Search Strains

Temperature-sensitive sterile; maintain at 15-20C. uae2 is a CRISPR-engineered deletion of the mip-2 coding region. Reference: Cipriani PG. et al. Elife. 2021 Jul 5;10:e60833. doi: 10.7554/eLife.60833.

unc-70(cas983) removes nine amino acids (H590-L598) in the SCA5-associated deletion in ?-spectrin by Cas9-triggered homologous recombination. Reference: Jia R, et al. (2019). Spectrin-based Membrane Skeleton Supports Ciliogenesis. PLoS Biology.

unc-70(cas1050) removes nine amino acids (H590-L598) in the SCA5-associated deletion in ?-spectrin and inserts GFP at N-terminus of the endogenous unc-70 locus. Reference: Jia R, et al. (2019). Spectrin-based Membrane Skeleton Supports Ciliogenesis. PLoS Biology.

mgDf47 completely suppresses daf-c phenotype of daf-2. mgDf47 deletes approximately 8kb of the daf-16 gene beginning after exon 4.

Slow pumping. Egg laying defective. Low frequency of dauer formation. Residual serotonin immunoreactivity, rare and very faint (<1% of NSMs) in most stages, but nearly 100% of CP neurons in adult males show faint to moderate serotonin immunoreactivity. Males mate quite well (E. Hare and C. Loer). Some phenotypic defects originally attributed to mg280 in this strain are likely due to vs166. vs166 is a large deletion (approx. 9.8kb) in the cam-1 gene; flanking sequences are: 5'-gctactggtaaataaggtaa-3' and 5'-atgcttttaaagtttatatt-3' (Edith Myers, personal commnication). See MT15434 for a strain carrying mg280 without the cam-1 mutation.

CRISPR/Cas9 used to engineer a 6bp in-frame deletion in 5' coding region removing 2 amino acid residues that are conserved from yeast to human that might be critical for U1A binding to U1 snRNA Reference: Newman MA, et al. Genes Dev. 2018 May 1;32(9-10):670-681. PMID: 29739806

aSi13 [lox2272 + loxN 3' (delta)Cbr-unc-119(+) + 3' (delta)mNeonGreen::PEST] aSi14[lox2272 + loxP 3’ (delta)HygR + 3’ (delta)mScarlet-I::PEST]?II. Unc. Strain contains a set of dual specialized safe harbor transgene landing pads for integration of promoters: one driving mScarlet and rescuing hygromycin resistance upon integration, the other driving mNeonGreen and rescuing the unc phenotype upon integration. Reference: Stevenson ZC, et al. bioRxiv 2022.10.30.514301; doi: https://doi.org/10.1101/2022.10.30.514301. Paper accepted at eLife.

pkIs1582 [let-858::GFP + rol-6(su1006)] V. Homozygous lethal lsm-8 deletion balanced by GFP-marked nT1 translocation. xe17 generated by CRISPR/Cas9-engineered replacement of the gene with a red pharyngeal marker. lsm-8 heterozygotes are wild-type (will roll in this case because of pkIs1582) green & red pharynx, and will segregate rolling heterozygotes (green & red pharynx), arrested nT1[qIs51] aneuploids (only green pharynx), and lsm-8 homozygotes (only red pharynx). Homozygous nT1[qIs51] inviable. Pick rollers with green & red pharynx and check for correct segregation of progeny to maintain. Reference: Mattout A, et al. Nat Cell Biol. 2020 May;22(5):579-590. PMID: 32251399

Superficially wild-type. Endogenously tagged met-2 locus, with MET-2::mCherry signal detectable in all germline and somatic tissues. Reference: Delaney CE, et al. J Cell Biol. 2019 Mar 4;218(3):820-838. PMID: 30737265

bqsi433 [hsp16.41p::FRT::mCherry::his-58::FRT::dam::emr-1 + unc-119(+)] II. bqSi495 [myo-3p::FLP::D5 + unc-119(+)] IV. ygIs1 [baf-1p::GFP::lamin(wt) + unc-119(+)]. Strain used to perform muscle specific EMR-DamID, to map lamina-associated domains (LADs). Strain also has low level over-expression of GFP::LMN-1. Strain also has cec-4 deletion. Might still carry unc-119(ed3) or (ed9) in background. Reference: Harr JC, et al. Genes Dev. 2020 Apr 1;34(7-8):560-579. PMID: 32139421

