Search Strains

Small body size. Crumpled spicules. Male ray 8-9 fusion.

qcEx24 [GFP::sma-3 + rol-6(su1006)]. Rollers. Pick rollers to maintain. Array rescues body size phenotype. Reference: Wang J, Tokarz R, Savage-Dunn C. Development. 2002 Nov;129(21):4989-98.

Small body size. Crumpled spicules. Male ray 8-9 fusion.

gsgIs1 [synthetic 900 bp HA1 left::dpy-10 cRNA site:: synthetic 900 bp HA2 right] (IV: 5014948). Superficially wild-type. gsgIs1 can be used to generate single-copy insertions in C. elegans Chromosome IV. This strain is part of the SKI PLACE System, which can be used to generate single-copy insertions into the C. elegans genome at specific safe harbor locations on each chromosome through CRISPR-Cas9-mediated insertion. The system uses a single plasmid, pSKI (Addgene #232484), to insert transgenes at specific genomic locations. Generated in N2 background. Reference: Dinneen E, et al. G3 (Bethesda). 2025 Sep 19:jkaf220. doi: 10.1093/g3journal/jkaf220. PMID: 40973646.

gsgIs2 [synthetic 900 bp HA1 left::dpy-10 cRNA site:: synthetic 900 bp HA2 right] (I: 2850968). Superficially wild-type. sgIs2 can be used to generate single-copy insertions in C. elegans Chromosome I. This strain is part of the SKI PLACE System, which can be used to generate single-copy insertions into the C. elegans genome at specific safe harbor locations on each chromosome through CRISPR-Cas9-mediated insertion. The system uses a single plasmid, pSKI (Addgene #232484), to insert transgenes at specific genomic locations. Generated in N2 background. Reference: Dinneen E, et al. G3 (Bethesda). 2025 Sep 19:jkaf220. doi: 10.1093/g3journal/jkaf220. PMID: 40973646.

gsgIs5 [synthetic 900 bp HA1 left::dpy-10 cRNA site:: synthetic 900 bp HA2 right] (III: 7007779). Superficially wild-type. gsgIs5 can be used to generate single-copy insertions in C. elegans Chromosome III. This strain is part of the SKI PLACE System, which can be used to generate single-copy insertions into the C. elegans genome at specific safe harbor locations on each chromosome through CRISPR-Cas9-mediated insertion. The system uses a single plasmid, pSKI (Addgene #232484), to insert transgenes at specific genomic locations. Generated in N2 background. Reference: Dinneen E, et al. G3 (Bethesda). 2025 Sep 19:jkaf220. doi: 10.1093/g3journal/jkaf220. PMID: 40973646.

gsgIs8 [synthetic 900 bp HA1 left::dpy-10 cRNA site:: synthetic 900 bpHA2 right] (X: 798667). Superficially wild-type. gsgIs8 can be used to generate single-copy insertions in C. elegans Chromosome X. This strain is part of the SKI PLACE System, which can be used to generate single-copy insertions into the C. elegans N2 genome at specific safe harbor locations on each chromosome through CRISPR-Cas9-mediated insertion. The system uses a single plasmid, pSKI (Addgene #232484), to insert transgenes at specific genomic locations. Generated in N2 background. Reference: Dinneen E, et al. G3 (Bethesda). 2025 Sep 19:jkaf220. doi: 10.1093/g3journal/jkaf220. PMID: 40973646.

gsgIs3 [synthetic 900 bp HA1 left::dpy-10 cRNA site:: synthetic 900 bp HA2 right] (II: 9834540). Superficially wild-type. gsgIs3 can be used to generate single-copy insertions in C. elegans Chromosome II. This strain is part of the SKI PLACE System, which can be used to generate single-copy insertions into the C. elegans genome at specific safe harbor locations on each chromosome through CRISPR-Cas9-mediated insertion. The system uses a single plasmid, pSKI (Addgene #232484), to insert transgenes at specific genomic locations. Generated in N2 background. Reference: Dinneen E, et al. G3 (Bethesda). 2025 Sep 19:jkaf220. doi: 10.1093/g3journal/jkaf220. PMID: 40973646.

gsgIs4 [synthetic 900 bp HA1 left::dpy-10 cRNA site:: synthetic 900 bp HA2 right] (V: 8644845). Superficially wild-type. gsgIs4 can be used to generate single-copy insertions in C. elegans Chromosome V. This strain is part of the SKI PLACE System, which can be used to generate single-copy insertions into the C. elegans N2 genome at specific safe harbor locations on each chromosome through CRISPR-Cas9-mediated insertion. The system uses a single plasmid, pSKI (Addgene #232484), to insert transgenes at specific genomic locations. Generated in N2 background. Reference: Dinneen E, et al. G3 (Bethesda). 2025 Sep 19:jkaf220. doi: 10.1093/g3journal/jkaf220. PMID: 40973646.

