Search Strains

otEx7230 [ets-5p::TagRFP + rol-6(su1006)]. Transgene contains 3.25 kb of ets-5 promoter fragment. GFP tag inserted into endogenous inx-6 locus.

otEx7244 [mgl-2(7.9k)::GFP + inx-6(prom18)::TagRFP + pha-1(+)]. 7.9 kb fragment used in otEx7244 reporter covers full mgl-2 5' promoter region. Maintain at 25C to retain array. See description of strain OH15262 for full description of otIs669 NeuroPAL (Neuronal Polychromatic Atlas of Landmarks) transgene. 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

otEx8029 [ceh-19(prom 2)::GFP + pha-1(+)]. Maintain 25C to select for array. Modified ceh-19 promoter fragment drives bright expression of GFP in MC L/R. There is also expression in an additional unidentified cell in the tail but this expression is much much dimmer and typically not visible under the dissecting scope. GFP expression in MC can be used to isolate MC by FACS. Used by CeNGEN project for RNA-Seq (https://www.cengen.org/).

ubIs6 [hsp16.1::hsp-16A::lacZ + rol-6(su1006)]. Transgene contains a translational fusion to lacZ in which a Sau 3A fragment containing the intergenic region of a hsp16-48 and hsp16-1 gene pair of locus hsp16A was fused in-frame to lacZ to the Sau 3A site in exon of hsp16-1. The contruct contains the SV40 nuclear localization signal fused to the beginning of the lacZ coding region. Published as ubIn6.

ccEx3163 [unc-39p::unc-39 gene (genomic fragment)::GFP::unc-39 3'UTR + rol-6(su1006)]. Maintain by picking Rollers. ccEx3163 carries unc-39 construct pJLY99.1.

syb3311 created by the insertion of a tandem array containing seven copies of the GFP11 beta-strand (gfp11x7) in the endogenous casy-1 locus; can be crossed with reporter lines expressing the complementing split GFP fragment (gfp1-10) in specific cell types to facilitate tissue-specific labeling. Split-GFP tag inserted into endogenous casy-1 locus using CRISPR/Cas9 with two guide RNAs simultaneously. Reference: Ding C, et al. Elife. 2022 Mar 14;11:e73557. PMID: 35285800.

srm-1(syb8127[dpy-10 sgRNAsite::unc-25 fragment with tataa sites::dpy-10 sgRNAsite::SL1-aaaa::FLP D5::let-858 3’utr]) (IV:5015000). FLP D5 recombinase driver expressed from a fragment of the unc-25 promoter that expresses in RME neurons. Recombination was only modestly penetrant. Promoter construct contains dpy-10 sites allowing for a straightforward exchange of the promoter. Reference: Rossi L, et al. Curr Biol. 2025 Apr 20:S0960-9822(25)00355-0. doi: 10.1016/j.cub.2025.03.039. PMID: 40273913.

syEx429 [ipp-5p::GFP + rol-6(su1006)]. Maintain by picking Rollers. Construct pIP5 contains 2.0 kb promoter fragment upstream of ipp-1 driving GFP expression in distal spermatheca (in adults); pharynx and vulva (all stages). [NOTE: the syEx429 array in this strain was previously incorrectly annotated as carrying ipp-1p::GFP. The array contains an ipp-5p::GFP transgene.]

syEx475 [myo-3p::unc-68(see following comments) + myo-2p::GFP + pUC-19]. Pick GFP+ animals to maintain. myo-3p::unc-68 transgene was produced by injecting pEM23 (myo-3 promoter + unc-68 exons 1-8) + 18 kb unc-86 PCR fragment (start codon through nucleotide 18090) + pLM511 (unc-68 position 11989 to the end); fragments were recombined in vivo.

ytEx100 [mel-47(3245 bp rescuing fragment) + rol-6(su1006)]. Maintain by picking Rollers. Animals which have lost the transgene look wt but are fully penetrant Mel. Mutant embryos arrest with less than 100 cells.

etEx1 [rol-6(su1006) + W02H5.8(2kb)::GFP]. Pick Rollers to maintain. 2 kb fragment of W02H5.8 was cloned intoFire Lab vector pPD95.69. This strain has been used by the Worm Atlas to study the development of the intestine.

pwIs503 [vha-6p::mans::GFP + Cbr-unc-119(+)]. This strain expresses an intestine-specific GFP marker for the Golgi apparatus (a fragment of C. elegans alpha-mannosidase II (F58H1.1, first 82 aa including signal sequence/TM-anchor domain as in Rolls et al., 2002). This fusion protein is expressed under the control of the vha-6 promoter.

