Search Strains

Homozygous lethal deletion chromosome balanced by GFP-marked translocation. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested nT1[qIs51] aneuploids, and non-GFP q426 homozygotes (variable phenotypes including sterile, L1 lethal, and small sterile adults with rectal protrusion and occasional bent pharynx). Homozygous nT1[qIs51] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Kadyk LC & Kimble J. Development. 1998 May;125(10):1803-13. doi: 10.1242/dev.125.10.1803. PMID: 9550713.

qSi49 [sygl-1p::3xFLAG::sygl-1::sygl-1 3’UTR + unc-119(+)]. Superficially wild-type. Unknown whether or not unc-119(ed3) is still present in the background. Reference: Shin H, et al. PLoS Genet. 2017 Dec 12;13(12):e1007121.

qSi44 [glp-1::6xMyc6xHis + Cbr-unc-119(+)] II. Homozygous viable. Variable body length. May still carry unc-119(ed3) in the background. Reference: Sorensen EB, et al. A toolkit of tagged glp-1 alleles reveals strong glp-1 expression in the germline, embryo, and spermatheca. microPublication Biology, 2020(06). http://doi.org/10.17912/micropub.biology.000271

qSi26 [sygl-1p::H2B::GFP::sygl-1 3' end + unc-119(+)]. GFP expression in distal germ cell nuclei. teIs1 [oma-1::GFP + unc-119(+)]. oma-1::GFP expression in oocyte cytoplasm. teIs1 rescues GFP expression in silenced germline trangenes more effectively at 25C. Reference: Kerschner AM, et al. Proc Natl Acad Sci U S A. 2014 Mar 11;111(10):3739-44.

qSi140 [3xMyc::fog-1 + unc-119(+)] inserted into cxTi10816 on LG IV. Can be maintained at 20C. qSi140 rescues fog-1 null phenotype. References: Noble DC, et al. Genetics. 2016 Jan;202(1):221-34.

qSi41 [fog-3::3xFLAG + unc-119(+)] inserted into ttTi5605 on LG II. qSi140 [3xMyc::fog-1 + unc-119(+)] inserted into cxTi10816 on LG IV. Can be maintained at 20C. qSi41 rescues fog-3 null phenotype. qSi140 rescues fog-1 null phenotype. References: Noble DC, et al. Genetics. 2016 Jan;202(1):221-34.

qSi156 [glp-1::Halotag + Cbr-unc-119(+)] IV. Mos insertion of Halo tagged GLP-1 in glp-1(null) background. qSi156 mostly rescues glp-1(q46) sterility; partially penetrant embryonic lethality, early larval lethality and dumpiness. Reference: Sorensen EB, et al. A toolkit of tagged glp-1 alleles reveals strong glp-1 expression in the germline, embryo, and spermatheca. microPublication Biology, 2020(06). http://doi.org/10.17912/micropub.biology.000271

Maintain at 15C. Heterozygotes are WT, GFP+ in the pharynx and segregate WT (GFP+ in the pharynx), dead eggs (hT2 homozygotes) and non-GFP tra-1(q183) homozygous females. Raise strain at 15C; at 20C many heterozygotes are also feminized. tra-1(q183) is temperature-sensitive for its XX, but not its XO mutant phenotype. At 25C, both q183/q183 and q183/+ are female. At 15C, q183/q183 is still always female, but q183/+ can be hermaphroditic. Maintain by picking fertile GFP worms and checking for correct segregation, since the hT2 balancer is lost at low frequencies.

Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP, arrested hT2 aneuploids, and non-GFP q869 homozygotes (viable and somewhat fertile). Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. q869 is a deletion of the entire lst-1 coding sequence as well as 139 bp upstream of M71 start codon and 228 bp downstream of the coding sequence. Reference: Haupt KA, et al. Development. 2019 Oct 17;146(20):dev181644. doi: 10.1242/dev.181644. PMID: 31515205

qSi364 [3xFLAG::fbf-2(R7/R8 loop deletion) + unc-119(+)] IV. Single-copy MosSCI insertion into oxTi177 IV. R7/R8 loop deletion removes a critical protein-to-protein interface. qSi364 is phenotypically wild-type on its own, but Mog when crossed into fbf-1(ok91) fbf-2(q704) background. Reference: Carrick BH, et al. Dev Cell. 2024 Mar 11;59(5):661-675.e7. doi: 10.1016/j.devcel.2024.01.005. PMID: 38290520.

