL2::mNG + unc-119(+)] IV. Constitutive co-expression of codon-optimised FLP and fluorescent mNeonGreen in the germ line. Reference: Macias-Leon J & Askjaer P. (2018): Efficient FLP-mediated germ-line recombination in C. elegans. Micropublication:biology. Dataset. https://doi.org/10.17912/W2G66S

Missense mutations D1135L and S1136W, G1218K and E1219Q, and R1335Q and T1337R were introduced on the Cas9 gene at EG9615 strain, to cause endogenous expression of the Cas9 variant SpG. SpG is efficient for CRISPR on NGN PAM sites. Reference: Vicencio J, et al. Nature Communication, 2022. May 12;13(1):2601. doi: 10.1038/s41467-022-30228-4.

juSi164 [mex-5p::HIS-72::miniSOG + Cbr-unc-119(+)] III. Maintain in the covered box to avoid unnecessary exposure to ambient light. Wild-type behavior in movement, mating, growth and brood size. Upon blue light treatment (460 nm LED light for 30 min at 4 Hz with 2 mW/mm2), Histone-miniSOG in the germline can induce heritable mutations. Wild-type behavior in movement, mating, growth and brood size. MosSCI insertion into oxTi444 on Chr. III. Reference: Noma K & Jin Y. Nature Communications, 2015.

oxSi1213 [loxP::mex-5p::FLP(G5D)::SL2::mNeongreen::FRT3]; inserted into jsSi1579. Generated by RMCE. Germline expressed Flp recombinase with transpliced mNeonGreen expression reporter. Animals have bright green fluorescent germlines and can recombine FRT sites with high efficiency. Out-crossed once with N2 to remove Flp from background. Reference: Hefel A, et al. bioRxiv. 2026 Jan 15:2026.01.15.699741. doi: 10.64898/2026.01.15.699741. PMID: 41648400.

oxSi1215 [mex-5p::wrmCre::2xNLS::SL2::mNeonGreen::glh-2 3'UTR + Cbr-unc-119(+)]; inserted into ttTi5605. Germline expressed Cre recombinase with transpliced mNeonGreen expression reporter. Animals have bright green fluorescent germlines and recombines loxP sites with high efficiency. Out-crossed once with N2 to remove unc-119(ed3) from the background. Reference: Hefel A, et al. bioRxiv. 2026 Jan 15:2026.01.15.699741. doi: 10.64898/2026.01.15.699741. PMID: 41648400.

oxSi1356 [attL::loxP::mex-5p::B3::let-858 3'UTR::glh-2 3'UTR::mNeongreen::SL2::PhiC31::mex-5p::rox::attR]; inserted into oxSi1270. Generated by PhIT. Germline expression of PhiC31 and B3 recombinases arranged in a convergent (tail-to-tail) manner. Unc; can be rescued by expression of the C. briggsae unc-119 gene (Cbr-unc-119). Out-crossed once with N2 to remove Flp from background. Reference: Hefel A, et al. bioRxiv. 2026 Jan 15:2026.01.15.699741. doi: 10.64898/2026.01.15.699741. PMID: 41648400.

oxSi1228 [loxP::mex-5p::vika::SL2::mNeongreen::FRT3]; inserted into jsSi1579. Generated by RMCE. Germline expressed Vika recombinase with transpliced mNeonGreen expression reporter. Animals have green fluorescent germlines and can recombine vox sites with low efficiency. Out-crossed once with N2 to remove Flp from background. Reference: Hefel A, et al. bioRxiv. 2026 Jan 15:2026.01.15.699741. doi: 10.64898/2026.01.15.699741. PMID: 41648400.

oxSi1190 [loxP::mex-5p::Bxb1::tbb-2UTR::FRT3]. Inserted into jsSi1579. Generated by RMCE. Germline expressed Bxb1 integrase. Animals recombine Bxb1 attB and attP sites with low efficiency. Out-crossed once with N2 to remove Flp from background. Reference: Hefel A, et al. bioRxiv. 2026 Jan 15:2026.01.15.699741. doi: 10.64898/2026.01.15.699741. PMID: 41648400.

