Search Strains

ieSi57 [eft-3p::TIR1::mRuby + unc-119(+)] II. Maintain at 15C. Temperature-sensitive dauer constitutive. CRISPR/Cas9-engineered AID* conditional daf-12 allele in daf-7(e1372) background with ubiquitous TIR1 expression. Reference: Aghayeva et al. PLoS Biol. 2021 Apr 23;19(4):e3001204. doi: 10.1371/journal.pbio.3001204. PMID: 33891586.

otIs657 [klp-6p::mCherry + flp-3p::mCherry + klp-6p::NLG1::GFP1-10 + flp-3p::NLG1::GFP11]. IL2-IL1 GRASP synaptic reporter. Please contact Oliver Hobert prior to publishing work using this strain.

otEx7146 [ceh-32(+) fosmid WRM0637dA10 + myo-2p::RFP]. Reference: Cros C & Hobert O. bioRxiv 2022.04.19.488792; doi: https://doi.org/10.1101/2022.04.19.488792.

otIs683 [hlh-4(fosmid)::YFP + ttx-3p::mCherry]. Transgene is expressed in ADL neurons. Reference: Masoudi N, et al. PLoS Biol. 2018 Apr 19;16(4):e2004979.

CRISPR/Cas9-engineered insertion of mNeonGreen::3xFLAG::AID* tags into endogenous ceh-34 locus. Reference: The enteric nervous system of C. elegans is specified by the Sine Oculis-like homeobox gene ceh-34. Vidal B, et al. bioRxiv 2021.11.30.470650; doi: https://doi.org/10.1101/2021.11.30.470650

otIs695 [nlp-3p::GFP + lin-15(+)]. Reference: Vidal B, et al. bioRxiv 2021.11.30.470650; doi: https://doi.org/10.1101/2021.11.30.470650

ot941[che-1::SEC-GFP::TEV::3xFLAG]. Endogenous locus of che-1 carrying ot63 null alllele and tagged with GFP (che-1::SEC-GFP::TEV::3xFLAG). che-1(ot63) is a loss of function allele which carries a (Cys255Tyr) missense mutation in the fourth Zn finger domain of CHE-1. Reference: Chang S, et al. Genes Dev. 2003 Sep 1;17(17):2123-37.

otEx7363 [flp-3p::mCherry + flp-3p::GFP::cla-1 + unc-122p::GFP]. Pick GFP+ animals to maintain. Presynaptic GFP::cla-1 reporter for IL1 neurons with cytoplasmic IL1p::mCherry in the background. Reference: Majeed M, et al. Elife. 2024 Jan 15:12:RP91775. doi: 10.7554/eLife.91775. PMID: 38224479.

otIs76 [pttx-3p::kal-1 + unc-122p::GFP] IV. mgIs18 [ttx-3p::GFP] IV. Long, otherwise phenotypically WT. ttx-3p::GFP labels AIY interneurons. hst-6(ot17) suppresses the branching phenotype of KAL-1 overexpression in AIY. hst-6(ot17) is closely linked to lon-2.

AWC neurons are marked with mCherry. AWC nuclei can be isolated by INTACT.

otIs355 [rab-3p::2xNLS::TagRFP] IV. otIs747 [srg-13p::GFP]. PHA neurons are labeled with GFP and RFP. Can be used to isolate PHA by FACS. Used by CeNGEN project for RNA-Seq (https://www.cengen.org/).

otIs748 [rab-3p(prom1)::GFP + ttx-3p::mCherry] X. Pan-neuronal cytoplasmic GFP expression. Reference: Leyva-Diaz E & Hobert O. Current Biol. 2022 Mar 3;S0960-9822(22)00262-7. PMID: 35259341

otIs356 [rab-3p(prom1)::2xNLS::TagRFP] V. otEx6853 [srv-3p::GFP + pha-1(+)]. Maintain at 25C to retain array. ADL neurons are marked with GFP and RFP.

otDf1is a deletion obtained using Cas9-sgRNA ribonucleoprotein complex, following Dokshin et al, 2018 method removing ceh-41, ceh-21, T26C11.9, and ceh-39. 8968 bp deletion, from position -159 upstream ceh-39 ATG, to +1608 from ATG ceh-41 (+89 from STOP ceh-41).

