Search Strains

Egl. Fails to complement daf-14 as well; small deletion or background?? [NOTE: The CGC has received reports that n476 might be heterozygous in this strain. KP2018 is an outcrossed version of this strain and has been confirmed as homozygous for n476.].

Heterozygotes are Unc. ok343 is lethal or has a linked lethal.

Heterozygotes are WT and GFP+. hT2[qIs48] animals are recessive lethal. n1306 is recessive late larval lethal. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype.

Heterozygotes are WT and GFP+. hT2[qIs48] animals are recessive lethal. n1315 is recessive lethal. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype.

Heterozygotes are WT and GFP+. hT2[qIs48] animals are recessive lethal. n1318 is recessive lethal. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype.

Heterozygotes are WT and GFP+. hT2[qIs48] animals are recessive lethal. n1319 is recessive lethal. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype.

Heterozygotes are WT and GFP+. hT2[qIs48] animals are recessive lethal. n1320 is recessive lethal. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype.

Complete deletion allele of mir-256 from bases 5826-6853 on T07H8. This mutation likely has a polar effect on mec-1, which starts at 6924 on T07H8 (the deletion covers putative promoter elements).

Both deletions are homozygous by PCR. mir-63, mir-229, mir-64, mir-65, and mir-66 are related in sequence. nDf63 removes mir-229, mir-64, mir-65, and mir-66. nDf63 was outcrossed 6x; n4568 has been outcrossed 2x. Reference: Curr Bio (2010) doi:10.1016/j.cub.2009.12.051.

Unc-Lethargic. Mec. Egl. ts Dpy. n847 has a Him phenotype.

Heterozygotes are Dpy and segregate Dpy, DpyUnc and dead eggs. e1259 has a ts maternal effect.

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. Segregates Dpy Sterile and Dpy Unc.

Heterozygotes are WT and GFP+ in the pharynx. qIs48 is an insertion of ccEx9747 (carries myo-2::GFP, pes-10::GFP, and a gut enhancer fused to GFP) onto the hT2 chromosome and is homozygous lethal. Presence of ces-1 is inferred from strain construction but not experimentally verified. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype. Reference: Nakano S, et al. Cell. 2011 Dec 23;147(7):1525-36.

Defective locomotion in response to blue/UV light. Double mutant has almost no response to light. Reference: Bhatla N & Horvitz HR. Neuron. 2015 Feb 18;85(4):804-18.

77% Vul. Probably has a linked suppressor mutation - see WBPaper00002382.

Maintain at 15C. glp-1(q231) is temperature sensitive. Unc. ced-7(n1892) causes persistent cell corpes and has a maternal effect.

[egl mutation (n1397) has been removed in this strain.]

WT C. elegans. From Cambridge collection-originally frozen around 1968: In 1980, in order to establish an ancestral stock, Jonathan Hodgkin thawed one of the earliest frozen tubes of N2, dating from 1968. From this plate J.H. grew up a population en masse (without subculturing) on NGM plates (about 2 generations). Multiple samples of this were frozen in order to provide a reference N2 stock. This set of stock samples was replenished by regrowth in 1985 and 1991, using the same procedure, and a freshly thawed sample was sent to the CGC in 1993. Thus, samples from this frozen stock, called N2 (ancestral), should be only about 6 generations away from the stock used by Sydney Brenner as his standard WT N2. [Isolated from mushroom compost near Bristol, England by L.N. Staniland. Cultured by W.L. Nicholas, identified to genus by Gunther Osche and species by Victor Nigon; subsequently cultured by C.E. Dougherty. Given to Sydney Brenner ca. 1966.] Caenorhabditis elegans wild isolate. Note: N2 (ancestral) has reduced lifespan and fertility relative to the standard CGC N2 strains. See Worm Breeder's Gazette 16(5): 24 (February 1,2001).