bqSi447 [hsp16.41p::FRT::mCherry::his-58::FRT::GFP::dam + unc-119(+)] II. bqSi495 [myo-3p::FLP::D5 + unc-119(+)] IV. ygIs1 [baf-1p::GFP::lamin(wt) + unc-119(+)]. Strain expressing muscle specific DAM::GFP, used as a control for muscle specific EMR-DamID. Strain also has low level over-expression of GFP::LMN-1. Strain also has cec-4 deletion. Might still carry unc-119(ed3) or (ed9) in background. Reference: Harr JC, et al. Genes Dev. 2020 Apr 1;34(7-8):560-579. PMID: 32139421

gwSi34 [lem-2p::lem-2::GFP-3xFlag::lem-2 3'UTR] II. Superficially wild-type. Endogenously tagged met-2 locus. LEM-2::GFP is detectable at the nuclear periphery, and MET-2::mCherry signal detectable throughout nucleoplasm of all germline and somatic tissues. Reference: Delaney CE, et al. J Cell Biol. 2019 Mar 4;218(3):820-838. PMID: 30737265

CRISPR-engineered whole-gene deletion of lin-65. Worms are slow growing with reduced brood size and become sterile at elevated temperatures. Reference: Delaney CE, et al. J Cell Biol. 2019 Mar 4;218(3):820-838. PMID: 30737265

Superficially wild-type. Endogenously tagged lin-65 locus, with LIN-65::GFP signal detectable in all germline and somatic tissues. Reference: Delaney CE, et al. J Cell Biol. 2019 Mar 4;218(3):820-838. PMID: 30737265

Superficially wild-type. Endogenously tagged met-2 and lin-65 loci. MET-2::mCherry and LIN-65::GFP signal are detectable in all germline and somatic tissues. Reference: Delaney CE, et al. J Cell Biol. 2019 Mar 4;218(3):820-838. PMID: 30737265

Superficially wild-type. Endogenously tagged met-2 and arle-14 loci. MET-2::mCherry and GFP::ARLE-14 signal are detectable in all germline and somatic tissues. Reference: Delaney CE, et al. J Cell Biol. 2019 Mar 4;218(3):820-838. PMID: 30737265

1063 bp deletion in gene from nucleotide 489 (intron 1) to 1552 (exon 3). Phenotype: slow growth.

Isolated from a deletion library.

nuIs175 [myo-2p::RFP + unc-129p::RFP::snb-1] X. smn-1 heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP rt248 homozygotes (larval arrest). Homozygous hT2 [bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. NOTE: myo-2p::RFP is not visible in this strain. rt248 is a 8 bp deletion in smn-1. [rt248: TTTTGATTAGC--------ATCCCAAAC] [wild-type: TTTTGATTAGCTCCGTATCATCCCAAAC] Reference: Dimitriadi M, et al. Proc Natl Acad Sci U S A. 2016 Jul 26;113(30):E4377-86. O'Hern PJ, et al. Elife. 2017 May 2;6. pii: e20752.

Superficially wild-type. This is the appropriate control strain for FUS disease models HA2846 and HA2847. This control strain contains presumably silent edits inserted by CRISPR editing while creating the FUS disease models in HA2846 and HA2847, and was back-crossed to remove the pha-1 allele used in strain construction. Reference: Baskoylu S, et al. bioRxiv 799932; doi: https://doi.org/10.1101/799932

Null allele. CRISPR-engineered deletion of the tdp-1 locus precisely eliminates all known tdp-1 exons and introns. Reference: Lins J, et al. Generation of a C. elegans tdp-1 null allele and humanized TARDBP containing human disease-variants. MicroPubl Biol. 2023 Jun 6;2023:10.17912/micropub.biology.000693. doi: 10.17912/micropub.biology.000693. PMID: 37351305.

Deletion allele generated by the Mitani Lab.

