Search Strains

ieSi57 [eft-3p::TIR1::mRuby::unc-54 3'UTR + Cbr-unc-119(+)] II. Single copy transgene inserted into chromosome II (oxTi179) expressing modified Arabidopsis thaliana TIR1 tagged with mRuby in the soma. Endogenous osm-6 locus tagged with GFP and AID allows for inducible cilia disruption upon application of auxin. Reference: Varandas KC, et al. Nat Commun. 2025 Jan 2;16(1):79. doi: 10.1038/s41467-024-55674-0. PMID: 39747235.

ccIs55 [unc-54::lacZ + sup-7(st5)] V. Strain PD55 is transformed with plasmid pPD9.10 (which has a non-nuclear unc-54::lacZ fusion and a copy of the sup-7(st5) gene).

alg-1(ap423 [3xflag::gfp::alg-1]) X. ALG-1 tagged at N-terminal with 3xFLAG:GFP at endogenous locus, verified by western blot and fluorescence microscopy. Reference: Aalto AP, et al. PLoS Genet. 2018 Jun 21;14(6):e1007379.

alg-2(ap431[3xflag::mKate2::alg-2]) II. ALG-2 tagged at N-terminal with 3xFLAG:mKate2 at endogenous locus, verified by western blot and fluorescence microscopy. Reference: Aalto AP, et al. PLoS Genet. 2018 Jun 21;14(6):e1007379.

alg-2(ap431[3xflag::mKate2::alg-2]) II. alg-1(ap423[3xflag::gfp::alg-1]) X. Derived from crossing PQ530 and PQ582 strains, verified by fluorescence microscopy. Reference: Aalto AP, et al. PLoS Genet. 2018 Jun 21;14(6):e1007379.

zjIs5 [gst-4p::tdTomato::unc-54 3'UTR + unc-119(+)] II. Single copy insertion into ttTi5605 II. Fluorescence is dim; culture on 2-3 mM acrylamide to increase brightness. Reference: Tang L, et al. G3 (Besthesda). 2015 Dec 28;6(3):551–558. doi: 10.1534/g3.115.023010 PMID: 26715089.

ieSi57 [eft-3p::TIR1::mRuby::unc-54 3'UTR + Cbr-unc-119(+)] II. AID* tag inserted into endogenous daf-2 locus. ieSi57 is a single-copy transgene insertion into chromosome II (oxTi179) expressing modified Arabidopsis thaliana TIR1 tagged with mRuby in the soma. This strain can be used for auxin-inducible degradation (AID) of target proteins in somatic tissues. Reference: Venz R, et al. Elife. 2021 Sep 10;10:e71335. doi: 10.7554/eLife.71335. PMID: 34505574.

hutSi2642 [hsp-90p::mCherry::unc-54 3'UTR + Cbr-unc-119 (+)] II. Expresses a single copy of mCherry from hsp-90 promoter; construct utilizes the unc-54 terminator and 3'UTR. Can be used as a standard for multicolor imaging and quantitative microscopy. hsp-90 previously known as daf-21. Reference: Sands B, et al. 2018. Translational Medicine of Aging Volume 2, January 2018, Pages 1–10.

hutSi2661 [hsp-90p::eGFPT::unc-54 3'UTR + Cbr-unc-119 (+)] II. Expresses a single copy of mEGFP from hsp-90 promoter; construct utilizes the unc-54 terminator and 3'UTR. Can be used as a standard for multicolor imaging and quantitative microscopy. hsp-90 previously known as daf-21. Reference: Sands B, et al. 2018. Translational Medicine of Aging Volume 2, January 2018, Pages 1–10.

uthSi17 [myo-3p::MLS::GFP::unc-54 3’UTR + Cbr-unc-119(+)] I. Single-copy insertion. MLS::GFP reporter uses myo-3 promoter and atp-1 mitochondrial localization sequence; localizes to mitochondrial matrix in body-wall muscle cells. Derived by out-crossing parental strain AGD1664 (EG6701 background) to N2. Reference: Kim J, et al. J Vis Exp. 2025 Jan 17:(215). doi: 10.3791/67610. PMID: 39895615.