qSi369 [sygl-1p::24xMS2 loops::3xflag::sygl-1::sygl1 3'UTR]. qSi370 [mex-5p:: MS2 Coat Protein::linker::sfGFP::tbb-2 3' UTR::gpd-2 intergenic sequence::H2B::mCherry::unc-54 3' UTR]. Superficially wild-type with expression of sfGFP and nuclear mCherry in germline. qSi369 and qSi370 constitute an MS2 system which allows live visualization of sygl-1 nascent transcripts in the C. elegans germline in a glp-1 mutant background. qSi370 can be prone to silencing, especially after severe starvation; silencing of GFP or mCherry expression can occur independently of one another. Maintain by picking animals with bright GFP and mCherry expression. Reference: Lee C, et al. Dev Cell. 2019 Aug 19;50(4):426-435.e4.

Heterozygotes are wild-type and segregate wild-type heterozygotes, glp-1(q35) homozygotes (Muv steriles), eT1 homozygotes (Unc-36), and males. glp-1(q35) has a semi-dominant multi-vulva phenotype as well as the loss-of-function Glp phenotype (sterility and embryonic lethality). The q35 mutation is a nonsense mutation that eliminates 122 C-terminal amino acids including a PEST sequence. The C terminus was thought to contain a negative regulatory domain that inactivates glp-1 in the VPCs; the inappropriate glp-1(q35) activity can substitute for lin-12 vulval fate determination. References: Austin J & Kimble J. Cell. 1987 Nov 20;51(4):589-99. Mango S, et al. Nature. 1991 Aug 29;352(6338):811-5.

qSi369 [sygl-1p::24xMS2 loops::3xflag::sygl-1::sygl1 3'UTR]. qSi370 [mex-5p:: MS2 Coat Protein::linker::sfGFP::tbb-2 3' UTR::gpd-2 intergenic sequence::H2B::mCherry::unc-54 3' UTR]. Superfically wild-type with expression of sfGFP and nuclear mCherry in germline. qSi369 and qSi370 constitute an MS2 system which allows live visualization of sygl-1 nascent transcripts in the C. elegans germline in a glp-1 mutant background. Reference: Lee C, et al. Dev Cell. 2019 Aug 19;50(4):426-435.e4.

3xFLAG tag inserted at N-terminus of endogenous fbf-2 locus in fbf-1 null background (parental strain JK3022). Reference: Carrick BH, et al. Dev Cell. 2024 Mar 11;59(5):661-675.e7. doi: 10.1016/j.devcel.2024.01.005. PMID: 38290520.

q873[fog-3(1-262)::GGS::3xFLAG::fog-3(263 Phe)] I. qSi375 [mex-5p::eGFP::linker::his-58::3xboxb::tbb-2 3’UTR] II. The tethering assay allows this strain to be used for determining FOG-3 levels in different genetic backgrounds. Similar fertility to N2 wild type. Reference: Aoki S, et al. Cell Rep. 2018 Jun.26; 23(13):3769-3775

qSi369 [sygl-1p::24xMS2 loops::3xflag::sygl-1::sygl1 3'UTR]. qSi370 [mex-5p:: MS2 Coat Protein::linker::sfGFP::tbb-2 3' UTR::gpd-2 intergenic sequence::H2B::mCherry::unc-54 3' UTR]. Heterozygotes are wild-type with pharyngeal GFP signal, and segregate wild-type GFP+ heterozygotes, non-GFP pharynx q224 homozygotes (Glp sterile at 20-25C) and dead eggs (hT2 homozygotes). All animals are sfGFP + in the germline, with distal and proximal transcription sites in the nucleus. qSi369 and qSi370 constitute an MS2 system which allows live visualization of sygl-1 nascent transcripts in the C. elegans germline in a glp-1 mutant background. Reference: Lee C, et al. Dev Cell. 2019 Aug 19;50(4):426-435.e4.

