Search Strains

mRuby2 tag inserted into the endogenous let-2 locus (C-terminus tag). Healthy strain, wild-type growth. Reference: Srinivasan S,et al. J Cell Biol. 2025 224(6):e202412118. doi:10.1083/jcb.202412118 PMID: 40100062.

CRISPR/Cas9 insertion of mNeonGreen tag into endogenous let-60 locus. Fairly high penetrance of L1 rod-like lethality. Reference: Jayadev et al. 2023. Post-embryonic endogenous expression and localization of LET-60/Ras in C. elegans. microPublication Biology. 10.17912/micropub.biology.000931.

qySi205 [lin-29p::icmt-1::mscarlet] I. qyIs562 [zmp-1p::zmp-1sp::sfGFP::KDEL]. MosSCI single copy insertion for anchor cell specific expression of prenylation enzyme icmt-1 and anchor cell specific expression of KDEL ER lumen marker. Superficially wild-type. Reference: Park K, et al. J Cell Biol. 2024 Oct 7;223(10):e202402035. PMID: 39007804.

mNG tag inserted into the endogenous let-2 locus (C-terminus tag). Healthy strain, wild-type growth. Reference: Srinivasan S,et al. J Cell Biol. 2025 224(6):e202412118. doi:10.1083/jcb.202412118 PMID: 40100062.

qySi205 [lin-29p::icmt-1::mscarlet] I. MosSCI single copy insertion for anchor cell specific expression of prenylation enzyme icmt-1 and sec-16A.1 locus endogenously tagged with mNG at the N-terminus. Superficially wild-type. Reference: Park K, et al. J Cell Biol. 2024 Oct 7;223(10):e202402035. PMID: 39007804.

qySi252 [let-2p::mNG] I. Single-copy CRISPR-based integration into ttTi4348. Wild-type growth. Reference: Srinivasan S,et al. J Cell Biol. 2025 224(6):e202412118. doi:10.1083/jcb.202412118 PMID: 40100062.

Endogenous reporter of type IV collagen alpha chain (let-2) translation. mNG tag inserted at the endogenous C-terminus locus with a P2A sequence between the C-terminus of let-2 and mNG. P2A causes let-2 to be translated independently of mNG. Cytosolic mNG is a reporter of translation. Reference: Srinivasan S,et al. J Cell Biol. 2025 224(6):e202412118. doi:10.1083/jcb.202412118 PMID: 40100062.

Endogenously tagged temperature sensitive glycine substitution mutant allele (b246) of let-2. Tagged with mNG at the C-terminus. Temperature sensitive embryonic lethal. Grows at 15C, 20C. Lethal at 25C (embryonic). See also CGC DH246. Reference: Srinivasan S,et al. J Cell Biol. 2025 224(6):e202412118. doi:10.1083/jcb.202412118 PMID: 40100062.

Photoconvertible mMaple tag inserted into the endogenous let-2 locus (C-terminus tag). Healthy strain, wild-type growth. Reference: Srinivasan S,et al. J Cell Biol. 2025 224(6):e202412118. doi:10.1083/jcb.202412118 PMID: 40100062.

pkIs1582 [let-858::GFP + rol-6(su1006)]. Rollers.

jsSi1962 [mosL::loxP::FRT + myo-2p::nls::CyOFP::let-858 3' + mex-5p::FLP::D5::glh-2 3' + FRT3 mosR] I. Reference: Nonet ML. Rapid generation of C. elegans single copy transgenes combining RMCE and drug selection. bioRxiv 2023.03.05.531207; doi: https://doi.org/10.1101/2023.03.05.531207

jsSi1978 [loxP::FRT + myo-2p::nls::cyOFP::let-858 3' + mex-5p::FLP::D5::glh-2 3' + FRT3] V. Reference: Nonet ML. Rapid generation of C. elegans single copy transgenes combining RMCE and drug selection. bioRxiv 2023.03.05.531207; doi: https://doi.org/10.1101/2023.03.05.531207

jsSi1963 [loxP + FRT::myo-2p::nls::CyOFP::let-858 3' + mex-5p::FLP::D5::glh-2 3' + FRT3] IV. Reference: Nonet ML. Rapid generation of C. elegans single copy transgenes combining RMCE and drug selection. bioRxiv 2023.03.05.531207; doi: https://doi.org/10.1101/2023.03.05.531207

jsSi1901 [loxP + FRT + myo-2p::nls::cyOFP::let-858 3' + mex-5p::FLP::D5::glh-2 3' + FRT3] II. Reference: Nonet ML. Rapid generation of C. elegans single copy transgenes combining RMCE and drug selection. bioRxiv 2023.03.05.531207; doi: https://doi.org/10.1101/2023.03.05.531207

jsSi2029 [loxP::myo-2p::FRT::Scarlet 2x::tbb-2 3' + rps-0p::hygR::unc-54 3' + mex-5p::nls::Cre::glh-2 3' + FRT3] IV. Reference: Nonet ML. Rapid generation of C. elegans single copy transgenes combining RMCE and drug selection. bioRxiv 2023.03.05.531207; doi: https://doi.org/10.1101/2023.03.05.531207

