Search Strains

byIs194 [rab-3p::F3(delta)K280 I277P I380P + myo-2p::mCherry]. Pan-neuronal over-expression of the F3 pro aggregation fragment of the human Tau protein with K280 deleted and two isoleucines to proline substitutions in the hexapeptide motifs of the repeat region (line B). These mutations abrogate the aggregation, making this strain an anti-aggregation control for BR5270. Reference: Fatuouros C, et al. Hum Mol Genet. 2012 Aug 15;21(16):3587-603.

byIs161 [rab-3p::F3(delta)K280 + myo-2p::mCherry]. bkIs10 [aex-3p::h4R1NtauV337M + myo-2p::GFP]. Strain co-expressing the F3(delta)K280 pro-aggregation Tau fragment and full-length Tau in all neurons. Worms have severe locomotion defect and slow growth. Red and green fluorescence in the pharynx due to the co-injection markers. bkIs10 contains an integrated transgene encoding the 1N4R isoforms of human tau with the 337M FTDP-17 mutation. Expression is driven by the pan-neuronal promoter aex-3. Over-expression of this transgene results in a pronounced Unc phenotype. Derived by additional outcrossing of BR5485. Reference: Fatouros C, et al. Hum Mol Genet. 2012 Aug 15;21(16):3587-603.

byEx1375 [endu-2p::endu-2::eGFP + myo-2p::mCherry]. Pick mCherry+ animals to maintain array. Transgene rescues mortal germline (Mrt) phenotype of endu-2(tm4977). Reference: Qi W, et al. (2020) A secreted endoribonuclease ENDU-2 from the soma protects germline immortality in C. elegans. BioRxiv. doi: 10.1101/2020.12.04.408260. Accepted by Nature Communications.

byEx1551 [vha-6p::endu-2::eGFP::3xFLAG + myo-2p::mCherry]. Pick mCherry+ animals to maintain array. Transgene provides intestinal rescue of endu-2(tm4977) that also rescues mortal germline (Mrt) phenotype. Reference: Qi W, et al. (2020) A secreted endoribonuclease ENDU-2 from the soma protects germline immortality in C. elegans. BioRxiv. doi: 10.1101/2020.12.04.408260. Accepted by Nature Communications.

byEx1795 [unc-119p::endu-2::eGFP::3xFlag + rol-6(su1006)]. Pick Rollers to maintain. Transgene provides neuronal rescue of endu-2(tm4977) that also rescues mortal germline (Mrt) phenotype. Reference: Qi W, et al. (2020) A secreted endoribonuclease ENDU-2 from the soma protects germline immortality in C. elegans. BioRxiv. doi: 10.1101/2020.12.04.408260. Accepted by Nature Communications.

antIs30 [attP-f + Cbr-unc-119(+) + glh-2p::phiC31 + rol-6(partial) + myo-2p::GFP + attP-r] II. antIs30 was inserted into ttTi5605 on LG II using MosSCI. GFP expression in pharynx is very weak (as it is single copy) and is easiest to see during the L1-L3 stages. This strain contains a phiC31 docking site and can be used for precise single-copy integration of transgenes via recombination mediated cassette exchange. The docking site contains inverted phiC31-attP sites flanking phiC31 integrase expressed from the glh-2 germline promoter. Integration constructs need to have inverted phiC31-attB sites that flank the intended sequence to be inserted. Reference: Yang FJ, et al. "phiC31 integrase for recombination mediated single copy insertion and genome manipulation in C. elegans." Genetics 2021.

antIs31 [attP-f + Cbr-unc-119(ant40) + glh-2p::phiC31 + rol-6(partial) + myo-2p::GFP + attP-r] II. Unc. antIS31 has been found to self-excise; check for GFP expression periodically to retain the insertion. GFP expression in pharynx is very weak (as it is in single copy) and is easiest to see during the L1-L3 stages. This strain contains a phiC31 docking site and can be used for precise single-copy integration of transgenes via recombination mediated cassette exchange. The docking site contains inverted phiC31-attP sites flanking phiC31 integrase expressed from the glh-2 germline promoter. Integration constructs need to have inverted phiC31-attB sites that flank the intended sequence to be inserted. antIs31 was derived by CRISPR/Cas9 knockout of Cbr-unc-119 in antIs30 creating ant40, a 691 bp deletion in Cbr-unc-119. Because antIs31 does not rescue unc-119(ed3), BRC566 facilitates the use of Unc-119 rescue as a selection marker for transgene insertions. Reference: Yang FJ, et al. "phiC31 integrase for recombination mediated single copy insertion and genome manipulation in C. elegans." Genetics 2021.