ynIs34 [flp-19p::GFP] IV. otEx7424 [lgc-35p::tagRFP + pha-1(+)]. AIN neurons are marked with GFP and RFP. Maintain at 25C to retain array.

wtfIs5 [rab-3p::NLS::GCaMP6s + rab-3p::NLS::tagRFP]. Integrated calcium indicator GCaMP6s and calcium-insensitive fluorescent protein RFP in the nuclei of all neurons. otIs670 provides a healthier alternative to otIs669, performing better in a variety of phenotypic assays. See description of strain OH15263 for full description of otIs670 NeuroPAL (Neuronal Polychromatic Atlas of Landmarks) transgene (Yemini E, et al. Cell. 2021 Jan 7;184(1):272-288.e11. PMID: 33378642). Reference: Yemini E, et al. Cell. 2021 Jan 7;184(1):272-288.e11. PMID: 33378642 Free pre-print available at https://www.biorxiv.org/content/10.1101/676312v2

otEx7476 [ceh-34(fosmid) + myo-3p::mCherry]. Pick mCherry+ to maintain. ot1014 is a CRISPR/Cas9-engineered allele removing the entire ceh-34 locus. ot1014 homozygotes arrest as L1 larvae. Reference: The enteric nervous system of C. elegans is specified by the Sine Oculis-like homeobox gene ceh-34. Vidal B, et al. bioRxiv 2021.11.30.470650; doi: https://doi.org/10.1101/2021.11.30.470650

Superficially wild-type. Insertion of GFP and FLAG tags directly before the stop codon of endogenous ceh-37 locus. Verified by sequencing. Reference: Reilly MB, et al. Nature. 2020 Aug;584(7822):595-601. PMID: 32814896.

otIs356 [rab-3p(prom1)::2xNLS::TagRFP] V. CUT Sextuple mutant animals show reduced pan-neuronal gene expression, impaired locomotion and resistance to aldicarb induced paralysis. otDf1 is a deletion affecting ceh-41, ceh-21, T26C11.9, and ceh-39. Reference: Leyva-Diaz E & Hobert O. Current Biol. 2022 Mar 3;S0960-9822(22)00262-7. PMID: 35259341.

otIs768 [hlh-34p::GFP + unc-119(+)]. GFP expression in AVH neurons. Derived by integration of leEx1692. Can be used to isolate AVH by FACS. Used by CeNGEN project for RNA-Seq (https://www.cengen.org/).

otEx7581 [unc-39(+) fosmid WRM0636cG07 + inx-6(prom18)::GFP]. Reference: Cros C & Hobert O. bioRxiv 2022.04.19.488792; doi: https://doi.org/10.1101/2022.04.19.488792.

otIs785 [ceh-34p::GFP::CLA-1 + ceh-34p::TagRFP + rol-6(su1006)]. Rollers. Reference: The enteric nervous system of C. elegans is specified by the Sine Oculis-like homeobox gene ceh-34. Vidal B, et al. bioRxiv 2021.11.30.470650; doi: https://doi.org/10.1101/2021.11.30.470650

otIs794 [cho-1(fosmid)::NLS::SL2::YFP::H2B + eat-4(fosmid)::SL2::LSSmOrange::H2B + unc-47p::tagBFP2 + cat-1p::mMaroon + rab-3p1::2xNLS::tagRFP]. cho-1 fosmid reporter construct labels cholinergic neurons. eat-4 fosmid reporter construct labels glutamatergic neurons. unc-47p::tagBFP2 reporter (contains -2778 to -1 promoter region) labels GABAergic neurons. cat-1p::mMaroon reporter (contains -1599 to -1) labels monoaminergic neurons. rab-3p::tagRFP (contains -1462 to +2921 of prom1) labels all neurons (pan-neuronal marker). Reference: Leyva-Diaz E & Hobert O. Current Biol. 2022 Mar 3;S0960-9822(22)00262-7. PMID: 35259341

otEx7681 [glr-3p::nlp-45 cDNA::SL2::TagRFP::p10 3'UTR + inx-6(prom18)::TagRFP]. Pick RFP+ to maintain. Overexpression of nlp-45 in the RIA neurons in nlp-45 mutant background. Reference: Sun H & Hobert O. Nature. 2021 Dec;600(7887):93-99. doi: 10.1038/s41586-021-04071-4. PMID: 34759317.

