Search Strains

ynIs54 [flp-20p::GFP] IV. hdIs32 [glr-1::DsRed2]. PVC neurons are labeled with GFP and DsRed2. Can be used to isolate PVC by FACS. Used by CeNGEN project for RNA-Seq (https://www.cengen.org/).

CRISPR/Cas9 engineered deletion of full cdh-8 locus.

CRISPR/Cas9 engineered deletion of full cdh-5 locus.

otEx7578 [rab-3p::fem-3::SL2::TagRFP + inx-6(prom18)::TagRFP]. Panneuronal overexpression of fem-3 causes panneuronal masculation. Reference: Sun H & Hobert O. Nature. 2021 Dec;600(7887):93-99. doi: 10.1038/s41586-021-04071-4. PMID: 34759317.

otIs809 [glr-7::GFP + lin-15(+)]. Reference: Vidal B, et al. bioRxiv 2021.11.30.470650; doi: https://doi.org/10.1101/2021.11.30.470650

SL2::GFP::H2B tag inserted at C-terminus of endogenous cdh-7 locus.

Endogenous npr-17 locus tagged with GFP reporter. Reference: Sun H & Hobert O. Nature. 2021 Dec;600(7887):93-99. doi: 10.1038/s41586-021-04071-4. PMID: 34759317.

otIs115 [gcy-12p::GFP]. Integrated promoter fusion reporter for gcy-12. See description of strain OH15262 for full description of otIs669 NeuroPAL (Neuronal Polychromatic Atlas of Landmarks) transgene. References: 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. Sun H & Hobert O. Nature. 2021 Dec;600(7887):93-99. doi: 10.1038/s41586-021-04071-4. PMID: 34759317.

otEx7578 [rab-3p::fem-3::SL2::TagRFP + inx-6(prom18)::TagRFP]. Panneuronal overexpression of fem-3 causes panneuronal masculation. 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

Him. Insertion of GFP and FLAG tags directly before the stop codon of endogenous ceh-24 locus; verified by sequencing. Derived by crossing him-8 into parental strain PHX1608. Reference: Reilly MB, et al. Nature. 2020 Aug;584(7822):595-601. PMID: 32814896.

otIs816 [klp-6p::mCherry + klp-6p::GFP::cla-1]. Reference: Cros C & Hobert O. bioRxiv 2022.04.19.488792; doi: https://doi.org/10.1101/2022.04.19.488792.

SL2::GFP::H2B tag inserted at C-terminus of endogenous cdh-10 locus.

otIs825 [degl-1p::GFP + unc-122p::GFP]. Reference: Cros C & Hobert O. bioRxiv 2022.04.19.488792; doi: https://doi.org/10.1101/2022.04.19.488792.

GFP tag inserted at the C-terminus of the endogenous ceh-48 locus by CRISPR. Allele obtained using Cas9-sgRNA ribonucleoprotein complex, following Dokshin et al, 2018 method. Reference: Leyva-Diaz E & Hobert O. Current Biol. 2022 Mar 3;S0960-9822(22)00262-7. PMID: 35259341

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

SL2::GFP::H2B tag inserted at C-terminus of endogenous cdh-5 locus.

otIs833 [egas-4p::TagRFP + unc-122p::GFP]. Reference: Cros C & Hobert O. bioRxiv 2022.04.19.488792; doi: https://doi.org/10.1101/2022.04.19.488792.

dzIs89 [inx-1p::BirA::nrx-1 + gcy-13p::AP::nlg-1 + gcy-13p::tagBFP + unc-122p::stretavadin::tagRFP] X. cdh-5(ot1093) is a CRISPR/Cas9 engineered deletion of full cdh-5 locus. Reference: Majeed M, et al. Sci Adv. 2025 Feb 21;11(8):eads2852. doi: 10.1126/sciadv.ads2852. PMID: 39983000.

otIs846 [egas-1p::GFP + unc-122p::GFP]. Reference: Cros C & Hobert O. bioRxiv 2022.04.19.488792; doi: https://doi.org/10.1101/2022.04.19.488792.