ozEx76 [cdk-4p::CDK-4::GFP + sur-5::DsRed)]. Maintain by picking DsRed+. ozEx76 is unstable; strain exhibits high levels of lethality and sterilty. ~10% of progeny are fertile. Reference: Fox PM, et al. Development. 2011 Jun;138(11):2223-34.

Heterozygotes are wild-type and segregate WT heterozygotes, Unc (unc-13 gld-1 homozygotes), and Dpy (hT2 homozygotes; the bli-4 mutation is suppressed by dpy-18). XX Uncs have tumorous germline and are sterile; XO Uncs are cross fertile (though they don't mate due to the Unc mutation). q485 is the canonical allele of gld-1. It behaves like deletions of the locus in complementation tests and thus is genetically null. Molecularly, it is a deletion of 82 bases and fails to produce gld-1 RNA and protein.

Heterozygotes are wild-type and segregate WT heterozygotes, Unc (gld-2 gld-1; unc-32 glp-1 homozygotes), and Dpy (hT2 homozygotes; the bli-4 mutation is suppressed by dpy-18). Check Unc-32 animals for tumors to confirm presence of glp-1 in the line. glp-1(q175) is nonsense R191 > stop (opal).

Homozygous sterile mutation balanced by GFP- and dpy-10-marked inversion. Heterozygotes are wild-type with relatively dim pharyngeal GFP signal, and segregate WT dim GFP, Dpy bright GFP (mIn1 homozygotes), and non-GFP ok308 homozygotes (mostly sterile or Mel, but can be slowly propagated at 20C). Pick WT dim GFP and check for correct segregation of progeny to maintain.

Heterozygotes are slow growing with WT phenotype. Hets segregate more slow growing WT, embryonic lethals (ozDf1/ozDf1) and DpyUncs which are sick and have a maternal effect lethal (none of the offspring from the DpyUncs survive to reproduce). Maintain by picking WT.

Homozygous sterile mutation balanced by GFP- and dpy-10-marked inversion. Heterozygotes are wild-type with relatively dim pharyngeal GFP signal, and segregate WT dim GFP, Dpy bright GFP (mIn1 homozygotes), and non-GFP nos-2 nos-1 homozygotes (segregate many dead embryos). Pick wild-type dim GFP and check for correct segregation of progeny to maintain. Reference: Hansen D, et al. Development. 2004 Jan;131(1):93-104.

Homozygous sterile mutation balanced by bli-4- and GFP-marked translocation. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP sterile oz273 homozygotes. Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain.

glp-1(oz264) is a gain-of-function allele. Homozygous sterile mutation balanced by bli-4- and GFP-marked translocation. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP sterile oz273; oz264 homozygotes. Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain.

Segregates WT RFP+ heterozygotes, viable non-RFP nemp-1(oz534) homozygotes, and RFP+ Dpy. Maintain by picking wild-type RFP+. About 10-20% of nemp-1(oz534) homozygotes are sterile.

Segregates WT RFP+ heterozygotes, viable non-RFP nemp-1(oz535) homozygotes, and RFP+ Dpy. Maintain by picking wild-type RFP+. About 10-20% of nemp-1(oz535) homozygotes are sterile.

kqEx73 [pat-3(sp) + rab-3::RFP + cki-1::GFP]. Pick RFP+ to maintain. kqEx73 carries a form of pat-3 gene with splicing defects; rescues pat-3 null allele. pat-3(sp) is a frameshift mutation in the splice acceptor region (ag to aa) that abolishes conserved interaction domains such as the NPxY motifs and creates a splice variant with an extra 19 amino acids. The pat-3(sp) animals not only produce mutant pat-3, but also express the regular splice form due to utilization of an unusual splice acceptor. Abnormal Distal Tip Cell migration and pat-3 gene splicing (intron 7) defects. Reference: Kihira S, et al. PLoS One. 2012;7(8):e42425.