otIs810 [sto-3p::tagRFP + sto-3p::GFP::cla-1]. Reference: Reilly MB, et al. Widespread employment of conserved C. elegans homeobox genes in neuronal identity specification. bioRxiv 2022.04.29.490095; doi: https://doi.org/10.1101/2022.04.29.490095

otIs790 [UPN::npp-9::mCherry::blrp::3xflag]. otIs790 contains a pan-neuronal INTACT tag for pull-down of all neuronal nuclei. CUT sextuple-mutant background. Reference: Leyva-Diaz E & Hobert O. Current Biol. 2022 Mar 3;S0960-9822(22)00262-7. PMID: 35259341

otDf2 is a 25,484 bp deletion of the insulin cluster from Chr I, removing ins-28, ZC334.13, ins-29, ins-25, ins-27, linc-124, ZC334.12, ZC334.17, ins-24, ins-30, and ins-26. Reference: Sural S, et al. Sci Adv. 2025 Sep 26;11(39):eadw1270. doi: 10.1126/sciadv.adw1270. PMID: 40991693.

otEx7760 [cat-4p::mCherry + zig-3p::mCherry + zig-3p::NLG1::GFP1-10 + cat-4p::NLG1::GFP11 + inx-6(prom18)::TagRFP]. BDU-HSN GRASP synaptic reporter. Please contact Oliver Hobert prior to publishing work using this strain.

CRISPR/Cas9 engineered tagged endogenous locus. Him. See description of strain OH15262 for full description of otIs669 NeuroPAL (Neuronal Polychromatic Atlas of Landmarks) transgene (Yemini E, et al. Cell. 2021 Jan 7;184(1):272-288.e11. PMID: 33378642). Reference: Cros C & Hobert O. bioRxiv 2022.04.19.488792; doi: https://doi.org/10.1101/2022.04.19.488792.

otIs854 [unc-39p::tagRFP]. Reference: Cros C & Hobert O. bioRxiv 2022.04.19.488792; doi: https://doi.org/10.1101/2022.04.19.488792.

egIs1 [dat-1p::GFP]; reportedly maps to LG IV. otIs860 [flp-33p::tagRFP]. CEP neurons are marked with bright green expression (dat-1p::GFP), and can be sorted by selecting the brightest GFP. there are other cells in which the GFP marker shows up, but expression is faint. Other fluorescing neurons (ADE and PDE) will be double positive (GFP and tagRFP). Used by CeNGEN project for RNA-Seq (https://www.cengen.org/).

Null allele of unc-30 generated by gRNAs targeted to the first and last exons, resulting in a 5168 bp deletion from -37 to +5131 relative to the start of the ORF. Reference: Leyva-Diaz E & Hobert O. Current Biol. 2022 Mar 3;S0960-9822(22)00262-7. PMID: 35259341

ot1193 is a CRISPR-engineered mutation of a small unc-39 auto-regulatory region containing a cluster of several predicted homeodomain binding sites in the endogenously-tagged unc-39(syb4537) reporter strain. Reference: Cros C & Hobert O. bioRxiv 2022.04.19.488792; doi: https://doi.org/10.1101/2022.04.19.488792.

otEx7895 [nmr-1p::CyoFP + flp-3p::mNeptune + gcy-35p::mNeptune flp-7p::tagRFP + klp-6::tagRFP + C42D4.1::GFP]. Pick animals with red or green fluorescence to maintain. AxoPAL strain for visualizing axonal neighborhoods. Reference: Majeed M, et al. Sci Adv. 2025 Feb 21;11(8):eads2852. doi: 10.1126/sciadv.ads2852. PMID: 39983000.