oxSi1284 [loxP::mex-5p::B3::SL2::mNeongreen::FRT3]; inserted into jsSi1579. Generated by RMCE. Germline expressed B3 recombinase with transpliced mNeonGreen expression reporter. Animals have green fluorescent germlines and can recombine B3RT sites. Out-crossed once with N2 to remove Flp from background. Reference: Hefel A, et al. bioRxiv. 2026 Jan 15:2026.01.15.699741. doi: 10.64898/2026.01.15.699741. PMID: 41648400.

oxSi1347 [mex-5p::PhiC31(PATC)::sl2::mNeongreen]; inserted into RMCE landing site jsSi1579 adjacent to ttTi5605 II. Homozygous-viable balancer for attB IV marked with myo-2p::Venus. PhiC31 integrase and mNeonGreen expressed in the germline. Reference: Rich MS, et al. bioRxiv. 2025 Nov 12:2025.11.11.687718. doi: 10.1101/2025.11.11.687718. PMID: 41293020.

oxSi1347 [mex-5p::PhiC31(PATC)::sl2::mNeongreen]; inserted into RMCE landing site jsSi1579 adjacent to ttTi5605 II. Homozygous-viable balancer for attB I marked with myo-2p::Venus and Unc. PhiC31 integrase and mNeonGreen expressed in the germline. Reference: Rich MS, et al. bioRxiv. 2025 Nov 12:2025.11.11.687718. doi: 10.1101/2025.11.11.687718. PMID: 41293020.

jsSi1623 [loxP::mex-5p::PhiC31::sl2::mNG::glh-2 3’ FRT3] IV. Maintain by picking WT GFP+. Heterozygotes are WT GFP+ and segregate WT GFP+, dead eggs (mnDf61 homozygotes) and paralysed DpyUnc GFP+ (mnC1 homozygotes). Heterozygous balancer stock for attB II marked with myo-2p::GFP. Transgene expresses phiC31 and mNG in the germline, facilitates integration of extrachromosomal arrays at high efficiency. References: Nonet ML. bioRxiv 2024.03.01.583017. Rich MS, et al. bioRxiv. 2025 Nov 12:2025.11.11.687718. doi: 10.1101/2025.11.11.687718. PMID: 41293020.

oxSi487 [mex-5p::mCherry::H2B::tbb-2 3'UTR::gpd-2 operon::GFP::H2B::cye-1 3'UTR + unc-119(+)] II. MosSCI insertion into ttTi5605 site on Chr II. unc-119 rescue, bright nuclear GFP and nuclear mCherry fluorescence in germline.

oxSi1091 [mex-5p::Cas9 (+ smu-2 introns)::tbb-2 3'UTR + unc-119(+)] inserted into ttTi5605 II. Superficially wild-type. Reference: Schwartz ML, et al. High-efficiency CRISPR gene editing in C. elegans using Cas9 integrated into the genome. bioRxiv 2021.08.03.454883; doi: https://doi.org/10.1101/2021.08.03.454883

oxSi1106 [mex-5p::Cas9(+smu-2 introns)::tbb-2 3'UTR + lox2272] II. Unc. Integrated Cas9 transgene inserted into ttTi5605 MosSci site. Reference: Schwartz ML, et al. High-efficiency CRISPR gene editing in C. elegans using Cas9 integrated into the genome. bioRxiv 2021.08.03.454883; doi: https://doi.org/10.1101/2021.08.03.454883

oxTi1126 [mex-5p::Cas9(+smu-2 introns)::tbb-2 3'UTR + hsp-16.41p::Cre::tbb-2 3'UTR + myo-2p::2xNLS::cyOFP::let-858 3'UTR + lox2272] III. Knock-in into previously modified unc-119(ox819) endogenous locus. Cas9 insertion marked with myo-2p::cyOFP (cyan-excitable Orange Fluorescent Protein), a long-Stokes-shift fluorescent protein that is spectrally separable from common green and red fluorophores. The Cas9 transgene was optimized for germline expression by including 4 large PATC-rich introns from smu-2. Lower activity than other Cas9 strains, but useful because Cas9, Cre, and unc-119 are in a single unit. Reference: Schwartz ML, et al. High-efficiency CRISPR gene editing in C. elegans using Cas9 integrated into the genome. bioRxiv 2021.08.03.454883; doi: https://doi.org/10.1101/2021.08.03.454883