8xMS2 tag inserted at C-terminus of endogenous C42D4.3 locus. zjuEx2144 [semo-1p::MCP::24×Suntag + col-19p::scFv::sfGFP + ttx-3p::RFP]. Pick ttx-3::RFP+ animals to maintain. MS2-based signal Amplification with Suntag System (MASS). Enhanced MS2-based single-molecule RNA imaging system utilizes Suntag signal amplifier. Suntag is a 19 amino acid protein tag that binds to its specific single-chain variable fragment (scFv) antibody. zjuEx2144 transgene expression provides MS2 coat protein (MCP) fused to 24xSuntag and scFv tagged with GFP. When all the required elements of the MASS (MS2, MCP, 24xSuntag, and scFv antibodies) are present, bright GFP foci will mark the tagged RNA. Reference: Hu Y, et al. eLife. 2023 Mar 3;12:e82178. doi: 10.7554/eLife.82178. PMID: 36867026.

8xMS2 tag inserted at C-terminus of endogenous mai-1 locus. zjuEx2144 [semo-1p::MCP::24×Suntag + col-19p::scFv::sfGFP + ttx-3p::RFP]. Pick ttx-3::RFP+ animals to maintain. MS2-based signal Amplification with Suntag System (MASS). Enhanced MS2-based single-molecule RNA imaging system utilizes Suntag signal amplifier. Suntag is a 19 amino acid protein tag that binds to its specific single-chain variable fragment (scFv) antibody. zjuEx2144 transgene expression provides MS2 coat protein (MCP) fused to 24xSuntag and scFv tagged with GFP. When all the required elements of the MASS (MS2, MCP, 24xSuntag, and scFv antibodies) are present, bright GFP foci will mark the tagged RNA. Reference: Hu Y, et al. eLife. 2023 Mar 3;12:e82178. doi: 10.7554/eLife.82178. PMID: 36867026.

zjuEx2429 [col-19p::BFP::8xMS2 + semo-1p::MCP::24×Suntag + col-19p::scFv::sfGFP + myo-2p::GFP]. Pick GFP+ (pharynx) animals to maintain. MS2-based signal Amplification with Suntag System (MASS). Enhanced MS2-based single-molecule RNA imaging system utilizes Suntag signal amplifier. Suntag is a 19 amino acid protein tag that binds to its specific single-chain variable fragment (scFv) antibody. When all the required elements of the MASS (MS2, MCP, 24xSuntag, and scFv antibodies) are present, bright GFP foci will mark the tagged RNA. Reference: Hu Y, et al. eLife. 2023 Mar 3;12:e82178. doi: 10.7554/eLife.82178. PMID: 36867026.

leIs6 [vha-8::lacZ + rol-6(su1006)]. Rollers. This strain shows B-galactosidase expression in the excretory cell and lateral nuclei of the hypodermis adjacent to the anterior and posterior branches of the excretory cell. The second component to this expression pattern appears to be localized in the hypodermis adjacent to the excretory canals. B-galactosidase was seen in the nuclei from late embryogenesis through to the adult. plasmid name: pUL#64A1. Partial Sau3A fragments cloned into BamH1 site of vector. Plasmid backbone: pPD22.11. A 2.7 Kb HindIII fragment from the insert of pUL#64A1 hybridized to YACs Y55E11, Y53F3, Y50C9, and Y73B6 which overlap on LGIV. References: Young JM, Hope IA. Dev Dyn. 1993 Feb;196(2):124-32. Hope IA, et al. Mol Gen Genet. 1998 Nov;260(2-3):300-8.

ojIs34 [GFP::car-1 + unc-119(+)]. N'-tagged GFP::CAR-1 (Y18D10A.17) fusion. Labels P-granules and small cytoplasmic puncta in all cells. Bombardment with pNL1.6::GFP::unc-119 (pfj-1::pie-1 promoter driving GFP::Y18D10A.17 (N-terminal) with unc-119 rescuing fragment).

