Search Strains

umnIs80 [myo-2p::mKate2 + NeoR, I: 6284001] I. Pick wild-type mKate2+ to maintain. Heterozygotes are wild-type mKate2+, and segregate wild-type mKate2+, DpyUnc, arrested hT1 homozygotes (mKate2+), and dead eggs. Maintain by picking wild-type mKate2+. Derived by insertion of myo-2p::mKate transgene into hT1 balancer in parental strain KR1037 using CRISPR/Cas9.

umnIs18 [myo-2p::GFP + NeoR, V: 1005689 (intergenic)] I. Heterozygotes are wild-type GFP+, and segregate wild-type GFP+, Dpy Unc, arrested hT1 homozygotes(GFP+), and dead eggs. Maintain by picking wild-type GFP+. Derived by insertion of myo-2p::GFP transgene into hT1 balancer in parental strain KR1037 using CRISPR/Cas9.

umnIs22 [myo-2p::GFP + NeoR, V: 1005689 (intergenic)] IV. Heterozygotes are wild-type GFP+, and segregate wild-type GFP+, DpyUnc, Vul GFP+ (nT1) and dead eggs. Maintain by picking wild-type GFP+. Derived by insertion of myo-2p::GFP transgene into nT1 balancer in parental strain MT1000 using CRISPR/Cas9.

umnIs28 [myo-2p::GFP + NeoR, IV: 12457861 (intergenic)] V. Heterozygotes are wild-type GFP+, and segregate wild-type GFP+, DpyUnc, Vul GFP+ (nT1) and dead eggs. Maintain by picking wild-type GFP+. Derived by insertion of myo-2p::GFP transgene into nT1 balancer in parental strain MT1000 using CRISPR/Cas9.

umnIs49 [myo-2p::mKate2 + NeoR, V: 1005689 (intergenic)] IV. Heterozygotes are wild-type mKate2+, and segregate wild-type mKate2+, DpyUnc, Vul mKate2+ (nT1) and dead eggs. Maintain by picking wild-type mKate2+. Derived by insertion of myo-2p::mKate2 transgene into nT1 balancer in parental strain MT1000 using CRISPR/Cas9.

umnIs57 [myo-2p::mKate2 + NeoR, IV: 12457861 (intergenic)] V. Heterozygotes are wild-type mKate2+, and segregate wild-type mKate2+, DpyUnc, Vul mKate2+ (nT1) and dead eggs. Maintain by picking wild-type mKate2+. Derived by insertion of myo-2p::mKate2 transgene into nT1 balancer in parental strain MT1000 using CRISPR/Cas9.

umnIs58 [myo-2p::mKate2 + NeoR, V: 1005689 (intergenic)] V. Pick wild-type mKate2+ to maintain. Heterozygotes are wild-type mKate2+, and segregate wild-type mKate2+, DpyUnc, arrested hT1 homozygotes (mKate2+), and dead eggs. Maintain by picking wild-type mKate2+. Derived by insertion of myo-2p::mKate2 transgene into hT1 balancer in parental strain KR1037 using CRISPR/Cas9.

knu1284 is a CRISPR-engineered in-frame deletion of the TZF domain of oma-1. AID* degron tag (IAA17) inserted into the endogenous oma-2 locus. When OMA-2 is present, this mutant does not appear to have obvious phenotypes. Auxin-inducible depletion of OMA-2 causes a null phenotype: animals do not produce mature embryos and have an empty uterus. Reference: Ertekin A, et al. bioRxiv. 2025 May 12:2025.05.09.653132. doi: 10.1101/2025.05.09.653132. PMiD: 40463014.

siss-1(csn20) animals are defective in stress-induced sleep (SIS) with no other obvious defects in development or behavior. csn20 is a Cys-to-Tyr substitution in the third Cys residue of the EGF motif of SISS-1 (a.k.a. IGEG-1). csn20 phenocopies the deletion allele ve532, indicating that the EGF domain of SISS-1 is functional. Reference: Hill AJ, et al. Nat Commun 15, 10886. doi: 10.1038/s41467-024-55252-4. PMID: 39738055.

Unc. Egl, Lon, Slow and Floppy.

Unc. Semidominant Egl-c, Sma.

Unc. Semi-dominant Eat (TB relaxation defective).

tnEx212 [pod-2(+) + sur-5::GFP]. Pick GFP+ animals to maintain. sur-5::gfp(+) animals are wild type and segregate GFP(+) wild-type animals and GFP(-) pod-2(tn1691) dead embryos. tn1691 deletes ~15 kb within pod-2, including most of Exon 2 through to and including the stop codon (but not the polyA site). Reference: Starich TA, et al. eLife 2020;9:e58619 DOI: 10.7554/eLife.58619 PMID: 32735213

Homozygous viable, gfp expression in intestine, hypodermis, somatic gonad, excretory duct, CAN neuron. Reference: Starich et al. eLife 2020;9:e58619. DOI: https://doi.org/10.7554/eLife.58619