kyIs140 [str-2::GFP + lin-15(+)]. ky389 is semi-dominant. str-2::GFP is expressed in both AWC neurons in ky389 mutants. PKA nsy-3(ky389).

kyIs140 [str-2::GFP + lin-15(+)] I. In ky399 mutants str-2::GFP is expressed in both AWX neurons. ky399 is a semi-dominant allele of slo-1, a large conductance potassium channel. PKA nsy-3(ky399). Do not distribute this strain; other labs should request it from the CGC. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.

kyIs140 [str-2::GFP + lin-15(+)] I. Him. In tir-1 mutants str-2::GFP is expressed in both AWC neurons.

kyIs140 [str-2::GFP + lin-15(+)] I. In nsy-1 mutants str-2::GFP is expressed in both AWC neurons.

slt-1 mutants have no dissecting-scope phenotype. They have a 40% penetrant defect in the ventral guidance of the AVM neuron scored with mec-4::GFP, a mild defect in CAN cell migration that is enhanced by a ceh-23::GFP transgene, and a mild defect in midline crossing by PVQ neurons scorable with sra-6::GFP. slt-1(eh15) is a complex rearrangement that duplicates the endogenous slt-1 gene, but disrupts both duplicated copies. The two copies are linked on X but the exact distance between them is not known. The duplication probably extends >13 kb based on Southern blotting. Deletion breakpoints for the first copy of slt-1 are as follows: nucleotides 26219 to 28163 and 28197 to 28294 in cosmid C26G2 are deleted. The second copy of slt-1 contains the following structure: nucleotides 28197 to 28294 in C26G2 are deleted, followed by a duplication of nucleotides 28300 to 28396 in C26G2 that begins 5 nucleotides after the deletion. Both copies of slt-1 are mutant, as confirmed by both DNA sequence and RT-PCR analysis of slt-1 mRNA. Scoring for homozygosity of the slt-1 allele by PCR is difficult because of the two copies of the gene and because the small deletion and the small duplication of the second copy of slt-1 are the same size. The mutant can be followed indirectly by X linkage (very closely linked to unc-3). It may be possible to make a specific primer within the duplicated region that detects a unique band in the slt-1 mutant.

kyIs140 [str-2::GFP + lin-15(+)] I. In ceh-36 mutants, both AWC cells fail to take on the AWC fate. ceh-36 is also required for the specification of the ASEL identity. ceh-36 encodes a member of the OTX/OTD family of homeodomain proteins. Do not distribute this strain; other labs should request it from the CGC. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.

kyIs140 [str-2::GFP + lin-15(+)] I. In ceh-26 mutants, both AWC cells fail to take on the AWC fate. ceh-36 is also required for the specification of the ASEL identity. ceh-36 encodes a member of the OTX/OTD family of homeodomain proteins. Do not distribute this strain; other labs should request it from the CGC. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.

ldrIs1 [dhs-3p::dhs-3::GFP + unc-76(+)]. eeeIs1 [unc-54p::Htt513(Q15)::YFP::unc-45 3'UTR]. Derived by crossing parental strains LIU1 and EAK102. YFP is fused to a fragment of mutant human Huntingtin protein; expression in body wall muscle cells. dhs-3::GFP is expressed mainly in intestinal cells and localized to intestinal lipid droplets.

ldrIs1 [dhs-3p::dhs-3::GFP + unc-76(+)]. eeeIs2 [unc-54p::Htt513(Q128)::YFP::unc-54 3'UTR]. Motility defect. Derived by crossing parental strains LIU1 and EAK103. YFP is fused to a fragment of mutant human Huntingtin protein; expression in body wall muscle cells of the pharynx in adults and punctate expression in body wall muscle cells of larval animals. dhs-3::GFP is expressed mainly in intestinal cells and localized to intestinal lipid droplets.

neIs9 [myo-3p::HA::rde-1 + rol-6(su1006)] X. ldrIs1 [dhs-3p::dhs-3::GFP + unc-76(+)]. Rollers. RDE-1 activity is rescued in the body-wall muscle, making animals RNAi-deficient except for body-wall muscle cells. Derived by crossing parental strains WM118 and LIU1. dhs-3::GFP is expressed mainly in intestinal cells and localized to intestinal lipid droplets.

rexEx3 [myo-3p::GFP::Halo + mec-7p::mRFP]. Pick GFP+ to maintain. Mosaic expression of green fluorescence (GFP) in body-wall muscle and red fluorescence (mRFP) in touch-receptor neurons.