C. elegans var Bristol. Self-fertilizing hermaphrodite. Generation time is about 3.5 days at 20C. Male stock maintained by mating. Also CGC reference 257. Isolated from mushroom compost near Bristol, England by L.N. Staniland. Cultured by W.L. Nicholas, identified to genus by Gunther Osche and species by Victor Nigon; subsequently cultured by C.E. Dougherty. Given to Sydney Brenner ca. 1966. Subcultured by Don Riddle in 1973. Caenorhabditis elegans wild isolate. DR subclone of CB original (Tc1 pattern I). [NOTE: (09/07/2018) The Gems Lab has identified a mutation in the gene fln-2 carried in this stock causing an increased lifespan. The effect is quite modest (+11%, median lifespan), but this effect can be more pronounced in other genetic backgrounds.] [NOTE: (03/26/2018) - a user reported the stock they received was homozygous wild-type for alh-2; some N2 stocks carry the ot588 mutation in alh-2.)

Bacteria. Jim Lewis received this E. coli strain from Henry Epstein in 1977. It is a prototroph and the worms grow well on it in liquid, even when the bacteria are highly labeled with 35-S. It hasn't been tested to see if it is temperature sensitive. It should be distributed as "Jim Lewis' NA22" until it has been confirmed that this is a certified version of NA22. Biosafety Level: BSL-1. Grow on NGM.

unc-37(wd17) is a dominat suppressor of unc-4(e2322ts). unc-37(wd17) has no phenotype alone.

Isolated as a dominant suppressor of DTC migration defects of mig-17(k174). The fbl-1(k201) single mutant has weak DTC migration defects.

Isolated as a dominant suppressor of DTC migration defects of mig-17(k174). The fbl-1(k206) single mutant has weak DTC migration defects.

Heterozygotes are Unc and segregate Unc, SmaUnc and UncVul. ay42 is a strong Vul and is recessive. ay42 has slow growth.

Caenorhabditis sp 36 wild isolate. Male-female strain. Maintain by mating. Maintain at 25C. A gonochoristic species isolated from adult weevils (Niphades variegatus), with whom they appear to be tightly associated during its life cycle. A genome comparison highlighted that C. sp. 36 has the smallest genome so far sequenced in the elegans supergroup, despite of being closely related to the largest genome species, C. japonica.

pkEx467 [acy-2(+) + rol-6(su1006)]. pk465 was isolated from a chemical deletion library and has a deletion of the first catalytic domain and the two multiple transmembrane regions of the predicted ACY-2 protein. The phenotype of pk465 is early larval lethality. The lethal phenotype of pk465 is rescued in NL1242 by a transgene containing WT acy-2 (cosmid C10F3) and rol-6.

pk690 is a deletion allele within the gene C32E8.7. The deletion is stable in the homozygous state and has no obvious phenotype. Can verify the presence/homozygosity of the deletion by PCR using the following primers: AL1: 5'-CGACGACACTCCATTATTCC-3' AR1: 5'-CCAGTCCTGCAAAAATGCTC-3'. A product of about 3.7 kb is obtained from WT worms, while a product of about 1 kb is obtained from NL2003 worms. The deletion has been sequenced and covers position -354 to +2276.

pkEx170 [gpb-1(+) + rol-6(su1006)]. Rollers. Pick Rollers to maintain. NL361 is homozygous for the gpb-1 deletion allele pk44; this results in an L1 arrest if the larvae has maternally derived GPB-1 or in an early embryonic lethality if there is no maternally derived GPB-1 for the developing embryo. This phenotype is rescued by the extrachromosomal transgene which contains the WT gpb-1 gene.

Mutator strain. Throws males. See WBG 14(2): 24. Strain has a ts phenotype: dies out at 25C, grows at 20C, but best kept at 18-20C. Not known whether it is the mut-7 allele that is ts or something else.

jsIs37 [mec-7p::snb-1::GFP) + lin-15(+)]. Superficially wild-type. snb-1::GFP expression in a subset of mechanosensory neurons; GFP is faint and can only be seen on a compound microscope. Reduced SNB-1::GFP localization to synaptic regions; slighty Dpy. js410 has linked phenotype of reduced brood size. js410 is an R->Stop at aa 235. snb-1::GFP is expressed in mechanosensory neurons visible in the cell body and in the axon (very low levels). GFP puncta absent from the ventral nerve cord due to rpm-1 lesion.