Homozygous lethal deletion balanced by bli-4- and GFP-marked translocation. Heterozygotes are wild-type with pharyngeal GFP signal, and segregate wild-type GFP heterozygotes, arrested hT2 aneuploids, and non-GFP tn1762 homozygotes (dead embryos and L1 larvae). Homozygous hT2[bli-4 let-? qIs48] inviable. Pick wild-type GFP and check for correct segregation of progeny to maintain. tn1762 is a ~9.2 kb deletion within fasn-1, including Exon 2 thru to 57 nt preceding stop codon. Reference: Starich TA, et al. eLife 2020;9:e58619 DOI: 10.7554/eLife.58619 PMID: 32735213

Temperature sensitive emb-30 allele. Maintain at 15C. Small. Unc. Cell death abnormal.

Heterozygotes are SmaCed and segregate SmaCed, SmaCedUnc and dead eggs. Maintain by picking SmaCed. tnDf2 is not transmitted well by males (i.e. tnDf2/+ males have a low mating efficiency).

Heterozygotes are Ced and segregate Ced, dead eggs and SmaCedUncs. Maintain by picking Ced. tnDf2 is not transmitted well by males (i.e. tnDf2/+ males have a low mating efficiency).

raEx223 [T05G5.1p::Y54E5A.5(cDNA)::GFP + pha-1(+) + rol-6]. Temperature-sensitive pha-1 mutant rescued by extrachromosomal array carrying pha-1(+), dominant rol-6, and cDNA::GFP fusion driven by muscle promoter (T05G5.1). Grow at 25 degrees to maintain. At 15 degrees maintain by picking Rol-6 animals. WBPaper00038444.

Temperature sensitive dauer constitutive. Unc. Semi-paralyzed. Closely linked.

Dauer defective. Unc-coiler.

Dauer defective. Unc-coiler.

Heterozygotes are WT and segregate WT, Roller Uncs, and a few Dpy mT1 homozygotes. mT1 is an apparent II;III translocation: small broods, lots of dead eggs, and exhibits pseudolinkage between rol-1 II and unc-71 III. The Roller phenotype of rol-1 expresses late and cannot be scored before adulthood. Pick non-Unc hermaphrodites and check for correct segregation of progeny.

Dpy. Unc.

Dpy. Unc.

Hypercontracted and amanitin resistant.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc, and DpyLet.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLet. The DpyLets are sterile adults. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLets. Lethal mid-larval. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLet. The DpyLets are adult steriles. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLet. The DpyLet are adult steriles. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc, and DpyLets. Lethal early larval. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLet. Lethal early larval. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLets. The DpyLets are adult steriles. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLets. The DpyLets are adult steriles. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpys, Uncs and Lets. Lethal mid-larval. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLet. Lethal early larval. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLet. Lethal early larval. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc and DpyLet. The DpyLet are adults which lay eggs that do not hatch. Maintain by picking semi-Dpy.

Heterozygotes are semi-Dpy and segregate semi-Dpy, Unc, and DpyLets. DpyLets are adult steriles. Maintain by picking semi-Dpy.

Aldicarb resistant. This allele is a small exonic deletion that frameshifts exon 21, thus deleting the MUN domain of both long and short isoforms of unc-13. The reference allele e51 is R471-stop, affecting only UNC-13L. Derived by 2x outcross of BC168. Reference: Rose AM & Baillie DL. Genetics. 1980 Nov;96(3):639-48.

Paralyzed Unc. Throws males. hlh-2(bx115) has no phenotype in this background.

Temperature-sensitive embryonic lethal. Maintain at 15C. Shift to 25-26C for 2-6 hours to induce meiotic spindle phenotype. Reference: Connolly AA, et al. J Cell Biol. 2015 Sep 14;210(6):917-32. PMID: 26370499

Temperature sensitive. Grow at permissive temperature of 15C. Fully penetrant cytokinesis defect at the restrictive temperature of 25C. Semi-dominant Unc.

Heterozygotes are WT and segregate WT, Uncs which give only dead eggs, and dead eggs.

C-terminus of endogenous mig-17 locus tagged with mNeonGreen using CRISPR/Cas9. Reference: Fan J, et al. Elife. 2020 Apr 7;9:e55890. PMID: 32255430

Very small. Small brood size (about 1/10 that of WT). Grows very slowly. Reference: Watanabe, N et al. Genes to Cells 2007. 12(5):603-609.

Heterozygotes are Dpy. Segregate Dpy Unc. tm939 homozygotes are emb, leth, pvl, rup, larval arrested or sterile. Attribution: This strain was generated by the National Bioresource Project at the Tokyo Women's Medical University School of Medicine, which is part of the International C. elegans Gene Knockout Consortium, which should be acknowledged in any publications resulting from its use. Paper_evidence WBPaper00041807

Egl. Unc. Do not distribute this strain; other labs should request it from the CGC.

Heterozygotes are WT and segregate WT, DpyUncs and Steriles which have an everted vulva. Do not distribute this strain; other labs should request it from the CGC.