q1011 is an engineered Y479A point mutation in the R7/R8 loop of 3xFLAG-tagged FBF-2. Derived by modification of parental strain JK5810 fbf-2(q945[3xFLAG::fbf-2]) II. Reference: Carrick BH, et al. Dev Cell. 2024 Mar 11;59(5):661-675.e7. doi: 10.1016/j.devcel.2024.01.005. PMID: 38290520.

q1023 is an engineered Y479A point mutation in the R7/R8 loop of 3xFLAG-tagged FBF-2. Derived by modification of parental strain JK5935 fbf-2(q945[3xFLAG::fbf-2]) II. Pick GFP+ t maintain. Homozygous sterile (Mog) mutation balanced by GFP- and dpy-10-marked inversion. Heterozygotes are WT with relatively dim pharyngeal GFP signal, and segregate WT dim GFP, Dpy bright GFP (mIn1 homozygotes), and non-GFP ok91 q1023 homozygotes (sterile Mog). Pick WT dim GFP and check for correct segregation of progeny to maintain. Reference: Carrick BH, et al. Dev Cell. 2024 Mar 11;59(5):661-675.e7. doi: 10.1016/j.devcel.2024.01.005. PMID: 38290520.

Endogenous mpk-1 locus tagged with a single V5 tag inserted into the mpk-1b-specific exon to specifically label the N-terminus of the MPK-1B protein, and two tandem OLLAS tags inserted into the C-terminus, labeling both MPK-1A and MPK-1B isoforms. Reference: Robinson-Thiewes et al. Cell Reports, In Press.

qIs56 [lag-2p::GFP + unc-119(+)]. q1201 is a 125 bp deletion causing a frameshift in mpk-1B without affected mpk-1A. Heterozygous animals Roll and have GFP+ distal tip cells. Segregates roller GFP(+) heterozygotes and non-roller GFP(-) mpk-1 homozygotes (sterile, but form a vulva). qC1 [dpy-19(e1259) glp-1(q339) qIs26] homozygotes are not viable. Endogenous mpk-1 locus tagged with a single V5 tag inserted into the mpk-1b-specific exon to specifically label the N-terminus of the MPK-1B protein, and two tandem OLLAS tags inserted into the C-terminus, labeling both MPK-1A and MPK-1B isoforms. Reference: Robinson-Thiewes et al. Cell Reports, In Press.

q1078 is an engineered insertion of LambdaN peptide near the C-terminus of 3xFLAG-tagged FBF-2. Derived by modification of parental strain JK5810 fbf-2(q945[3xFLAG::fbf-2]) II. Reference: Carrick BH, et al. Dev Cell. 2024 Mar 11;59(5):661-675.e7. doi: 10.1016/j.devcel.2024.01.005. PMID: 38290520.

q1080 is an engineered insertion of LambdaN peptide near the C-terminus of 3xFLAG-tagged FBF-2 with a Y479A point mutation in the R7/R8 loop. Derived by modification of parental strain JK5984 fbf-2(q1011[*q945]) II. Reference: Carrick BH, et al. Dev Cell. 2024 Mar 11;59(5):661-675.e7. doi: 10.1016/j.devcel.2024.01.005. PMID: 38290520.

Heterozygous animals Roll and have GFP(+) distal tip cells. Segregates roller GFP(+) heterozygotes and non-roller GFP(-) mpk-1 homozygotes which are sterile and vulvaless. qC1 [dpy-19(e1259) glp-1(q339) qIs26] homozygotes are not viable. q1190 is a deletion in mpk-1 that removes 2221bp between axons 2-7 (based on mpk-1b annotation). Sequence is shared between mpk-1a and mpk-1b. The deletion is in frame and leaves 27bp of coding sequence.Reference: Robinson-Thiewes S, et al. Cell Rep. 2021 May 25;35(8):109162. doi: 10.1016/j.celrep.2021.109162.