oxTi1127 [mex-5p::Cas9(+smu-2 introns)::tbb-2 3'UTR + hsp-16.41p::Cre::tbb-2 3'UTR + myo-2p::2xNLS::cyOFP::let-858 3'UTR + lox2272] III. Inserted into F53A2.9. High Cas9 activity. Integrated Cas9 transgene linked to unc-119(ox819). Cas9 insertion marked with myo-2p::cyOFP (cyan-excitable Orange Fluorescent Protein), a long-Stokes-shift fluorescent protein that is spectrally separable from common green and red fluorophores. Reference: Schwartz ML, et al. High-efficiency CRISPR gene editing in C. elegans using Cas9 integrated into the genome. bioRxiv 2021.08.03.454883; doi: https://doi.org/10.1101/2021.08.03.454883

oxTi1127 [mex-5p::Cas9(+smu-2 introns)::tbb-2 3'UTR + hsp-16.41p::Cre::tbb-2 3'UTR + myo-2p::2xNLS::cyOFP::let-858 3'UTR + lox2272] III. Inserted into F53A2.9. High Cas9 activity. Superficially wild-type. Cas9 insertion marked with myo-2p::cyOFP (cyan-excitable Orange Fluorescent Protein), a long-Stokes-shift fluorescent protein that is spectrally separable from common green and red fluorophores. Reference: Schwartz ML, et al. High-efficiency CRISPR gene editing in C. elegans using Cas9 integrated into the genome. bioRxiv 2021.08.03.454883; doi: https://doi.org/10.1101/2021.08.03.454883

oxTi1120 [mex-5p::Cas9(+smu-2 introns)::tbb-2 3'UTR + hsp-16.41p::Cre::tbb-2 3'UTR + lox2272] I. Inserted into W01A8.6. The Cas9 transgene was optimized for germline expression by including 4 large PATC-rich introns from smu-2. Reference: Schwartz ML, et al. High-efficiency CRISPR gene editing in C. elegans using Cas9 integrated into the genome. bioRxiv 2021.08.03.454883; doi: https://doi.org/10.1101/2021.08.03.454883

oxTi1128 [mex-5p::Cas9(+smu-2 introns)::tbb-2 3'UTR + hsp-16.41p::Cre::tbb-2 3'UTR + myo-2p::2xNLS::cyOFP::let-858 3'UTR + lox2272]) I. Cas9 insertion marked with myo-2p::cyOFP (cyan-excitable Orange Fluorescent Protein), a long-Stokes-shift fluorescent protein that is spectrally separable from common green and red fluorophores. Inserted into W01A8.6. Reference: Schwartz ML, et al. High-efficiency CRISPR gene editing in C. elegans using Cas9 integrated into the genome. bioRxiv 2021.08.03.454883; doi: https://doi.org/10.1101/2021.08.03.454883

oxTi1128 [mex-5p::Cas9(+smu-2 introns)::tbb-2 3'UTR + hsp-16.41p::Cre::tbb-2 3'UTR + myo-2p::2xNLS::cyOFP::let-858 3'UTR + lox2272]) I. Outcrossed to remove unc-119 mutation. Superficially wild-type. Cas9 insertion marked with myo-2p::cyOFP (cyan-excitable Orange Fluorescent Protein), a long-Stokes-shift fluorescent protein that is spectrally separable from common green and red fluorophores. Inserted into W01A8.6. Reference: Schwartz ML, et al. High-efficiency CRISPR gene editing in C. elegans using Cas9 integrated into the genome. bioRxiv 2021.08.03.454883; doi: https://doi.org/10.1101/2021.08.03.454883

oxTi1121 [mex-5p::Cas9(+smu-2 introns)::tbb-2 3'UTR + hsp-16.41p::Cre::tbb-2 3'UTR + lox2272]) V. The Cas9 transgene was optimized for germline expression by including 4 large PATC-rich introns from smu-2. Inserted into W03F9.11. Reference: Schwartz ML, et al. High-efficiency CRISPR gene editing in C. elegans using Cas9 integrated into the genome. bioRxiv 2021.08.03.454883; doi: https://doi.org/10.1101/2021.08.03.454883

egxSi100 [mex-5p::GFP::pos-1 + unc-119(+)] II. Single-copy transgene expressing GFP::POS-1. Reference: Han et al, Current Biology 2017.