uthSi83 [col-19p::MLS::GFP(65C)::unc-54 3'UTR + Cbr-unc-119(+)] I. Single-copy insertion. MLS::GFP reporter uses col-19 promoter and atp-1 mitochondrial localization sequence; localizes to mitochondrial matrix in hypodermal cells beginning in late L4 stage. Derived by out-crossing parental strain AGD2837 (EG6701 background) to N2. Reference: Kim J, et al. J Vis Exp. 2025 Jan 17:(215). doi: 10.3791/67610. PMID: 39895615.

uthSi80 [vha-6p::MLS::GFP(65C)::unc-54 3'UTR + Cbr-unc-119(+)] IV. Single-copy insertion. MLS::GFP reporter uses vha-6 promoter and atp-1 mitochondrial localization sequence; localizes to mitochondrial matrix in intestinal cells. Derived by out-crossing parental strain AGD2805 (EG6703 background) to N2. Reference: Kim J, et al. J Vis Exp. 2025 Jan 17:(215). doi: 10.3791/67610. PMID: 39895615.

uthSi7 [myo-3p::LifeAct::mRuby::unc-54 3'UTR, Cbr-unc-119(+)] IV. Single-copy insertion of LifeAct::mRuby labels F-actin in body wall muscle cells. Out-crossed to N2. Reference: Higuchi-Sanabria R, et al. Mol Biol Cell. 2018 Oct 15;29(21):2522-2527. doi: 10.1091/mbc.E18-06-0362. PMID: 30133343

uthSi10 [col-19p::LifeAct::mRuby::unc-54 3'UTR + Cbr-unc-119(+)] IV. Integrated into cxTi10816. Single-copy insertion of LifeAct::mRuby labels F-actin in hypodermis beginning at late L4 stage. Out-crossed to N2. Reference: Higuchi-Sanabria R, et al. Mol Biol Cell. 2018 Oct 15;29(21):2522-2527. doi: 10.1091/mbc.E18-06-0362. PMID: 30133343

uthSi13 [gly-19p::LifeAct::mRuby::unc-54 3'UTR + Cbr-unc-119(+)] IV. Integrated into cxTi10816. Single-copy insertion of LifeAct::mRuby labels F-actin in intestinal cells. Out-crossed to N2. Reference: Higuchi-Sanabria R, et al. Mol Biol Cell. 2018 Oct 15;29(21):2522-2527. doi: 10.1091/mbc.E18-06-0362. PMID: 30133343

GFP tag inserted in endogenous unc-94 locus; specifically tags UNC-94A isoform. Green fluorescence is visible by compound microscopy as striations in body wall muscles, as elongated puncta in single-sarcomere (anal depressor, uterine, and vulval) muscles, as well as the cell bodies of two neurons. Not visible on fluorescent dissection microscopes. Modifcation of the endogenous myo-3 loci by the insertion of a trans-splicing ICR region and worm-optimized mCherry at region encoding the head-neck junction. Bright red fluorescence is visible as striations in body wall muscles and clusters in single-sarcomere (anal depressor, vuvla, uterine) muscles. Please contact Ryan Littlefield prior to publishing work using this strain.

rpl-13(ftw73[rpl-13::SL2::GFP::dpy-10]) I. Endogenous locus co-expresses GFP by trans-splicing using CRISPR-Cas9. Green fluorescence visible thoughout body by dissection fluorescence microscopy. D10 (dpy-10) CRISPR/Cas9 entry site is located downstream of the GFP coding region. Please contact Ryan Littlefield prior to publishing work using this strain.