CRISPR/Cas9 engineered tagged endogenous locus. Him. See description of strain OH15262 for full description of otIs669 NeuroPAL (Neuronal Polychromatic Atlas of Landmarks) transgene (Yemini E, et al. Cell. 2021 Jan 7;184(1):272-288.e11. PMID: 33378642). Reference: Reilly MB, et al. Widespread employment of conserved C. elegans homeobox genes in neuronal identity specification. bioRxiv 2022.04.29.490095; doi: https://doi.org/10.1101/2022.04.29.490095

The Null Transcriptional Reporter (NuTR) cassette was used to remove the linc-36 locus resulting in a null allele and transcriptional reporter driving expression of GFP. The cassette contains the dominant sqt-1(e1350) allele that results in roller animals. Expression of Cre (via crossing into a strain expressing a germline Cre or by injection of a Cre transgene) will result in removal of the selectable markers and result in non-roller animals. Pick Rollers to retain full transgene cassette. GFP expression is seen in the sperm of both hermaphrodites and males.

otIs355 [rab-3p(prom1)::2xNLS::TagRFP] IV. otEx7950 [clec-166::GFP + pha-1(+)]. Maintain at 25C to select for animals carrying the array. Pan-neuronal nuclear RFP expression. Co-expression of GFP and TagRFP in M5 neuron can be used to isolate M5 by FACS. Used by CeNGEN project for RNA-Seq (https://www.cengen.org/).

ot1015 is a GFP tag inserted at the C-terminus of the endogenous ceh-44 locus by CRISPR. CUT Quintuple-mutant background. Reduced pan-neuronal nuclear CEH-44::GFP expression. Please contact Oliver Hobert prior to publishing work using this strain.

otIs810 [sto-3p::tagRFP + sto-3p::GFP::cla-1].

unc

CRISPR/Cas9-engineered 1691 bp deletion removing entire hlh-32 locus; similar to syb6773 deletion. Reference: Aguilar GR, et al. PLoS Biol. 2025 Jan 6;23(1):e3002979. doi: 10.1371/journal.pbio.3002979. PMID: 39761329

C-terminal GFP tag inserted before STOP codon of endogenous Ctr-ceh-32 locus using CRISPR/Cas9. Generated in C. tropicalis NIC203 background. Reference: Toker IA, et al. bioRxiv 2024.11.23.624988; doi: https://doi.org/10.1101/2024.11.23.624988.

C-terminal GFP tag inserted before STOP codon of endogenous Cbr-ceh-32 locus using CRISPR/Cas9. Generated in C. briggsae AF16 background. Reference: Toker IA, et al. bioRxiv 2024.11.23.624988; doi: https://doi.org/10.1101/2024.11.23.624988.

ot1443 is CRISPR-engineered 646 bp deletion of the ins-35 gene removing all the coding sequence except the last 7 aa, which should not be translated due to the absence of an ATG. Sequence after edit: ttctgaaatttttgaaattgtctaattttcCAGCAGACTCAGATGAACTATTCAATTAATAATTTAAGTT. Reference: Sural S, et al. Sci Adv. 2025 Sep 26;11(39):eadw1270. doi: 10.1126/sciadv.adw1270. PMID: 40991693.

T2A::mScarlet3::H2B tag inserted before STOP codon of endogenous Cbr-lgc-37 locus using CRISPR/Cas9. Generated in C. briggsae AF16 background. Reference: Toker IA, et al. bioRxiv 2024.11.23.624988; doi: https://doi.org/10.1101/2024.11.23.624988.

T2A::mScarlet3::H2B tag inserted before STOP codon of endogenous Ctr-lgc-37 locus using CRISPR/Cas9. Generated in C. tropicalis NIC203 background. Reference: Toker IA, et al. bioRxiv 2024.11.23.624988; doi: https://doi.org/10.1101/2024.11.23.624988.

mgIs18 [ttx-3p::GFP] IV. otIs35 [ttx-3p::kal-1 + rol-6(su1006)] X. otIs35 has been mapped to LG X between lon-2 and hst-6. Rollers. ttx-3p::GFP labels AIY interneurons. ot19 suppresses the branching phenotype of KAL-1 overexpression in AIY. hst-6(ot19) is closely linked to otIs35.

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.

ntIs1 [gcy-5p::GFP + lin-15(+)] V; integration of adEx1262 [gcy-5p::GFP + lin-15(+)]. otIs151 [ceh-36p::RFP + rol-6(su1006)]. Rollers. Both ASEL and ASER show GFP expression from ntIs1.