GSS linker and 3xV5 tag inserted at C-teminus of endogenous let-711 locus. Generated in N2 background. Reference: Carrick BH, et al. Dev Cell. 2024 Mar 11;59(5):661-675.e7. doi: 10.1016/j.devcel.2024.01.005. PMID: 38290520.

q1242 is an engineered TGT to ACA substitution in FBEa1 of the endogenous gld-1 locus with a downstream G to C substitution to facilitate screening by restriction digest. Reference: Carrick BH, et al. Dev Cell. 2024 Mar 11;59(5):661-675.e7. doi: 10.1016/j.devcel.2024.01.005. PMID: 38290520.

1xV5 tag inserted at N-teminus of endogenous daz-1 locus. Generated in N2 background. Reference: Carrick BH, et al. Dev Cell. 2024 Mar 11;59(5):661-675.e7. doi: 10.1016/j.devcel.2024.01.005. PMID: 38290520.

q1257 is an engineered TGT to ACA substitution in FBEb of the endogenous gld-1 locus. Reference: Carrick BH, et al. Dev Cell. 2024 Mar 11;59(5):661-675.e7. doi: 10.1016/j.devcel.2024.01.005. PMID: 38290520.

1xV5 tag inserted at N-teminus of endogenous ife-3 locus. Generated in N2 background. Reference: Carrick BH, et al. Dev Cell. 2024 Mar 11;59(5):661-675.e7. doi: 10.1016/j.devcel.2024.01.005. PMID: 38290520.

Engineered TGT to ACA substitutions in FBEa1 and FBEb of the endogenous gld-1 locus with a downstream G to C substitution to facilitate screening by restriction digest. Pick GFP+ to maintain. Heterozygotes are WT with pharyngeal GFP signal, and segregate WT GFP+, arrested hT2 aneuploids, and non-GFP q1271 homozygotes (sterile Mog). Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP+ and check for correct segregation of progeny to maintain. Derived by modification of gld-1(q1242) homozygotes from parental strain JK6540. Reference: Carrick BH, et al. Dev Cell. 2024 Mar 11;59(5):661-675.e7. doi: 10.1016/j.devcel.2024.01.005. PMID: 38290520.

qSi422 [*rajSi50 (gld-1p::GFP::H2B::gld-1 3'UTR [FBEa TGT to ACA] + Cbr-unc-119(+))] II. Maintain at 24C on OP50. Select well-fed adult animals with bright germline GFP in nuclei to propagate strain. Engineered TGT to ACA substitution in FBEa in rajSi50 gld-1 3’UTR reporter and substitution of downstream G to C to disrupt PAM site. GFP is visible in germline nuclei. Kimble lab crossed original NIK50 strain with TX189 [oma-1::GFP] and back out again to reduce GFP silencing. Primers to confirm FBEa mutation: slc314 GTCACCAAGTACACTTCCAGCAAG / prHJS401 TGGCAACATGATGTATCGCTGT (~100 bp band in mutant, no product in wild-type). Reference: Carrick BH, et al. Dev Cell. 2024. "PUF partner interactions at a conserved interface shape the RNA-binding landscape and cell fate in Caenorhabditis elegans."

qSi424 [*rajSi50 (gld-1p::GFP::H2B::gld-1 3'UTR [FBEb TGT to ACA] + Cbr-unc-119(+))] II. Maintain at 24C on OP50. Select well-fed adult animals with bright germline GFP in nuclei to propagate strain. Engineered TGT to ACA substitution in FBEb in rajSi50 gld-1 3’UTR reporter and GFP is visible in germline nuclei. Kimble lab crossed original NIK50 strain with TX189 [oma-1::GFP] and back out again to reduce GFP silencing. Primers to confirm FBEb mutation: slc314 GTCACCAAGTACACTTCCAGCAAG / slc302 GGGTTAGCGTTAAGATAACTGT (~500 bp band in FBEb mutant, no product in wild-type). Reference: Carrick BH, et al. Dev Cell. 2024. "PUF partner interactions at a conserved interface shape the RNA-binding landscape and cell fate in Caenorhabditis elegans."