GFP tag inserted in endogenous unc-94 locus; specifically tags UNC-94A isoform. Green fluorescence is visible by compound microscopy as striations in body wall muscles, as elongated puncta in single-sarcomere (anal depressor, uterine, and vulval) muscles, as well as the cell bodies of two neurons. Not visible on fluorescent dissection microscopes. Outcrossed parental strain RSL3 with N2. Please contact Ryan Littlefield prior to publishing work using this strain.

rab-3(ftw74[rab-3::SL2::LoxP::GFP::dpy-10::LoxP(inv)]) II. Endogenous locus co-expresses GFP by trans-splicing using CRISPR-Cas9. Green fluorescence visible in neurons by dissection fluorescence microscopy. dpy-10 CRISPR/Cas9 entry site is located downstream of the GFP coding region. Inverted LoxP sites flank the GFP::dpy-10 insert. Please contact Ryan Littlefield prior to publishing work using this strain.

rab-3(ftw79[rab-3::SL2::LoxP::GFP::NLS::3'UTR::Abeta(inv)::sigPep(inv)::T2A(inv)::wrmScarlet11(inv)::LoxP(inv)]) II. Modified endogenous rab-3 locus co-expresses stochastic, switchable cassette by trans-splicing using CRISPR-Cas9. Green fluorescence visible in neurons by dissection fluorescence microscopy. Inverted LoxP sites flank the GFP-NLS and inverted wrmScarlet11::T2A::signalPeptide::Abeta insert. Please contact Ryan Littlefield prior to publishing work using this strain.

Endogenous mlc-2 locus co-expresses LifeAct peptide fused to wrmScarlet. Myosin light chain is untagged. Bright red fluorescence in all muscles is visible by dissection fluorescence microscopy. Broad bands of fluorescence are visible in body wall muscle by confocal microscopy. Please contact Ryan Littlefield prior to publishing work with this strain.

Dumpy roller. Endogenous mlc-2 locus co-expresses LifeAct peptide fused to wrmScarlet. Myosin light chain is untagged. Bright red fluorescence in all muscles is visible by dissection fluorescence microscopy. Broad bands of fluorescence are visible in body wall muscle by confocal microscopy. Please contact Ryan Littlefield prior to publishing work with this strain.

Endogenous deb-1 locus tagged with mCherry. Bright red fluorescence in all muscles is visible by dissection fluorescence microscopy. Please contact Ryan Littlefield prior to publishing work with this strain.

unc-54(ftw19[NLS::mCherry::SL2::GFP::unc-54]) I. myo-3(ftw16[NLS::GFP::SL2::mCherry::myo-3]) V. Endogenous unc-54 locus tagged with NLS::GFP and mCherry using CRISPR/Cas9; coexpressed from the endogenous promoter using trans-splicing. Body muscles have bright green fluorescence within myofibrils and bright red nuclei visible by dissection fluorescence microscopy. Slow movement and slightly impaired egg-laying. Endogenous myo-3 locus tagged with NLS::GFP and mCherry using CRISPR/Cas9; coexpressed from the endogenous promoter using trans-splicing. Please contact Ryan Littlefield prior to publishing work using this strain.

GFP tag inserted in endogenous unc-94 locus; specifically tags UNC-94A isoform. mCherry tag inserted into endogenous tni-3 locus; GFP::NLS coexpressed from the endogenous tni-3 promoter via SL2 trans-splicing. GFP::UNC-94 is visible by compound microscopy as striations in body wall muscles, as elongated puncta in single-sarcomere (anal depressor, uterine, and vulval) muscles, as well as the cell bodies of two neurons. GFP::UNC-94 is not visible on fluorescent dissection microscopes. Please contact Ryan Littlefield prior to publishing work using this strain.

GFP tag inserted in endogenous unc-94 locus; specifically tags UNC-94A isoform. mCherry tag inserted into endogenous myo-3 locus; GFP::NLS coexpressed from the endogenous myo-3 promoter via SL2 trans-splicing. GFP::UNC-94 is visible by compound microscopy as striations in body wall muscles, as elongated puncta in single-sarcomere (anal depressor, uterine, and vulval) muscles, as well as the cell bodies of two neurons. GFP::UNC-94 is not visible on fluorescent dissection microscopes. Please contact Ryan Littlefield prior to publishing work using this strain.

Endogenous locus tagged with GFP using CRISPR/Cas9. NLS-mCherry co-expressed from the endogenous promoter using trans-splicing. Body muscles have bright green fluorescence within myofibrils and bright red nuclei visible by dissection fluorescence microscopy. Slow movement and slightly impaired egg-laying. Please contact Ryan Littlefield prior to publishing work using this strain.