qaIs8400 [let-858p::Ov-GST-3 + rol-6(su1006)]. Called AK1 in the reference article. The Ov-GST-3 gene was amplified from genomic DNA of O. volvulus with 1µM of the sequence specific primer 5'Klon and 3'Klon (5'Klon: 5'-GGCGTACGATGTCAAGATTTCCTCAACAAG-3'; 3'Klon: 5'-GGTCTAGATTTATTTAGGAATGATTGAATCGGTCG-3'; representing bases 4 - 25 and the complementary sequence of bases 821 - 841 of the published Ov-GST-3 cDNA (AF203814); bold underlines indicate restriction sites for Pfl23II (SplI) and XbaI, respectively; dotted underline indicates the start codon for translation; italics indicates the conserved sequence for the polyadenylation signal for transgenic transcript processing; the 8 5'-nucleotides of primer 3'Klon and the fourteen 5'-nucleotides of primer 5'Klon do not correspond to the template and introduce the sequences to the amplicon), 200 µM of each deoxynucleotide (Gibco BRL) and 2.5 units of Taq polymerase (Gibco BRL). After an initial denaturation of 3 minutes at 93°C, 35 cycles of annealing at 55°C for 1 minute, synthesis at 72°C for 2 minutes and a 1 minute denaturation at 93°C were performed, followed by a final extension at 72°C for 5 minutes. The genomic Ov-GST-3 fragment obtained by PCR (see above) was ligated into the pGEM-T Easy vector (Promega) by TA-cloning, cleaved with the restriction enzymes Pfl23II (SplI) and XbaI (restriction sites introduced by the primer) and inserted between the unique Pfl23II (SplI) and XbaI sites of the vector pPD103.05 (kindly provided by A. Fire). The sequence of the genomic Ov-GST-3 fragment in the resulting plasmid pAK1 was confirmed by automated dye terminator, dideoxy sequencing (ABI Prism 377TM Sequencer, PE Applied Biosystems) using the PCR primers (see above). The pAK1 DNA was injected in combination with the marker plasmid pRF4 [rol-6(su1006)] into the gonads of N2 C. elegans at a concentration of approximately 100 ng/µl for each plasmid. Transgenic worms were identified by the selectable Roller marker phenotype and the stable transmitting line AK1ex (AK1 extrachromosomal) was established. Integration of the extrachromosomal arrays was achieved by irradiation of AK1ex worms with 3600 rad (1 rad = 0.01 Gy) of x-rays (x-ray chamber: RUM 9421-070-77002, Philips, Netherlands; dosimeter: PTW-SN4, PTW, Germany). The progeny of these worms was then screened for 100% transmittance of the Roller phenotype to obtain the C. elegans line AK1int (AK1 integrated) with the chromosomally integrated transgenes.

wp127 created by the insertion of a tandem array containing seven copies of the GFP11 beta-strand (gfp11x7) in the endogenous ric-7 locus; can be crossed with reporter lines expressing the complementing split GFP fragment (gfp1-10) in specific cell types to facilitate tissue-specific labeling. Reference: Wu Y, et al. bioRxiv [Preprint]. 2023 Jul 12:2023.07.12.548706. doi: 10.1101/2023.07.12.548706. Update in: J Cell Biol. 2024 May 6;223(5): PMID: 37502914.

hpIs190 [nmr-1p::D3cpv + lin-15(+)]. Strong fluorescent marker for Ca2+ imaging (FRET) AVA, AVE, AVD, RIM and a few other neurons. Construct includes 5.1 kb nmr-1 genomic promoter sequence upstream of the ATG start codon but a excludes a 2 kb fragment encoding cex-1 that interferes with calcium imaging (Kawano and Zhen, unpublished observation). Reference: Kawano T, et al. Neuron. 2011 Nov 17;72(4):572-86. PMID: 22099460

hpIs481 [ceh-12p::tomm20::miniSOG::SL2::BFP + unc-129(DB)p::tomm20::miniSOG::SL2::BFP + lin-15(+)]. Maintain in the covered box to avoid unnecessary exposure to ambient light. Stimulation with blue light (460 nm LED light for 30 min at 4 Hz with 2 mW/mm2), induces mitochondrial-miniSOG ablation of B-class motor neurons. During neuron ablation, it is recommended to keep the lid of the plate open and use a heat disipator to keep the air cool. unc-129(DB)p is a fragment of the unc-129 promoter driving expression in only DB motor neurons (described in Colavita et al., Science 1998 31;281(5377):706-9). The ceh-12 promoter drives expression in VB motor neurons. Generated in N2 background. Reference: Gao S, et al. eLife 2018 Jan 23;7:e29915. doi: 10.7554/eLife.29915.