Mild motility and gonad migration defects. pat-3(kq8041) is an engineered Y804A substitution of the membrane distal tyrosine in the cytoplasmic domain. Reference: Hanna J, et al., microPublication Biology. 10.17912/micropub.biology.000291. https://www.micropublication.org/journals/biology/micropub-biology-000291

Motility and cell (DTC) migration defects. pat-3(kq8042) is an engineered Y804E substitution of the membrane distal tyrosine in the cytoplasmic domain. Reference: Hanna J, et al., microPublication Biology. 10.17912/micropub.biology.000291. https://www.micropublication.org/journals/biology/micropub-biology-000291

Mild motility and cell migration defects. pat-3(kq8043) is an engineered Y804F substitution of the membrane distal tyrosine in the cytoplasmic domain. Reference: Hanna J, et al., microPublication Biology. 10.17912/micropub.biology.000291. https://www.micropublication.org/journals/biology/micropub-biology-000291

zbIs2 [pie-1p::lifeact::RFP::pie-1 3' UTR + unc-119(+)]. Lifeact tag labels F-actin without interfering F-actin dynmics. The strain has never been officially published; however, a GFP version of this transgene is described in Pohl C & Bao Z. Dev Cell. 2010 Sep 14;19(3):402-12. PMID: 20833362.

Wild type hermaphrodites and males which produce WT, Dpy, Unc and DpyUnc progeny due to mating or loss of the duplication. Pick WT hermaphrodites and males to maintain.

Heterozygotes are WT and segregate WT, DpySteriles and dead eggs. Pick wild-type heterozygotes to maintain. ct281 homozygotes show Nob phenotype: approximately 80% of homozygous embryos arrest at about the time of hatching with fairly normal anterior development but a severely deformed posterior with a variable knob-like shape; approximately 20% fail to enclose and do not hatch. ct281 is a 4.7kb deletion removing intron 5, exon 6, and the 3'UTR of the pal-1 gene. Reference: Edgar LG, et al. Dev Biol. 2001 Jan 1;229(1):71-88.

Heterozygotes are WT and segregate WT, DpySteriles and dead eggs. Pick wild-type heterozygotes to maintain. ct224 homozygotes show Nob phenotype: approximately 80% of homozygous embryos arrest at about the time of hatching with fairly normal anterior development but a severely deformed posterior with a variable knob-like shape; approximately 20% fail to enclose and do not hatch. ct224 is a 4.2kb deletion removing exon 1 through exon 6 of the pal-1 gene. Reference: Edgar LG, et al. Dev Biol. 2001 Jan 1;229(1):71-88.

Temperature-sensitve. Maintain at 15C. Slight Maternal Effect Lethal (Mel) at 15C, more pronounced at 20C. Highly penetrant Mel at 25C and a fraction of the survivors have reversed left-right organs.

C. briggsae strain. Hermaphrodites are variably self-sterile, which is overcome by mating to males of the same genotype. From BC1991.

ctIs33 [pal-1::GFP + rol-6(su1006)]. Heterozygotes are WT and segregate WT, DpySteriles and dead eggs. Pick wild-type heterozygotes to maintain. ct224 homozygotes show Nob phenotype: approximately 80% of homozygous embryos arrest at about the time of hatching with fairly normal anterior development but a severely deformed posterior with a variable knob-like shape; approximately 20% fail to enclose and do not hatch. ct224 is a 4.2kb deletion removing exon 1 through exon 6 of the pal-1 gene. ctIs33 carries a non-rescuing pal-1::GFP fusion containing ~7kb 5' of the SL1 splice site through part of exon 5 fused to GFP. GFP expression is primarily embryonic and limited to a few cells; not visible except at high magnification. Reference: Edgar LG, et al. Dev Biol. 2001 Jan 1;229(1):71-88.

ctIs39 [hbl-1p::GFP::NLS::hbl-1 3'UTR + rol-6(su1006)]. Rollers. Reporter encodes the first 133 amino acids of HBL-1 followed by GFP with SV40 NLS and 1.4 kb of hbl-1 3' UTR. Reference: Fay DS, et al. Dev Biol. 1999 Jan 15;205(2):240-53.

ctIs40 [dbl-1(+) + sur-5::GFP]. Lon. dbl-1 over-expressing line from injection of constructs ZC421 and pTG98.