Endogenous locus tagged with GFP using CRISPR/Cas9. Body muscles are visibly green by dissection fluorescence microscopy. WT movement and behavior. Please contact Ryan Littlefield prior to publishing work using this strain.

Endogenous locus tagged with mCherry using CRISPR/Cas9. Pharynx muscle is visibly red by dissection fluorescence microscopy. WT pumping and behavior. Please contact Ryan Littlefield prior to publishing work using this strain.

Endogenous locus tagged with GFP using CRISPR/Cas9. Body muscles are visibly green by dissection fluorescence microscopy except for the BWMs near the head. WT movement and behavior. Please contact Ryan Littlefield prior to publishing work using this strain.

Endogenous locus tagged with GFP using CRISPR/Cas9. Pharynx muscle is visibly green by dissection fluorescence microscopy. WT movement and behavior.

ftwEx1 [mlc-2p::GFP::SL2::mCherry::mlc-2]. Pick GFP+ to maintain. Extrachromosomal array expressing GFP and mCherry in muscles. Pharynx and bodywall muscles are visibly bright green by dissection fluorescence microscopy. WT movement and behavior. Please contact Ryan Littlefield prior to publishing work using this strain.

Severing and tagging of endogenous locus with trans-splicing ICR and GFP using CRISPR/Cas9. Pharynx and body muscles are green fluorescent and visible by dissection fluorescence microscopy. Severing is located upstream of kinase domain. Please contact Ryan Littlefield prior to publishing work using this strain.

Severing and tagging of endogenous unc-22 locus with trans-splicing ICR and GFP using CRISPR/Cas9. muIs252 [eft-3p::wrmScarlet1-10::unc-54 3'UTR + Cbr-unc-119(+)] II. Pharynx and body muscles are green and red fluorescent and visible by dissection fluorescence microscopy. Please contact Ryan Littlefield prior to publishing work using this strain.

zcIs4 [hsp-4::GFP] V. The identity of upr-1 remains unknown. Animals containing the zc6 mutation can be detected in an hsp-4::GFP background by following the bright green tails under fluorescence microscopy.

foxSi27 [pie-1p::tomm-20(gDNA)::mKate2::HA::tbb-2 3'UTR ] I. Single-copy MosSCI insertion into oxti185. Germline-specific expression of TOMM-20::mKate2::HA can be used for fluorescent identification of germline mitochondrial morphology and tissue-specific isolation of mitochondria. Reference: Ahier A, et al. Nature Cell Biol. 2018 Mar;20(3):352-360. doi: 10.1038/s41556-017-0023-x. PMID: 29358705.

mjIs144 [mex-5p::GFP::his-58::21UR-1target::tbb-2 3'UTR + unc-119(+)] II. piRNA sensor strain. Single copy inserted into ttTi5605 (MosSCI). Superficially wild-type with loss of piRNA sensor silencing in piRNA pathway mutants (e.g. prg-1). GFP is silenced in wild-type, expressed in piRNA pathway mutants and can be used as a simple read-out for piRNA pathway function. Reference: Bagijn MP, et al. Science. 2012 Aug 3;337(6094):574-8.

mjIs588 [mex-5p::GFP::his-58::21UR-1target::tbb-2 3'UTR + unc-119(+)] II. mjIs588 was derived by removing introns 2 and 3 from the construct used to generate the mjIs144 transgene. Single copy inserted into ttTi5605 (MosSCI). Superficially wild-type. mjIs588 GFP is silenced in wild-type animals and de-silenced in hrde-1 mutant animals. Reference: Akay A, et al. Dev Cell. 2017 Aug 7;42(3):241-255.e6.

Wild type. Low Tc1 copy number. Isolated in Madison, WI. Caenorhabditis elegans wild isolate (Tc1 pattern I?).

Wild type. Low copy Tc1 number. Isolated in Madison, WI. Caenorhabditis elegans wild isolate (Tc1 pattern I?).