rep-1(ok3296) homozygotes arrest as uncoordinated non-pumping starved L2/L3 animals. sC1(s2023) dpy-1 homozygotes are viable dpy animals. Heterozygotes are wild-type. Pick wild-type and check for correct segregation of progeny to maintain. ok3296 deletes 556 bp including the first 54 bp of exon 6 and has the sequence junction AGCTGAAACCGGTGCTACAG/CCATTCCTCTTCCCACTCTA. This strain replaces RB2411, which was an unbalanced heterozygous strain; also see NM4431. Reference: Dour S and Nonet ML. In preparation.

jsIs682 [rab-3p::GFP::rab-3 + lin-15(+)] III. rep-1(ok3296) homozygotes arrest as uncoordinated non-pumping starved L2/L3 animals with GFP::RAB-3 mislocalized to neuronal cell bodies. Presence of jsIs682 makes definitive identification of ok3296 homozygotes much easier. sC1(s2023) dpy-1 homozygotes are viable dpy animals. Heterozygotes are wild-type. Pick wild-type and check for correct segregation of progeny to maintain. ok3296 deletes 556 bp including the first 54 bp of exon 6 and has the sequence junction AGCTGAAACCGGTGCTACAG/CCATTCCTCTTCCCACTCTA. This strain replaces RB2411, which was an unbalanced heterozygous strain; also see NM4337. Reference: Dour S and Nonet ML. In preparation.

evIs41[mec-7::lacZ; mec-7::unc-5; dpy-20(+)] V. Suppresses axon guidance phenotype ofmec-7::unc-5. Has slight Uncoordinated phenotype.

evIs41[mec-7::lacZ; mec-7::unc-5 + dpy-20(+)] V. Suppresses axon guidance phenotype ofmec-7::unc-5. Has slight Uncoordinated phenotype.

it24 is temperature sensitive; produces maternal effect embryonic lethal phenotype (Mel) after shoft to 24C at L4 stage. Mel is partially suppressed by bs21 at 24C. szy-10(bs21) has a partially penetrant embryonic lethal phenotype at all temperatures. Reference: Kemp C, et al. (2007) Genetics 176:95-113.

ltSi1 [knl-1p::knl-1(re-encoded)::RFP + Cbr-unc-119(+)] II. KNL-1::RFP has been re-coded to be knl-1(RNAi) resistant. Reference: Espeut J, et al. Cell Rep. 2015 Jul 7;12(1):58-65. doi: 10.1016/j.celrep.2015.05.039. PMID: 26119738

mNeonGreen and Flag tags inserted at 5' end of endogenous cyb-3 locus using CRISPR/Cas9 engineering. Strain has lethality and brood size defects. gRNA sequence: tgaagtcaggtcgacattct Reference: Lara-Gonzalez P, et al. Dev Cell. 2019 Nov 4;51(3):313-325.e10. doi: 10.1016/j.devcel.2019.09.005. PMID: 31588029.

ltSi264 [bub-1p::bub-1(re-encoded)::RFP + Cbr-unc-119(+)] II. BUB-1::RFP has been re-coded to be knl-1(RNAi) resistant. Reference: Pelisch F, et al. Mol Cell. 2017 Jan 5;65(1):66-77. doi: 10.1016/j.molcel.2016.11.001. PMID: 27939944

F39B2.9/TMEM-107 has been shown to control the localization of 4 peripheral ciliary transition zone proteins. tmem-107(oq100); nphp-4(tm925) double mutants display ultra-structural malformations in ciliary transition zones, and exhibit sensory abnormalities including roaming, chemoattractant, and dye-filling defects. TRAM-1::tdTomato leaks into cilia in oq100 mutants. Genotyping primers: Forward cgcggttcttcttgtttctt, Reverse wildtype gagatcgagacggcgacg, Reverse oq100 gaaaaacaacgtggaagtcca. Reference: Lambacher NJ, et al. Nat Cell Biol. 2016 Jan;18(1):122-31.