Maintain at 15C. Temperature-sensitive maternal effect, gastrulation defective. 100% of embryos arrest without gastrulating at 25C.

svDp1 [sur-5::GFP] (III;f). svDp1 was derived by insertion of a sur-5::GFP marker into sDp3(III;f). Pick GFP+ wild-type to maintain. svDp1 rescues ct224. ct224 homozygotes (lacking GFP expression) show Nob phenotype: approximately 80% of homozygous embryos arrest at about the time of hatching with fairly normal anterior development but a severely deformed posterior with a variable knob-like shape; approximately 20% fail to enclose and do not hatch. The duplication is lost in about 30-40% of embryos. Reference: Edgar LG, et al. Dev Biol. 2001 Jan 1;229(1):71-88.

Deficient in synthesis of ether-linked lipids. Contains high content of saturated fatty acids. Reference: Shi X, et al. J Lipid Res. 2016 Feb;57(2):265-75.

Deficient in synthesis of ether-linked lipids. Contains high content of saturated fatty acids. Reference: Shi X, et al. J Lipid Res. 2016 Feb;57(2):265-75.

Deficient in synthesis of ether-linked lipids. Contains high content of saturated fatty acids. Reference: Shi X, et al. J Lipid Res. 2016 Feb;57(2):265-75.

zdIs5 [mec-4p::GFP + lin-15(+)] I. mec-4::GFP is expressed in touch neurons. Null allele of scrm-1: 2501 bp deletion and 7 bp insertion (CACACAT) removes the entire scrm-1 coding sequence (position 11688933 - 11691433 of chromosome I).

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)

vtIs7 [dat-1p::GFP]. Integrated reporter with bright GFP observable in all dopaminergic neurons and processes. No behavioral changes have been noted in relation to transgene integration. DA neuron degeneration is evident with easily detectible loss of GFP expression (e.g. Hardaway et al, J. Neurosci, 2015). Reference: Nass, R., et al. (2002). "Neurotoxin-induced degeneration of dopamine neurons in Caenorhabditis elegans." Proc Natl Acad Sci USA 99(5): 3264-3269.

This strain is tolerant to acute treatment of ethanol. The severity and incidence of stress-induced tremors are greater than in wild-type. Reference: Jee C, et al. Genes Brain Behav. 2013 Mar;12(2):250-62.

egIs1 [dat-1p::GFP]; reportedly maps to LG IV. Bright GFP observable in dopamine neuronal soma and processes. For some reason this strain is resistant to neurotoxic effects of 6-OHDA compared to an independent strain BY200 (Nass et al., 2002). Or maybe BY200 is more sensitive to 6-OHDA due to its co-injection marker gene rol-6?

Dopamine receptor knockout. [NOTE: (3/3/2025) ok295 was previously described as an allele of dop-3/T14E8.4, but is actually an allele of aaim-1/T14E8.4.1 according to current gene models.] Derived by out-crossing parental strain RB563. Outer Left Sequence: ttgctccagcggttctagtt. Outer Right Sequence: gactgtctaagcgaccagcc. Inner Left Sequence: ttgtttgcgggtttgataca. Inner Right Sequence: agaagcacgcggtagttgat. Inner Primer PCR Length: 3254. Estimated Deletion Size: about 1000 bp.