rexEx6 [myo-3p::mCherry::P2A::Flag::UltraID::unc-54 3'UTR]. Pick mCherry+ to maintain. Mosaic expression of red fluorescence (mCherry) in body-wall muscle; punctate mCherry signals in some animals. P2A is the self-cleaving peptide sequence.

rabx-5(qa7800) mutants show decreased protein localization of YFP::RAB-5 in the cell bodies but increased protein localization within the dorsal cord in both synaptic and intersynaptic regions

juSi94 [GFP11::rps-18 + Cbr-unc-119(+)] II. Superficially wild-type. No fluorescence; carries only one portion of a split GFP reporter for visualization of ribosomes. Allows inducible GFP fluorescence of ribosomes when combined with GFP1-10 expression in tissue of choice. Reference: Noma et al Elife. 2017 Aug 2;6. pii: e26376. doi: 10.7554/eLife.26376.

juSi94 [rps-18p::GFP11::rps-18 + Cbr-unc-119(+)] II. juEx5375 [col-19p::GFP1-10 + ttx-3p::RFP]. Pick RFP+ to maintain. Expression of split GFP reporter labels ribosomes in the epidermis. Reference: Noma K, et al. Elife. 2017 Aug 2;6:e26376. doi: 10.7554/eLife.26376.

juSi94 [GFP11::rps-18 + Cbr-unc-119(+)] II. juEx5377 [myo-3p::GFP1-10 + ttx-3p::RFP]. Pick ttx-3::RFP to maintain. Muscle-specific expression of split GFP reporter allows visualization of ribosomes in muscle. Reference: Noma et al Elife. 2017 Aug 2;6. pii: e26376. doi: 10.7554/eLife.26376.

juSi94 [GFP11::rps-18 + Cbr-unc-119(+)] II. juEx5515 [unc-25p::GFP1-10 + unc-25p::mCherry::rab-3 + ttx-3p::RFP]. Pick ttx-3::RFP to maintain. GABAergic motor neuron-specific expression of split GFP reporter allows visualization of ribosomes in neurons, and GABAergic motor neuron-specific expression of mCherry::rab-3. Reference: Noma et al Elife. 2017 Aug 2;6. pii: e26376. doi: 10.7554/eLife.26376.

juSi123 [rpl-29::GFP] II. Strong GFP signal allowing visualization of ribosomes. GFP inserted at C-terminus of RPL-29. Reference: Noma et al Elife. 2017 Aug 2;6. pii: e26376. doi: 10.7554/eLife.26376.

juSi83 [GFP::rps-18 + Cbr-unc-119(+)] II. Homozygous lethal mutation balanced by GFP-marked translocation. Heterozygotes are WT GFP+ and segregate WT GFP+, Vul and dead eggs. Non-conditonal GFP-tagged ribosomes; array over-expressing N-terminally tagged rps-18 (small ribosomal subunit) partially rescues rps-18(ok3353) larval arrest (some animals will escape L1 arrest and develop to L3 stage). Reference: Noma et al Elife. 2017 Aug 2;6. pii: e26376. doi: 10.7554/eLife.26376.

juSi94 [GFP11::rps-18 + Cbr-unc-119(+)] II. juIs409 [rgef-1p::GFP1-10 + ttx-3p::RFP] IV. Pan-neuronal-specific expression of split GFP reporter allows visualization of ribosomes in neurons. Reference: Noma et al Elife. 2017 Aug 2;6. pii: e26376. doi: 10.7554/eLife.26376.

juIs438 [mec-4p::GFP1-10 + mec-4p::tagRFP] II. juSi94 [rps-18p::GFP11::rps-18]. Expression of split GFP reporter labels ribosomes in touch neurons. Generated in N2 background. Reference: Noma et al Elife. 2017 Aug 2;6. pii: e26376. doi: 10.7554/eLife.26376.

juSi94 [GFP11::rps-18 + Cbr-unc-119(+)] II. juIs463 [flp-13p::GFP1-10 + ttx-3p::RFP]. DD motor neuron-specific expression of split GFP reporter allows visualization of ribosomes in those neurons. Reference: Noma et al Elife. 2017 Aug 2;6. pii: e26376. doi: 10.7554/eLife.26376.