qSi425 [*rajSi50 (gld-1p::GFP::H2B::gld-1 3'UTR [FBEa TGT to ACA] [FBEb TGT to ACA] + Cbr-unc-119(+))] II. Maintain at 24C on OP50. Select well-fed adult animals with bright germline GFP in nuclei to propagate strain. qSi425 contains engineered TGT to ACA substitution in FBEa in rajSi50 gld-1 3’UTR reporter and substitution of downstream G to C to disrupt PAM site, and TGT to ACA substitution in FBEb in rajSi50 gld-1 3’UTR reporter. GFP is visible in germline nuclei. Derived by targeted modification of FBEb in parental strain JK6690. Kimble lab crossed original NIK50 strain with TX189 [oma-1::GFP] and back out again to reduce GFP silencing. Primers to confirm FBEa mutation: slc314 GTCACCAAGTACACTTCCAGCAAG / prHJS401 TGGCAACATGATGTATCGCTGT (~100 bp band in FBEa mutant, no product in wild-type). Primers to confirm FBEb mutation: slc314 GTCACCAAGTACACTTCCAGCAAG / slc302 GGGTTAGCGTTAAGATAACTGT (~500 bp band in FBEb mutant, no product in wild-type). Reference: Carrick BH, et al. Dev Cell. 2024. "PUF partner interactions at a conserved interface shape the RNA-binding landscape and cell fate in Caenorhabditis elegans."

rajSi50 [gld-1p::GFP::H2B::gld-1 3'UTR + Cbr-unc-119(+)] II. Maintain at 24C on OP50. Select well-fed adult animals with bright germline GFP in nuclei to propagate strain. GFP is visible in germline nuclei, low in distal germ cells, increases proximally, strong in oocytes. Kimble lab crossed original NIK50 strain with TX189 [oma-1::GFP] and back out again to reduce GFP silencing. Primers to confirm FBEa: slc314 GTCACCAAGTACACTTCCAGCAAG / slc311 TGGCAACATGATGTATGGCACA (100 bp band in FBEa wt). FBEb: slc314 GTCACCAAGTACACTTCCAGCAAG / slc304 GGGTTAGCGTTAAGATAACACA (~500 bp band in FBEb wt). References: Theil K, et al. Nature Commun. 2019 Sep 16;10(1):4205. doi: 10.1038/s41467-019-12050-7. PMID: 31527589. Carrick BH, et al. Dev Cell. 2024. "PUF partner interactions at a conserved interface shape the RNA-binding landscape and cell fate in Caenorhabditis elegans."

Heterozygotes are WT and segregate WT, DpyUnc and males. The males will mate. Do not distribute this strain; other labs should request it from the CGC.

ZF1-degron, GFP, and 3xFlag tags inserted into endogenous zyg-9 locus. No overt phenotypes in a zif-1(gk117) background. Predicted no degradation because zif-1 putative null is present. Can be used for degradation of zyg-9 protein by providing a source of ZIF-1. GFP fluorescence is observed in microtubules. Reference: Magescas J, et al. eLife. 2019 Jun 27;8:e47867. doi: 10.7554/eLife.47867. PMID: 31246171.

ZF1-degron, GFP, and 3xFLAG tags inserted into endogenous air-1 locus. No overt phenotypes in a zif-1(gk117) background. Predicted no degradation because zif-1 putative null is present. Can be used for degradation of air-1 protein by providing a source of ZIF-1. GFP expression is observed in mitotic cells at the spindle poles and along microtubules. Reference: Sallee M, et al. PLoS Biol. 2018 Aug 6;16(8):e2005189. doi: 10.1371/journal.pbio.2005189. PMID: 30080857.

Presumptive null deletion allele of zif-1. ZF1-tagged proteins are not degraded in zif-1(gk117) background. Genotyping primers: ExtFwd: gctcgcaacgactgacaagg // IntRev: GGTACTCGCGGAACACTCACTC // ExtRev: ATTCGTACGGTACTTGCATGAACC

ZF1-degron, GFP, and 3xFLAG tags inserted into endogenous par-6 locus. No overt phenotypes in a zif-1(gk117) background. Predicted no degradation because zif-1 putative null is present. Can be used for degradation of par-6 by providing ZIF-1. GFP fluorescence is observed at the anterior cortex in zygotes and at apical surfaces in epithelia. Reference: Sallee M, et al. eLife. 2021 Jun 17;10:e64437. doi: 10.7554/eLife.64437. PMID: 34137371.