A wild type C. elegans virtually indistinguishable from N2. Males mate with high efficiency, unlike Bergerac. High copy number of Tc1 elements. Active for Tc1 transposition and excision. Not temperature sensitive for growth (unlike Bergerac). See also WBPaper00001053 and WBG 10(2) 140-141 and 11(5) 60. Collected from soil in Madison, WI. Caenorhabditis elegans wild isolate (Tc1 pattern HCD).

udnSi38 [rab5p::rab-5] II. rab-5 [D135H]. rab-5 variant edit #2. Homozygous lethal rab-5 [D135H] mutation rescued by a single copy of wild-type rab-5 integrated into chromosome II at ttTi5605 site (II: 0.77). Maintain at 20 degrees. Reference: Huang et al. 2022. PMID: 35121658

udnSi38 [rab5p::rab-5] II. Maintain at 20 degrees. rab-5 [D135N] variant edit #2 with a single copy of wild-type rab-5 integrated into chromosome II at ttTi5605 site (II: 0.77). Homozygous lethal rab-5 [D135N] mutation balanced by tmC18. Balancer marked with myo-2p::mCherry. Heterozygotes are WT with pharyngeal mCherry fluorescence, and segregate mCherry + heterozygotes, non-mCherry rab-5 [D135N] homozygotes (L1 lethal), and Dpy mCherry+ tmC18 homozygotes. Pick fertile wild-type mCherry+ to maintain. [D135N]/ [D135N]; udnSi38/udnSi38 double homozygotes are lethal. Reference: Huang et al. 2022. PMID: 35121658

udnSi38 [rab5p::rab-5] II. rab-5[D135D]. rab-5 Control edit #1 with a single copy of wild-type rab-5 integrated into chromosome II at ttTi5605 site (II: 0.77). Maintain at 20 degrees. Wild-type looking.

jsSi1606 [loxP::unc-116(+)::FRT3] II. Single copy unc-116(+) insertion at the standard Chr II ttTi5605 mosSCI site. jsSi1579 is an RMCE landing pad inserted at a sgRNA site 45 bp from the ttTi5605 insertion site. It contains an rpl-28p::GFP reporter flanked by FRT and FRT3 sites and a loxP site (for more details about landing pads, see Nonet, 2020.Genetics or visit https://sites.wustl.edu/nonetlab/rmce/).

oaSi10 [par-5p::GFP::par-5::par-5 3' UTR + unc-119(+)] II. Maintain at 15C. Temperature-sensitive embryonic lethal. MOS single copy insertion of GFP-tagged par-5 under control of its endogenous regulatory sequences. Reference: Mikl, M. and Cowan, CR. Cell Rep. 2014 Sep 11;8(5):1380-90.

oaSi10 [par-5p::GFP::par-5::par-5 3' UTR + unc-119(+)] II. MOS single copy insertion of GFP-tagged par-5 under control of its endogenous regulatory sequences. Reference: Mikl, M. and Cowan, CR. Cell Rep. 2014 Sep 11;8(5):1380-90.

oaSi13 [par-5p::GFP::par-5::par-5 3' UTR(splice bias) + unc-119(+)] II. MOS single copy insertion of PAR-5 under control of the PAR-5 3'UTR.2 isoform exclusively. Reference: Mikl, M. and Cowan, CR. Cell Rep. 2014 Sep 11;8(5):1380-90.

oaSi11 [par-5p::par-5::par-5 3' UTR.2(prespliced) + unc-119(+)] II. MOS single copy insertion of PAR-5 under control of the PAR-5 3'UTR.2 isoform exclusively. Reference: Mikl, M. and Cowan, CR. Cell Rep. 2014 Sep 11;8(5):1380-90.

ddIs26 [pie-1p::mCherry::par-6 + unc-119(+)]. oaSi10 [par-5p::GFP::par-5::par-5 3' UTR + unc-119(+)] II. MOS single copy insertion of GFP-tagged par-5 under control of its endogenous regulatory sequences. Reference: Mikl, M. and Cowan, CR. Cell Rep. 2014 Sep 11;8(5):1380-90.