hpIs583 [acr-2(s)p::tomm20::miniSOG::SL2::RFP]. Maintain in the covered box to avoid unnecessary exposure to ambient light. Stimulation with blue light (460 nm LED light for 30 min at 4 Hz with 2 mW/mm2), induces mitochondrial-miniSOG ablation of A- and B-class motor neurons. During neuron ablation, it is recommended to keep the lid of the plate open and use a heat disipator to keep the air cool. acr-2s(p) is a 1.8 kb fragment of the acr-2 promoter driving expression in only A- and B- class motor neurons (described in Jospin et al, 2009 PLoS Biol. Dec;7(12):e1000265). Generated in N2 background. Reference: Gao S, et al. eLife 2018 Jan 23;7:e29915. doi: 10.7554/eLife.29915.

hpSi38 [flp-14(+) + NeoR]. Superficially wild-type. Neomycin-resistant. hpSi38 is a single copy miniMos insertion a wild-type genomic fragment containing flp-14 and fully rescues the flp-14 mutant phenotype. Reference: Lim MA, et al. Elife. 2016 Nov 18;5:e19887. doi: 10.7554/eLife.19887. PMID: 27855782

hpSi38 [flp-14(+) + NeoR]. hpIs201[ceh-10p::GFP + lin-15(+)]. GFP expression in RID neuron. Neomycin-resistant. hpSi38 is a single copy miniMos insertion a wild-type genomic fragment containing flp-14 and fully rescues the flp-14 mutant behavioral defects and RID axon defects. Reference: Lim MA, et al. Elife. 2016 Nov 18;5:e19887. doi: 10.7554/eLife.19887. PMID: 27855782

Animals display reduced body bends and thrash rates, slow growth, and fragmented mitochondria. cjn20 is a 2629 bp deletion removing nucleotides 25-2654 of the fzo-1 locus. Originally published as cjn020. Reference: Byrne JJ, et al. Cell Mol Life Sci. 2019 May;76(10):1967-1985. (PMID 30840087)

Bacteria. E18 eat-4 promoter/GFP translational fusion, fused Klenowed ScaI/PstI fragments of pRE4-4-YK-Sac_Pst (~4.4kb) with TU#62(~2.2kb), checked loss of PstI site. PKA pRE4-GFP. Biosafety Level: BSL-1.

olaEx987 [ttx-3p::mCherry::rab-3 + hlh-17p::CD4::GFP1-10 + ttx-3p::CD4::GFP11 + unc-122p::GFP]. Maintain by picking animals with GFP expression in coelomocytes. olaEx987 labels AIY presynaptic sites with mCherry, and AIY and CEPsh contact with GFP. oleEx987 contains GRASP (GFP Reconstitution Across Synaptic Partners) constructs using two GFP fragments, GFP1-10 and GFP11, that can reconstitute a functional GFP molecule only when they are in close proximity. Reference: Shao Z, et al. Cell. 2013 Jul 18;154(2):337-50.

olaEx1316 [ttx-3p::CD4::GFP11 + glr-3p::CD4::GFP1-10 + ttx-3p::mCherry::rab-3 + unc-122p::GFP]. Maintain by picking animals with GFP expression in coelomocytes. olaEx1316 labels AIY presynaptic sites with mCherry, and AIY and RIA contact with GFP. oleEx1316 contains GRASP (GFP Reconstitution Across Synaptic Partners) constructs using two GFP fragments, GFP1-10 and GFP11, that can reconstitute a functional GFP molecule only when they are in close proximity. Reference: Shao Z, et al. Cell. 2013 Jul 18;154(2):337-50.

otEx7353 [UPN::tagRFP::TRA-1(active) + rol-6(su1006)]. Rollers. Pick Rollers to maintain. Nervous system-specific expression of a TRA-1 gain-of-function construct. UPN is a concatenated panneuronal promoter (containing promoter fragments from unc-11, rgef-1, ehs-1, and ric-19). TRA-1(active) is a shortened version of the TRA-1A cDNA (860aa) predicted to encode the proteolytically activated version of TRA-1A generated by C-terminal cleavage in hermaphrodites (Schvarzstein and Spence 2006).