ZF1-degron, GFP, and 3xFLAG tags inserted into endogenous tpxl-1 locus. No overt phenotypes in a zif-1(gk117) background. Predicted no degradation because zif-1 putative null is present. Can be used for degradation of tpxl-1 protein by providing a source of ZIF-1. GFP expression is observed in microtubules. Reference: Magescas J, et al. eLife. 2019 Jun 27;8:e47867. doi: 10.7554/eLife.47867. PMID: 31246171.

ZF1-degron and GFP tags inserted into endogenous gip-1 locus. No overt phenotypes in a zif-1(gk117) background. Predicted no degradation because zif-1 putative null is present. Can be used for degradation of gip-1 protein by providing a source of ZIF-1. GFP fluorescence is observed at microtubule-organizing centers. Presence of ZF1-degron targets tagged proteins for ZIF-mediated degradation. Expression of ZIF-1 causes the tagged GIP-1 protein to be degraded. Reference: Sallee M, et al. PLoS Biol. 2018 Aug 6;16(8):e2005189. doi: 10.1371/journal.pbio.2005189. PMID: 30080857.

Animals with Dp/+ are WT. Animals which have lost the Dp arrest as L1 with Gob (gut-obstructed) phenotype. Animals with Dp/Dp are sterile homozygotes. gob-1(ca17) is a small deletion, removing nine genes between R03A10.4 and H13N06.4 (inclusive) and possibly the seven additional genes F39D8.2 to R03A10.3 and H13N05.6.

caIs71[elt-2p::GFP::HIS-2B::unc-54 3'UTR + rol-6(su1006)]. Rollers. Expresses nuclear-localized GFP in all intestinal nuclei under control of 5.2 kb elt-2 promoter. GFP is fused to Histone H2B + (fused pie-1 and truncated unc-54 3'-UTR). Transgene was integrated into N2 background by exposure to gamma rays. Reference: Dineen A, et al. Dev Biol. 2018 Mar 15;435(2):150-161. PMID: 29360433

Overall healthy but reduced brood size and pharyngeal pumping rate. Synthetic lethal with emr-1(-). ca19 is a Leu to Arg mutation at position 16 of LEM-2, reconstituting a mutation in the American Hutterite Population that causes juvenile cataracts and premature cardiomyopathy.

GFP and 3xFLAG tags inserted into second exon of endgonenous csr-1 locus; tags both isoforms. Reference: Ouyang JPT, et al. Dev Cell. 2019 Sep 23;50(6):716-728.e6. PMID: 31402283

Null allele of csr-1 with GFP and 3xFLAG tags inserted into second exon of endgonenous csr-1 locus. tor67 would normally tag both long and short isoforms, but the mg660 allele introduces a stop codon into the first exon so the long isoform is not made and only tagged CSR-1B isoform is produced.

Null allele of wago-10. Reference: Seroussi U, et al. bioRxiv 2022.08.08.502013; doi: https://doi.org/10.1101/2022.08.08.502013

Null allele of sago-2; detectable by PCR/restriction digest. Reference: Seroussi U, et al. bioRxiv 2022.08.08.502013; doi: https://doi.org/10.1101/2022.08.08.502013

Presumptive null allele of plc-1. Shows a preference for low salt concentrations. Reference: Kunitomo H, et al., 2013, Nat Commun. 2013;4:2210. doi: 10.1038/ncomms3210.

qIs26 [lag-2::GFP + rol-6(su1006)]. Heterozygotes are Rollers and GFP+ in the distal tip cell. qIs26 was integrated into qC1 and in the process made qC1 homozygous lethal. asb-1(tm498) is homozygous sterile.

qIs26 [lag-2::GFP + rol-6(su1006)]. Heterozygotes are Rollers and GFP+ in the distal tip cell. qIs26 was integrated into qC1 and in the process made qC1 homozygous lethal. asb-1(tm499) is homozygous sterile.