egxSi101 [mex-5p::GFP::pos-1(F121N & F164N) + unc-119(+)] II. Single-copy transgene expressing mutated POS-1 with GFP tag. GFP::POS-1 is uniformly distributed in the one-cell zygote. Reference: Han et al, Current Biology 2017.

egxSi100 [mex-5p::GFP::pos-1 + unc-119(+)] II. Single-copy transgene expressing GFP::POS-1. mex-5(egx1[F294N, F339N]) modifies the endogenous mex-5 locus to disrupt zinc finger motifs. Reference: Han et al, Current Biology 2017.

egxSi109 [mex-5p::GFP::pos-1(S199A, S210A, S216A, S237A & T242A) + unc-119(+)] II. Single-copy transgene expressing mutated POS-1 with GFP tag. GFP::POS-1 is uniformly distributed in the cytoplasm of the one-cell zygote. Reference: Han et al, Current Biology 2017.

egxSi110 [mex-5p::GFP::pos-1(S199D, S210D, S216D, S237D & T242D) + unc-119(+)] II. Single-copy transgene expressing mutated POS-1 with GFP tag. GFP::POS-1 is uniformly distributed in the cytoplasm of the one-cell zygote. Reference: Han et al, Current Biology 2017.

egxSi116 [mex-5p::GFP::mex-5(F294N, F339N) + unc-119(+)] II. Modified MEX-5::GFP forms a much weaker gradient in the cytoplasm of the one-cell zygote than wild type. Reference: Han et al, Current Biology 2017.

egxSi100 [mex-5p::GFP::pos-1 + unc-119(+)] II. Single-copy transgene expressing GFP::POS-1 forms a weaker gradient in the cytoplasm of the one-cell zygote than in wild-type. Reference: Han et al, Current Biology 2017.

egxSi126 [mex-5p::hsp-3(aa1-19)::halotag::HDEL::pie-1 3’UTR + unc-119(+)] I. Superficially wild-type. Stable expression of Halotag in the ER lumen in the germline and embryos. Reference: Fan X, et al. G3 (accepted).

egxSi100 [mex-5p::GFP::pos-1 + unc-119(+)] II. Single-copy transgene expressing GFP::POS-1. Reference: Han et al, Current Biology 2017.

egxSi136 [mex-5p::tomm-20::halotag::pie-1 3’UTR + unc-119(+)] II. Superficially wild-type. Stable expression of TOMM-20 tagged with Halo on the outer membranes of mitochondria in the germline and embryos. Reference: Fan X, et al. G3 (accepted).

egxSi144 [mex-5p::cox-4::halotag::pie-1 3’UTR + unc-119 (+)] II. Superficially wild-type. Stable expression of COX-4 tagged with Halo in the mitochondrial matrix in the germline and embryos. Reference: Fan X, et al. G3 (accepted).

egxSi145 [mex-5p::hsp-3(aa1-19)::halotag::HDEL::pie-1 3’UTR + unc-119(+)] II. Superficially wild-type. Stable expression of Halotag in the ER lumen in the germline and embryos. Reference: Fan X, et al. G3 (accepted).

egxSi136 [mex-5p::tomm-20::halotag::pie-1 3’UTR + unc-119(+)] II. GFP and 3xFLAG tags inserted into endogenous cox-4 locus to create a C-terminal translational GFP fusion. Outer membranes are stably labeled with the TOMM-20::Halotag transgene, and the mitochondria matrix are labeled with COX-4::GFP. Reference: Fan X, et al. G3 (accepted).