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.

juEx6916 [myo-3p::PH::miniSOG(Q103L) + myo-3p::mCherry + ttx-3::GFP]. Pick GFP+ to maintain. Expression of mCherry and PH-miniSOG (mini Singlet Oxygen Generator) in body wall muscles. Reference: Xu S & Chisholm AD. Sci Rep. 2016 Feb 10;6:21271.

ltSi953 [mec-18p::vhhGFP4::ZIF-1::operon-linker::mKate2::tbb-2 3'UTR + Cbr-unc-119(+)] II. GFP tag inserted into the C-terminus of the endogenous gip-2 locus using CRISPR-Cas9 engineering. Tissue-specific expression of GFP nanobody::ZIF-1 fusion promotes ubiquitylation and subsequent degradation of GFP-tagged gip-2 protein in touch receptor neurons. Touch receptor neurons are red labeled with mKate2. Reference: Development. 2017 Jul 15;144(14):2694-2701. PMID: 28619826.

ltSi953 [mec-18p::vhhGFP4::ZIF-1::operon-linker::mKate2::tbb-2 3'UTR + Cbr-unc-119(+)] II. GFP tag inserted into the C-terminus of the endogenous dhc-1 locus using CRISPR-Cas9 engineering. Tissue-specific expression of GFP nanobody::ZIF-1 fusion promotes ubiquitylation and subsequent degradation of GFP-tagged dhc-1 protein in touch receptor neurons. Touch receptor neurons are red labeled with mKate2. Reference: Development. 2017 Jul 15;144(14):2694-2701. PMID: 28619826.

Temperature sensitive sterility: maintain at 15-20C. prg-1(ju1574) mutant animals become sterile at the fifth generation grown at 25C. prg-1(ju1574) contains two mutations in the PIWI domain active site (RNaseH/slicer) [D583A, Y585A]. Mutation of the first conserved aspartate of the catalytic triad (D-D-H motif) to alanine (D583A) created an A-D-H motif which abolishes slicer activity in Argonaute proteins. WT: [GTCGGCTACGATCTGTACCACGACTCGACATTGAAAGGAAAAACT --> VGYDLYHDSTLKGKT] ju1574: [GTCGGCTACGcgCTGgctCAtGAtTCGACATTGAAAGGAAAAACT --> CGYALAHDSTLKGKT] Forward genotyping primer: GTAATGCTCGCTGACGACAA Reverse genotyping primer: TTGACGAACTGTGGAACCAA Reference: Kim KW, et al. Neuron. 2018 Feb 7;97(3):511-519.e6. doi: 10.1016/j.neuron.2018.01.014.

vab-2(ju1) has embryonic lethality (12%) and notched heads (about 40%). vab-2(ju1) is considered a null allele (W30opal), and was previously called efn-1. Vab, embryonic ventral enclosure defects, male ray fusions.

GFP reporter inserted into C-terminus of endogenous micu-1 locus. Diffuse GFP signals throughout the body. Reference: Tang NH, et al. Curr Biol. 2020 Jan 15. pii: S0960-9822(19)31694-X. doi: 10.1016/j.cub.2019.12.061.

Strong Vab-1 phenotype. About 50% embryonic lethality and about 30% larval lethality. Genetic null.

Vab. Notched Head. Distal tip cell Mig. Male tail ray and spicule defects. Males do not mate. About 50% larval lethality. H and B cell lineage defects. Received new stock Jan. 2006.

vab-2(ju1) has embryonic lethality (12%) and notched heads (about 40%). vab-2(ju1) is considered a null allele (W30opal). pka efn-1.

Intermediate Vab-1 phenotype. About 9% embryonic lethality and about 20% larval lethality. CB699 outcrossed 2X to N2 to make CZ414.

adEx1350 [kin-18::GFP + rol-6(su1006)]. Pick Rollers. Only about 10% transmission.

Bacteria. Comamonas sp., a bacterium on which C. elegans grows particularly well. Str-R. DA1877 is derived from a bacterium isolated from soil in the Dallas area by Boris Shtonda in 2002. That strain was called H39 in Avery, L, Shtonda, BB (2003), "Food transport in the C elegans pharynx", J Exp Biol 206: 2441-2457. It was identified as genus Comamonas by 16S rDNA sequencing, as described in the paper. [NOTE: Watson, et al (PMID: 24529378) report using 16S rRNA gene sequence to identify this strain as Comamonas aquatica.] L. Avery isolated a spontaneous streptomycin-resistant variant by selecting for growth in LB broth + 200 ug/ml streptomycin sulfate. This strain, when spread on NGMSR plates, gave rise to faster-growing papillae; one of these was streaked out to get DA1877. Biosafety Level: BSL-1.

Hemiasterlin resistant. Maintain under normal conditions. Reference: Zubovych IO, et al. Mol Biol Cell. 2010 Mar 15;21(6):956-69.

Hemiasterlin resistant. Maintain under normal conditions. Reference: Zubovych IO, et al. Mol Biol Cell. 2010 Mar 15;21(6):956-69.

Clumps. npr-1 pka bor-1.

Causes worms to aggregate (Bor). Social.

Clumps. Found in strain RC301. See 1987 Worm Meeting Abstract Book page 162. npr-1 pka bor-1. For whole-genome sequence-verified wild strains, please request from the Caenorhabditis Natural Diversity Resource (www.caendr.org).

Long. Clumps. npr-1 pka bor-1.