unc-86(ot1158) is a CRISPR-engineered null allele removing the entire unc-86 coding region. Very slightly Unc. The repair ssODN is TCTGTCTCCTCCCAGCTTCAAGGTCCCCCTCTTTTACCTTGATTCTTTGATTAGTTTCGTTTTCGTGAAC, and the two sgRNAs are acaacatacaatgggctacc (start) caaggtccccctcttttcca (end). References: Cros C & Hobert O. bioRxiv 2022.04.19.488792; doi: https://doi.org/10.1101/2022.04.19.488792. Reilly MB, et al. bioRxiv 2022.04.29.490095; doi: https://doi.org/10.1101/2022.04.29.490095.

unc-86(ot1158) is a CRISPR-engineered null allele removing the enrite unc-86 coding region. The repair ssODN is TCTGTCTCCTCCCAGCTTCAAGGTCCCCCTCTTTTACCTTGATTCTTTGATTAGTTTCGTTTTCGTGAAC, and the two sgRNAs are acaacatacaatgggctacc (start) caaggtccccctcttttcca (end). Reference: Cros C & Hobert O. bioRxiv 2022.04.19.488792; doi: https://doi.org/10.1101/2022.04.19.488792.

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/).

otIs867 [srh-71p::GFP]. Reference: Cros C & Hobert O. bioRxiv 2022.04.19.488792; doi: https://doi.org/10.1101/2022.04.19.488792.

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.

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

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

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

Egl. 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-23 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 male somatic gonad and extremely dim expression in hermaphrodite spermatheca.

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.

The Null Transcriptional Reporter (NuTR) cassette was used to remove the linc-41 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 male somatic gonad, spermatheca of hermaphrodites, as well as several other tissues in the head.

otIs879 [sri-1p::NLS::GFP + pha-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

CRISPR-engineered mutation of CUT transcription factor binding site in endogenously-tagged rab-3(syb3072[rab-3::T2A::3xNLS::GFP]). Causes a reduction in rab-3 expression. Reference: Leyva-Diaz E & Hobert O. Current Biol. 2022 Mar 3;S0960-9822(22)00262-7. PMID: 35259341

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.

GFP tag inserted at the C-terminus of the endogenous nlp-66 locus by CRISPR. Allele generated by SUNY Biotech. 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. bioRxiv 2022.04.29.490095; doi: https://doi.org/10.1101/2022.04.29.490095

ot1264 is a CRISPR deletion removing -10.8 kb to -1.8 kb before the first exon of ttx-1, made in the context of the ttx-1::GFP allele syb1679. Notably ttx-1 expression in RIB is lost, and RIB markers are off or dim. 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

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.

ot1360 is CRISPR-engineered 1,339 bp deletion removing the entire ins-1 coding region. Sequence after edit: TTATAGGGCATTTTTCAGTTCCTCACCGCTCTCAAATCAGGTCAATATCGTTGGCAGCTCACCGGACCCT. Reference: Sural S, et al. Sci Adv. 2025 Sep 26;11(39):eadw1270. doi: 10.1126/sciadv.adw1270. PMID: 40991693.

T2A::GFP::H2B tag inserted before STOP codon of endogenous Cbr-eat-4 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::GFP::H2B tag inserted before STOP codon of endogenous Cbr-unc-25 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.

C-terminal GFP tag inserted before STOP codon of endogenous lim-6 locus using CRISPR/Cas9. Generated in N2 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 Ctr-lim-6 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-lim-6 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::GFP::H2B tag inserted before STOP codon of endogenous Ctr-unc-25 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.

Endogenous locus tagged with SL2::GFP::H2B at C-terminus using CRISPR/Cas9. The reporter is linked to him-8(e1489) in the background. Reference: Aguilar GR, et al. PLoS Biol. 2025 Jan 6;23(1):e3002979. doi: 10.1371/journal.pbio.3002979. PMID: 39761329