Complete CRISPR/Cas-9 knock-out (2317bp deletion) of the gene nlp-42(Y80D3A.10). Two times backcrossed with N2. Homozygous. Superficial wild-type. Primers for crossing: Fwd: cgagacttttaaccccgtcg InFwd: aaagcccatgacttgctgaa Rev: gctcaggtggttagagggtt Wild-type bands: 580bp, 2652bp. Mutation band: 335bp.

syb762 is a 1076 bp deletion in nlp-8. Flanking sequences: taaaacccggaacc - acttcttgaacaactg Forward primer: TAAAAGCGGAGTAGCGTCCA Reverse primer: CAGATGGTCGGGTGATTTGA syb762 was generated in a mutant background and out-crossed to N2 to remove those background mutations. Reference: Sinner MP, et al. Curr Biol. 2021 Feb 8;31(3):564-577.e12. PMID: 33259791

goe3 is a 25 bp deletion in the second exon causing a frame shift and presumptive molecular null allele. sgRNA target sequence: GTTATGGTGAGAAGGAAAGCtgg Reference: Turek et al. eLife 2016;5:e12499.

goe5 is a 4 bp deletion in the second exon causing a frame shift and presumptive molecular null allele. sgRNA target sequence: GTTATGGTGAGAAGGAAAGCtgg Reference: Turek et al. eLife 2016;5:e12499.

Sid. Deletion allele. Reference: Whangbo JS, et al. G3 (Bethesda). 2017 Oct 12 [Epub ahead of print]. pii: g3.300308.2017. doi: 10.1534/g3.117.300308. PMID: 29025917.

Superficially wild-type except for a slightly shorter body length in adults. Crispr/Cas9 was used to create a 13 bp deletion in exon7 of ccar-1a; breakpoints: CTGATTCGGGAG/sda11/ATCGGAAGTTTC. sda11 is an isoform-specific deletion allele. It only affects the function of CCAR-1A and CCAR-1D, but not CCAR-1B and C. In addition, because CCAR-1D is not expressed in embryos,this allele can be used to specifically inactivate CCAR-1A (the full-length isoform that is the most similar to human CCAR1) during embryogenesis. Reference: Fu R, et al. J Cell Sci. 2018 May 10.

5-bp deletion. Superficially wild-type. Reference: https://www.micropublication.org/journals/biology/micropub-biology-000169/

2-bp deletion. Superficially wild-type. Reference: https://www.micropublication.org/journals/biology/micropub-biology-000169/

49-bp deletion. Superficially wild-type. Reference: https://www.micropublication.org/journals/biology/micropub-biology-000169/

1.6 kb deletion in msi-1. Males have poor mating efficiency.

1.6 kb deletion in msi-1. Males have poor mating efficiency.

Homozygous lethal deletion chromosome 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 tm514 homozygotes (probable embryonic or early larval arrest). Homozygous hT2[bli-4 let-? qIs48] inviable. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype. Pick WT GFP and check for correct segregation of progeny to maintain.

Pick GFP+ Egl to maintain. Segregates GFP- lin-41(xe8) homozygotes (die by vulval bursting as young adults), lin-41(xe8)/lin-41(bch28[eft-3p::gfp::h2b::tbb-2 3'UTR] xe70) heterozygotes (GFP+ Egl), and lin-41(bch28[eft-3p::gfp::h2b::tbb-2 3'UTR] xe70) (GFP+ Ste Dpy). lin-41(xe8) is a deletion of let-7 binding sites in the lin-41 3'UTR. The balancer was derived from lin-41(bch28), a lin-41(0) allele in which an expression cassette that drives ubiquitous nuclear GFP from the eft-3 promoter has been inserted into the lin-41 coding sequence (Katic et al., G3 (2015) 5:1649-56). References: Katic et al., G3 (2015) 5:1649-56 for lin-41(bch28) starting allele for balancer generation. Aeschimann F, et al. (2019). A single let-7 target to coordinate transition to adulthood. Life Science Alliance 2, e201900335. for balanced line. Do not distribute this strain; other labs should request it directly 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.

T14G8.1 Deletion of 2018 bp of T14G8.1 [nucleotide 3699 (in exon 4) joined to 1682 (in exon 6)]. No phenotype observed.

WT behavioral phenotype. Axon guidance defect in ceh-17 expressing neurons ALA and 4SIA. ceh-17 = D1007.1, a C. elegans paired homeodomain transcription factor, Phox2 orthologue. np1 is a molecular null. np1 is a 1353 bp deletion inculding 549 bp upstream of the initiator ATG and extending to the 5th codon of the homeodomain. [NOTE: Miyazaki, et al. (2022) report that this strain carries the fln-2(ot611) mutation in the background, and outcrossing the strain resulted in significantly reduced quiescence during lethargus.]