jsSi2049 [loxP::myo-2p::FRT::Scarlet 2x::tbb-2 3' + rps-0p::hygR::unc-54 3' + ori <{Amp} mex-5p::nls::Cre::glh-2 3' + FRT3] V. Reference: Nonet ML. Rapid generation of C. elegans single copy transgenes combining RMCE and drug selection. bioRxiv 2023.03.05.531207; doi: https://doi.org/10.1101/2023.03.05.531207

jsSi2027 [loxP::myo-2p::FRT::Scarlet 2x::tbb-2 3' + rps-0p::hygR::unc-54 3' + ori <{Amp} + mex-5p::nls::Cre::glh-2 3' + FRT3] II. Him. Reference: Nonet ML. Rapid generation of C. elegans single copy transgenes combining RMCE and drug selection. bioRxiv 2023.03.05.531207; doi: https://doi.org/10.1101/2023.03.05.531207

Heterozygous for CSR-1 deletion are Unc. Homozygous for csr-1(tm892) are non-Unc and Sterile. Transgenes seem to be silenced after a few generations, since non-uncs gradually become sterile! - must keep re-freezing immediately after thawing a new tube

ltSi386 [hcp-3p::GFP::hcp-3(re-encoded) + Cbr-unc-119(+)] I. ltSi240 [csr-1p::csr-1(re-encoded) + Cbr-unc-119(+)] II. The hcp-3 and csr-1 coding sequences in the transgenes were re-encoded for RNAi-resistance (see Gerson-Gurwitz A, et al. Cell. 2016, Supplementary Figure S3A). [NOTE: it is not known if unc-119(ed3) is still present in the background of this strain.] Reference: Gerson-Gurwitz A, et al. Cell. 2016 Apr 7;165(2):396-409.

ltSi386 [hcp-3p::GFP::hcp-3(re-encoded) + Cbr-unc-119(+)] I. ltSi242 [csr-1p::csr-1(re-encoded; D606A, D681A: isoform b numbering) + Cbr-unc-119(+)] II. The hcp-3 and csr-1 coding sequences in the transgenes were re-encoded for RNAi-resistance (see Gerson-Gurwitz A, et al. Cell. 2016, Supplementary Figure S3A). [NOTE: it is not known if unc-119(ed3) is still present in the background of this strain.] Reference: Gerson-Gurwitz A, et al. Cell. 2016 Apr 7;165(2):396-409.

ltSi386 [hcp-3p::GFP::hcp-3(re-encoded) + Cbr-unc-119(+)] I. The hcp-3 coding sequence in the transgene was re-encoded for RNAi-resistance (see Gerson-Gurwitz A, et al. Cell. 2016, Supplementary Figure S3A). [NOTE: it is not known if unc-119(ed3) is still present in the background of this strain.] Unc worms are heterozygous for csr-1(tm892), non-Unc worms are homozygous for csr-1(tm892). Reference: Gerson-Gurwitz A, et al. Cell. 2016 Apr 7;165(2):396-409.

ltSi240 [csr-1p::csr-1(re-encoded) + Cbr-unc-119(+)] II. The csr-1 coding sequence in the transgene was re-encoded for RNAi-resistance (see Gerson-Gurwitz A, et al. Cell. 2016, Supplementary Figure S3A). [NOTE: it is not known if unc-119(ed3) is still present in the background of this strain.] Reference: Gerson-Gurwitz A, et al. Cell. 2016 Apr 7;165(2):396-409.

ltSi448 [csr-1p::GFP::csr-1(re-encoded; GFP inserted after aa #5 of isoform b) + Cbr-unc-119(+)] II. ItIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV. The csr-1 coding sequence in the transgene was re-encoded for RNAi-resistance (see Gerson-Gurwitz A, et al. Cell. 2016, Supplementary Figure S3A). [NOTE: it is not known if unc-119(ed3) is still present in the background of this strain.] Reference: Gerson-Gurwitz A, et al. Cell. 2016 Apr 7;165(2):396-409.

CRISPR/Cas9 engineered. Tagged MDF-1 at its endogenous locus with mScarlet. gRNA sequence: tgattgcattaaacatatt Reference: Lara-Gonzalez P, et al. Science. 2021 Jan 1;371(6524):64-67. doi: 10.1126/science.abc1424. PMID: 33384372.

otis445 [ace-2p::RFP + LacO repeats]. gwIs39 [baf-1p::GFP::lacI::let-858 3'UTR + vit-5p::GFP]. RFP expression in cholinergic motor neurons. LACI::GFP aggregates on LacO repeats to form two dots in every nucleus. vit-5::GFP is expressed in intestine at L4 stage and later. Reference: Patel T & Hobert O. eLife 2017.

otIs545 [gcy-5p::RFP + LacO repeats]. otIs593 [let-858p::GFP::LacI + ttx-3p::mCherry]. Maintain at 20C; otIs545 is very unstable at lower temperatures. RFP expression in ASER neuron. LACI::GFP aggregates on LacO repeats to form two dots in every nucleus. otIs545 is unstable, presumably due to the highly repetitive nature of the LacO array. Stock should be periodically examined for RFP expression and GFP localization to retain expression of the array. Reference: Patel T & Hobert O. eLife 2017.