Segregates WT GFP+ heterozygotes, larval-arrested ok600 homozygotes, very rare GFP+ homozygous hT2, and dead eggs. Maintain by picking wild-type GFP+. [NOTE: Although ok600 has been reported as a 1085 bp deletion in hsf-1, sequencing of the hsf-1 PCR product revealed only an 877 bp deletion (5'-AAATAAAAATTTCTTAGAAA [877 bp deletion] TGTACATGGGATCCGGTCCA-3'). (Lamitina Lab, 12/17/2012)]

drIs4 [gpdh-1p::GFP + col-12p::DsRed] IV. ogt-1(dr20) was isolated in an ENU screen in parental strain OG119 for mutants with decreased induction of the gpdh-1p::GFP reporter during hypertonic stress. dr20 is a presumptive null allele [Q600STOP]. OG969 has decreased gpdh-1p::GFP induction during hypertonic stress and impaired adaptation to hypertonic stress. Constitutive col-12p::DsRed expression. Reference: Urso SJ, et al. (2020). The O-GlcNAc transferase OGT is a conserved and essential regulator of the cellular and organismal response to hypertonic stress. bioRxiv, 2020.2005.2001.072033.

drIs4 [gpdh-1p::GFP + col-12p::DsRed] IV. ogt-1(dr20) was isolated in an ENU screen in parental strain OG119 for mutants with decreased induction of the gpdh-1p::GFP reporter during hypertonic stress. dr15 is a presumptive null allele [R267STOP]. OG971 has decreased gpdh-1p::GFP induction during hypertonic stress and impaired adaptation to hypertonic stress. Constitutive col-12p::DsRed expression. Reference: Urso SJ, et al. (2020). The O-GlcNAc transferase OGT is a conserved and essential regulator of the cellular and organismal response to hypertonic stress. bioRxiv, 2020.2005.2001.072033.

mgIs18 [ttx-3p::GFP] IV. otIs35 [ttx-3p::kal-1 + rol-6(su1006)] X. otIs35 has been mapped to LG X between lon-2 and hst-6. Rollers. ttx-3p::GFP labels AIY interneurons. ot19 suppresses the branching phenotype of KAL-1 overexpression in AIY. hst-6(ot19) is closely linked to otIs35.

otIs77 [ttx-3p::kal-1 + unc-122p::GFP] II. Overexpressing line from P. Loria. The integrated array has been mapped to LG II between stP36 and maP1. AIY interneurons have a 100% penetrant axon branching phenotype. Otherwise, the animals look phenotypically wild type.

otIs35 [ttx-3p::kal-1 + rol-6(su1006)] X. otIs35 has been mapped to LG X between lon-2 and hst-6. Superficially wild-type; AIY interneurons have a 100% penetrant axon branching phenotype.

dvIs62 [snb-1p::hTDP-43/3' long UTR + mtl-2p::GFP] X. Temperature-sensitive. Maintain at 16C to minimize selection against transgene. [NOTE: Out-crossing has eliminated embryonic lethality seen in parental strain CL6049 when raised at 25C.] Uncoordinated from hatching; phenotype is stronger at higher temperatures. Intestinal GFP expression. Parental strain CL6049 out-crossed 6x to N2. Reference: Koopman M, et al. MicroPubl Biol. 2023 Apr 19:2023:10.17912/micropub.biology.000766. doi: 10.17912/micropub.biology.000766. eCollection 2023. PMID: 37151213.

Unc. According to Withee (2004), gm104 has been sequenced and introduces an early amber stop at W24. Reference: Withee J, et al. Genetics. 2004 Jul;167(3):1165-76. PMID: 15280232

ccIs55 [unc-54::lacZ + sup-7(st5)] V. Strain PD55 is transformed with plasmid pPD9.10 (which has a non-nuclear unc-54::lacZ fusion and a copy of the sup-7(st5) gene).

dcr-1 homozygotes are completely sterile. qIs48 is an insertion of ccEx9747 with markers: myo-2::GFP expressed brightly in the pharynx throughout development, pes-10::GFP expressed in embryos, and a gut promoter driving GFP in the intestine, and is homozygous lethal. Segregates WT glowing hets, non-glowing steriles , very rare homozygous hT2 glowing animals, and dead eggs. 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. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype.

Endogenous eif-2D locus tagged with 3xFLAG. The SUI1 domain of the endogenous EIF-2D locus has been deleted and replaced with 3xFLAG via CRISPR/Cas9 gene editing. Reference: Sonobe Y, et al. Nat Commun. 2021 Oct 15;12(1):6025. doi: 10.1038/s41467-021-26303-x. PMID: 34654821