Bacteria. Kanamycin-resistant E. coli. cytR- mutation in OP50 background causes elavated nucleotide levels similar to HT115. A mutation in CytR- was introduced into the OP50 strain by recombineering. Bacterial cells were transformed with pSIM8 plasmid before using as hosts for recombineering. Targeting substrate DNA fragments were amplified by PCR and subcloned into TOPO cloning vector for sequence verification before being electroporated into the host bacterial cells. The primer set used for cloning targeting cytR substrate DNAs (to replace cytR+ with the cytR- mutation identified in HT115 strain): 5'- GCCAGGCGAGGAGTGAGTGTG-3'/5'-AGCGGCGGGCCTTTGACC-3'. Reference: Chi C, et al. Genes Dev. 2016 Feb 1;30(3):307-20.

leIs1 [pes-1::lacZ + rol-6(su1006)] V. Rollers. B-galactosidase expression begins in a subset of cells of the AB lineage which go on to produce muscle, nerve and hypodermal cells. B-galactosidase is also present within the D lineage until the cells move anteriorly to become body wall cells. Expression is also apparent in Z1 and Z4 which go on to form part of the somatic gonad. plasmid name: pUL#24C7. Plasmid backbone: pPD22.11. Partial Sau3A fragments cloned into BamH1 site of vector.

leIs8 [unc-5::lacZ + rol-6(su1006)]. Rollers. B-galactosidase expression was observed in the spermathecaeand the three rectal epithelial cells. Staining in the rectal area first observed in L1 larvae whilst expression in the spermathecae appeared as the structure formed in L4 larvae. Variable staining was also seen throughout the uterus. In the mature gonad staining appeared to be in two sets of two toroidal epithelial cells Ut-1 and Ut-2. Staining was also observed in the large H shpaed Use cell which attaches the uterus to the seam cells and the four epithelial cells Ut-1 and Ut-2. The Uv cells did not appear to stain. Individual worms often just showed one component of this expression. In males the expression was observed to be displayed in all or part of the procodeum. plasmid name: pUL#38E12. plasmid backbone: pPD22.11. Partial Sau3A fragments cloned into BamH1 site of vector.

vbaIs56 [eef-1A.1p::VenusN::nrde-3] I. vbaIs55 [eef-1A.1p::VenusC::nrde-3] II. Maintain at 20C or cooler; germline mortal (Mrt) at 25C. N-terminal and C-terminal fragments of the fluorescent protein Venus are fused to NRDE-3 to facilitate trimolecular fluorescence complementation. In the cytoplasm or nucleus, local concentration of NRDE-3 molecules does not allow fluorescence complementation, thus reducing background fluorescence; once bound on the target transcript, VenusN::NRDE-3 and VenusC::NRDE-3 are in sufficient proximity to allow for fluorescence complementation, labeling transcription sites of dsRNA gene targets. Superficially wild-type. Reference: Toudji-Zouaz A, et al. Nucleic Acids Research. 2021 Jun 9;gkab469. doi: 10.1093/nar/gkab469. PMID: 34107044.

nIs281 [myo-2::RFP] integrated near qC1. Recombination between nIs281 and qC1 has been reported. Fails to complemement all markers on qC1. Heterozygotes are WT and segregate WT, Dpy Sterile, and tm3574 homozygotes. gsr-1(tm3574) is embryonic lethal. gsr-1(m+,z-) animals are viable and reach adulthood with no visible phenotype and lay eggs that invariably arrest at the pregastrula stage; they are slightly short-lived, have increased mitochondrial fragmentation, decreased mitochondrial DNA content and have induced mitochondrial UPR measured by hsp-6::GFP levels. gsr-1(m-,z-) have aberrant perinuclear distribution of interphasic chromatin. NOTE: The RFP-labeled balancer is reportedly not entirely stable in this strain and will occasionally segregate recombinants of two types: sterile RFP+ animals (most likely homozygous qC1 [nIs281] worms that are able to grow to adulthood but do not develop germline), and non-RFP animals that lay viable progeny. Maintain by picking fertile RFP+ animals and confirming that non-RFP progeny lay 100% arrested embryos. Reference: Mora-Lorca JA, et al. Free Radic Biol Med. 2016 Jul;96:446-61.