Heterozygotes are Unc and segregate Uncs, dead eggs, and non-Uncs (dsb-1 homozygotes), which produce 99% inviable embryos due to meiotic nondisjunction. Pick Unc to maintain and check for correct segregation of progeny. we11 is a TCA to TAA nonsense mutation in the dsb-1 coding sequence that introduces a premature stop after leucine 96. Reference: Stamper EL, et al. PLoS Genet. 2013;9(8):e1003679.

ieEx21 [smu-2p::AID*::smu-2::GFP::smu-2 3'UTR + rol-6(su1006)]. Rollers. Pick Rollers to maintain array. Rollers carry a transgene expressing AID*- and GFP- tagged SMU-2 in both the soma and the germ line. This strain can be combined with different TIR1 strains to test auxin-inducible degradation (AID) of nuclear protein in various tissues. Reference: Zhang L, et al. Development. 2015 Nov 9. pii: dev.129635.

ieSi58 [eft-3p::AID*::GFP::unc-54 3'UTR + Cbr-unc-119(+)] IV. Single copy transgene inserted into chromosome IV (oxTi177) expressing AID*::GFP in the soma. This strain can be combined with different TIR1 strains to test auxin-inducible degradation (AID) of protein in somatic tissue. Reference: Zhang L, et al. Development. 2015 Nov 9. pii: dev.129635.

ieSi59 [eft-3p::AID*::GFP::unc-54 3'UTR + Cbr-unc-119(+)] III. Single copy transgene inserted into chromosome III (oxTi444) expressing AID*::GFP at low levels in the soma. This strain can be combined with different TIR1 strains to test auxin-inducible degradation (AID) of protein in somatic tissue. Reference: Zhang L, et al. Development. 2015 Nov 9. pii: dev.129635.

An AID*::GFP tag was inserted at the 3' end of the endogenous dhc-1 coding sequence via CRISPR/Cas9. This strain can be combined with different TIR1 strains to examine spatial and temporal requirements for dynein, and to serve as a control strain for auxin-inducible degradation (AID). Reference: Zhang L, et al. Development. 2015 Nov 9. pii: dev.129635.

ieSi57 [eft-3p::TIR1::mRuby::unc-54 3'UTR + Cbr-unc-119(+)] II. Single copy transgene inserted into chromosome II (oxTi179) expressing modified Arabidopsis thaliana TIR1 tagged with mRuby in the soma. An AID*::GFP tag was inserted at the 3' end of the endogenous dhc-1 coding sequence via CRISPR/Cas9. This strain can be used to examine spatial and temporal requirements for dynein in somatic tissue, and to serve as a control strain for auxin-inducible degradation (AID). Reference: Zhang L, et al. Development. 2015 Nov 9. pii: dev.129635.

ieSi60 [myo-2p::TIR1::mRuby::unc-54 3'UTR + Cbr-unc-119(+)] II. Single copy transgene inserted into chromosome II (oxTi179) expressing modified Arabidopsis thaliana TIR1 tagged with mRuby in pharyngeal muscle. An AID*::GFP tag was inserted at the 3' end of the endogenous dhc-1 coding sequence via CRISPR/Cas9. This strain can be used to examine spatial and temporal requirements for dynein in pharyngeal muscle, and to serve as a control strain for auxin-inducible degradation (AID). Reference: Zhang L, et al. Development. 2015 Nov 9. pii: dev.129635.

ieSi61 [ges-1p::TIR1::mRuby::unc-54 3'UTR + Cbr-unc-119(+)] II. An AID*::GFP tag was inserted at the 3' end of the endogenous dhc-1 coding sequence via CRISPR/Cas9. Single copy transgene inserted into chromosome II (oxTi179) expressing modified Arabidopsis thaliana TIR1 tagged with mRuby in the intestine. This strain can be used to examine spatial and temporal requirements for dynein in the intestine, and to serve as a control strain for auxin-inducible degradation (AID). Reference: Zhang L, et al. Development. 2015 Nov 9. pii: dev.129635.

ieSi38 [sun-1p::TIR1::mRuby::sun-1 3'UTR + Cbr-unc-119(+)] IV. Single copy transgene inserted into chromosome IV (cxTi10882) expressing modified Arabidopsis thaliana TIR1 tagged with mRuby in germ line and early embryos. An AID*::GFP tag was inserted at the 3' end of the endogenous dhc-1 coding sequence via CRISPR/Cas9. This strain can be used to examine spatial and temporal requirements for dynein in the germ line and early embryos, and to serve as a control strain for auxin-inducible degradation (AID). Reference: Zhang L, et al. Development. 2015 Nov 9. pii: dev.129635.