Temperature sensitive. Sterile at 25C. Larval lethal with lin-35 and hlp-2. The deletion extends 673 bp (and not 674 + 1 insertion as described on the S. Mitani website). The deletion breakpoint is AAAAAAAGAGCTGAAACATCGGAAGAGTCA/AGATGCAGAGAGAGCAGAGAAAGAGAGA AGA. B0041.7 Reference: Cardoso C, et al. Dev Biol. 2005 Feb 1;278(1):49-59.

No phenotype. Contains a 2063 bp deletion in the smf-1 locus (K11G12.4) from position 17016 to position 19079 on the K11G12 cosmid. eh5 was obtained from the Sanger Centre Knockout Service in strain HX104. Reference: Au C, et al. PLoS One. 2009 Nov 18;4(11):e7792.

nj53 is a SAX-7 long-form-specific deletion mutant. nj53 shos the normal neuronal position phenotype.

RNAi-capable OP50 strain. Tetracycline & Chloramphenicol resistant. Uracil auxotroph. E. coli B. Biosafety Level: BSL-1. Standard OP50 (CGC) was rendered RNAi competent through two modifications by phage transduction. The OP50 RNase III (rnc) allele was replaced with the deletion allele (rnc14::?Tn10) found in HT115(DE3), and a genomically encoded IPTG-inducible T7 RNA polymerase (lacz?A::T7pol camFRT) was introduced. Reference: Neve IAA, et al. G3 (Bethesda). 2019 Nov 11. pii: g3.400741.2019.

Delayed hatching from egg shell. QL and descendant cells migrate forward instead of backward (incomplete penetrance). Tc1 insertion mutant.

Homozygous viable. Deletion of 2572 bp in parental strain N2. Left flanking sequence: atctatttttttaaggccgaac; Right flanking sequence: tattggcagcaagcgttgcgaa. sgRNA #1: ccatacgttgttgtggagtt; sgRNA #2: tgtgaagcggaaaaccctat.

Homozygous viable. Deletion of 1579 bp in parental strain N2. Left flanking sequence: gcaaaaaaaaacataccaga; Right flanking sequence: cgtggtttcaggccattacg. sgRNA #1: cctcactgatgatcgtcatc; sgRNA #2: aaaggttcagcattcacacg.

Homozygous viable. Deletion of 2532 bp in parental strain N2. Left flanking sequence: agtcaattcggaactccatgt; Right flanking sequence: tctacggtttaaacaactcctc. sgRNA #1: aacgggatctgttcatcaca; sgRNA #2: agtgtgaaacgcaacgtcta.

Homozygous viable. Deletion of 796 bp in parental strain N2, with insertion of 13 nucleotides(tcaacaaaatgcc) at break. Left flanking sequence: taatatcctccggaccgata; Right flanking sequence: gtcctgactgataatcatcaac. sgRNA #1: tgtgtagtataaacgattat; sgRNA #2: cgggtcacgagtagagatgg.

Homozygous viable. Deletion of 973 bp in parental strain N2. Left flanking sequence: aaactacggtaacacccatt; Right flanking sequence: tgacggatgcaatgacaaga. sgRNA #1: gagacctacacatgccaaat; sgRNA #2: tttggattaatgttacctga.

Homozygous viable. Deletion of 247 bp in parental strain N2.Deletion appears to have occurred at the sgRNA #2 cut site. Left flanking sequence: tttataggaatttcaggaat; Right flanking sequence: ttccgtcaccttccgtcaaa. sgRNA #1: aaatgataagaagccaaagc; sgRNA #2: tttgtgtttatgacgagctc.

Homozygous sterile. Balanced by nT1[qIs51]. Deletion of 3471 bp in parental strain N2. Left flanking sequence: tgatcactcacagttccctgg; Right flanking sequence: gaatggatatgatgatgtatat. sgRNA #1: atgttcgtggaacgacacca; sgRNA #2: aggataaactctctcttgaa.

Homozygous viable. Deletion of 1581 bp in parental strain N2. Also contains a SNP (A->T) in right flanking sequence (uppercase text). Left flanking sequence: ctactcatgatataccttct; Right flanking sequence: ccggTgctctcttgttgtct. sgRNA #1: gttttcacatgggcaagaga; sgRNA #2: atttcaattccatttcccac.