SL2::mScarlet-I3::H2B tag inserted into endogenous pks-1 locus via CRISPR/Cas9 engineering. Reference: Cao WX, et al. (2024). bioRxiv: 2024.2006.2011.598534. https://doi.org/10.1101/2024.06.11.598534.

mScarlet-I3 tag inserted into endogenous golg-4 locus via CRISPR/Cas9 engineering. Reference: Cao WX, et al. Genetics. 2024 Oct 7;228(2):iyae126. doi: 10.1093/genetics/iyae126. PMID: 39103170.

mScarlet-I3 tag inserted into endogenous unc-75 locus via CRISPR/Cas9 engineering. Reference: Cao WX, et al. (2024). bioRxiv: 2024.2006.2011.598534. https://doi.org/10.1101/2024.06.11.598534.

oyIs14 [sra-6::GFP + lin-15(+)]. otEx1467 [let-756(+) + ceh-22p::GFP]. Animals carrying otEx1467 are DpyUnc. Animals which have lost the otEx1467 array are DpyUncLet.

oyIs14 [sra-6::GFP + lin-15(+)]. otEx1468 [let-756(+) + ceh-22p::GFP]. Animals carrying otEx1468 are DpyUnc. Animals which have lost the otEx1468 array are DpyUncLet.

otEx1765 [let-765::GFP + rol-6(su1006)]. Maintain by picking Rollers.

otEx1766 [let-765::GFP + rol-6(su1006)]. Maintain by picking Rollers.

otEx1768 [let-756::GFP + dpy-7::RFP + rol-6(su1006)]. Maintain by picking Rollers.

wgIs119 [let-381::TY1::EGFP::3xFLAG + unc-119(+)]. TY1::EGFP::3xFLAG tag inserted in frame at C-terminus of coding sequence by recombineering. Expression of transgene confirmed by GFP. References: Sarov M, et al. Nat Methods (2006) 10:839-44. Zhong, M, et al. PLoS Genet (2010) 6(2):e1000848. Strain was constructed as part of the Regulatory Element Project, part of modENCODE (http://www.modencode.org).

ulbEx78 [F16F9.3p::CFP]. Pick CFP+ to maintain. wrmScarlet expression in ciliated neurons provides a useful marker to track ciliary production of extracellular vesicles and their subsequent engulfment by the surrounding glial cells (AMsh, PHsh). Reference: Razzauti A & Laurent P. Elife. 2021 Sep 17:10:e67670. doi: 10.7554/eLife.67670. PMID: 34533135.

Exhibits sterility and inappropriate linker cell survival in males. Occasionally exhibits lack of distal tip cell migration in hermaphrodites. Reference: Kinet MJ, et al. Elife. 2016 Mar 8;5. pii: e12821.

Linker with GFP tag and degron inserted at the C terminus of the endogenous let-381 locus. GFP expression in GLR glia, HMC and coelomocytes. Reference: Stefanakis N, et al. 2024 Feb 15. doi: 10.1038/s44318-024-00049-w. PMID: 38360995.

Heterozygotes are WT and segregate WT, paralyzed Dpys and Unc-4s which arrest as larval lethals.

Heterozygotes are WT and segregate WT, paralyzed Dpys and Unc-4s which arrest as larval lethals.

Heterozygotes are WT and segregate WT, paralyzed Dpys and dead eggs. cc507 is a recessive embryonic lethal.

Heterozygotes are WT and segregate WT, paralyzed Dpys and Unc-4s which arrest as larval lethals.

Heterozygotes are WT and segregate WT, paralyzed Dpys and Unc-4s which arrest as larval lethals.

Heterozygotes are WT and segregate WT, paralyzed Dpys and embyronic lethals.

Heterozygotes are WT and segregate WT, paralyzed Dpys and Unc-4s which arrest as larval lethals.

ccEx7271 [let-858::GFP + pha-1(+)]. This strain expresses nuclear-localized GFP in all somatic nuclei, but reduced or no GFP in germ cells. If maintained at 20C, pha-1(ts) genotype will select for transgenic animals. Sporadic germ cell expression can be observed when maintained at 25C.

Heterozygotes are Unc and segregate Uncs, non-Uncs and dead eggs.

Endogenous atp-3 locus tagged with GFP by CRISPR/Cas9 engineering. ATP-3::GFP under the atp-3 promoter. ATP-3::GFP expression ubiquitously expressed in mitochondria. Heterozygotes have green pharynx. Homozygotes do not have green pharynx and are sterile. Pick hets to maintain.