Search Strains

Homozygous viable. Deletion of 670 bp with Calarco/Colaiacovo selection cassette conferring myo-2 GFP and G418 resistance inserted at break in parental strain N2. Left flanking Sequence: GAAAAAAACGATAAAAAATGCTTATAAAAT; Right flanking sequence: AGGTGATCGCAGTGCCAACGAGTGTAGCAG. sgRNA #1: ATTATTTTCAGACGCTGTCC; sgRNA #2: CCGCGAAGAGAAGCAATTCG. Please reference Au et al., G3 9(1): 135-144 2019 in any work resulting from use of this mutation.

umnIs49 [myo-2p::mKate2 + NeoR, V: 1005689 (intergenic)] IV. Pick viable fertile GFP+ and mKate2+ animals to maintain. Apparent homozygous lethal or sterile deletion balanced over nT1. Heterozygotes are wild-type GFP+ mKate2+, and segregate wild-type GFP+ mKate2+, Vul mKate2+ (nT1) and dead eggs. Derived from parental strains VH7205 and CGC63. hd7205 is a 672 bp deletion with Calarco/Colaiacovo selection cassette conferring myo-2 GFP and G418 resistance inserted at break. Left flanking Sequence: GACTCGAACTCAATTTGCATGTTGATAGTT; Right flanking sequence: TGGTTAGAAAAAGATACGGAGAGGAGAAGT. sgRNA #1: CCAATGTTAAAGAAAGTCTT; sgRNA #2: AAACTCTCTTATAGCACAGT. Please reference Au et al., G3 9(1): 135-144 2019 in any work resulting from use of this mutation.

Maintain by picking viable fertile GFP+ and mCherry+. Apparent homozygous lethal or sterile deletion balanced with FX30266. Heterozygotes are wild-type GFP+ and mCherry and segregate wild-type GFP+ mCherry, GFP+ homozygotes, and tmIs1226 mCherry+ homozygotes. Derived from parental strains VH7179 and FX30266. hd7179 is a deletion of 1609 bp with Calarco/Colaiacovo selection cassette conferring myo-2 GFP and G418 resistance inserted at break in parental strain N2. Left flanking Sequence: AGACATTGCACACCGGACGATGAATCTCCA; Right flanking sequence: TGGAATATCCATCACCTGTAGAAATAAAAA. sgRNA #1: GGCAAAAGCTTTCCAAAACG; sgRNA #2: TCGAAAACTCGCCGTGCCGC. Please reference Au et al., G3 9(1): 135-144 2019 in any work resulting from use of this mutation.

pmcIs1 [ant-1.1p::ant-1.1::GFP + unc-119(+)]. Expression of ant-1.1::GFP under ant-1.1 promotor (Farina et al., Dev Dyn 2008) in most tissues including the gonads and in the spermatozoa. GFP intensity is low and unstable. GFP positive worms should be selected under fluorescence microscope. ant-1.1::GFP expression seems to be more stable when worms are grown at 24°C and in the dark. Reference: Al Rawi S, et al. Science. 2011 Nov 25;334(6059):1144-7.

C. briggsae wild type strain collected in Hawaii.

neEx15 [myo-2::RFP + myo-2::avr-15(+) + unc-119(+)]. MosSCI recipient strain. neEx15 rescues unc-119, making the worms healthier for injection. The array is counter-selectable. Reference: Shirayama M, et al. Cell. 2012 Jul 6;150(1):65-77.

qaIs8400 [let-858p::Ov-GST-3 + rol-6(su1006)]. Called AK1 in the reference article. The Ov-GST-3 gene was amplified from genomic DNA of O. volvulus with 1µM of the sequence specific primer 5'Klon and 3'Klon (5'Klon: 5'-GGCGTACGATGTCAAGATTTCCTCAACAAG-3'; 3'Klon: 5'-GGTCTAGATTTATTTAGGAATGATTGAATCGGTCG-3'; representing bases 4 - 25 and the complementary sequence of bases 821 - 841 of the published Ov-GST-3 cDNA (AF203814); bold underlines indicate restriction sites for Pfl23II (SplI) and XbaI, respectively; dotted underline indicates the start codon for translation; italics indicates the conserved sequence for the polyadenylation signal for transgenic transcript processing; the 8 5'-nucleotides of primer 3'Klon and the fourteen 5'-nucleotides of primer 5'Klon do not correspond to the template and introduce the sequences to the amplicon), 200 µM of each deoxynucleotide (Gibco BRL) and 2.5 units of Taq polymerase (Gibco BRL). After an initial denaturation of 3 minutes at 93°C, 35 cycles of annealing at 55°C for 1 minute, synthesis at 72°C for 2 minutes and a 1 minute denaturation at 93°C were performed, followed by a final extension at 72°C for 5 minutes. The genomic Ov-GST-3 fragment obtained by PCR (see above) was ligated into the pGEM-T Easy vector (Promega) by TA-cloning, cleaved with the restriction enzymes Pfl23II (SplI) and XbaI (restriction sites introduced by the primer) and inserted between the unique Pfl23II (SplI) and XbaI sites of the vector pPD103.05 (kindly provided by A. Fire). The sequence of the genomic Ov-GST-3 fragment in the resulting plasmid pAK1 was confirmed by automated dye terminator, dideoxy sequencing (ABI Prism 377TM Sequencer, PE Applied Biosystems) using the PCR primers (see above). The pAK1 DNA was injected in combination with the marker plasmid pRF4 [rol-6(su1006)] into the gonads of N2 C. elegans at a concentration of approximately 100 ng/µl for each plasmid. Transgenic worms were identified by the selectable Roller marker phenotype and the stable transmitting line AK1ex (AK1 extrachromosomal) was established. Integration of the extrachromosomal arrays was achieved by irradiation of AK1ex worms with 3600 rad (1 rad = 0.01 Gy) of x-rays (x-ray chamber: RUM 9421-070-77002, Philips, Netherlands; dosimeter: PTW-SN4, PTW, Germany). The progeny of these worms was then screened for 100% transmittance of the Roller phenotype to obtain the C. elegans line AK1int (AK1 integrated) with the chromosomally integrated transgenes.

wpEx505 [ocr-3p::mEGFP + pha-1(+)]. Maintain at 23-25C to select for array. PVP neurons are marked with mEGFP. Can be used to isolate PVP by FACS. Used by CeNGEN project for RNA-Seq (https://www.cengen.org/). The ocr-3p::mEGFP plasmid used to generate this strain was provided by Dr. Patrick Laurent.

wpEx517 [srab-20p::Neptune2.5 + pha-1(+)]. Maintain at 25C to select for animals carrying the array. Neptune2.5 expression in PHB neuron can be used to isolate PHB by FACS. Used by CeNGEN project for RNA-Seq (https://www.cengen.org/).

otIs707 [bnc-1p(1.8kb)::GFP]. wpEx525 [nlp-38p::NLS::TagRFP + pha-1(+)]. Maintain at 25C to select for animals carrying the array. GFP expression in VA neurons can be used to isolate VA by FACS (exclude TagRFP). Used by CeNGEN project for RNA-Seq (https://www.cengen.org/).

Point mutation C133Y. No easily detected phenotype, selected for suppression of mec-4(d)-induced degeneration caused by ectopic expression of mec-4(d)-induced neurodegeneration. Bent-head.

Point mutation in G102E. No easily detected phenotype, selected for suppression of mec-4(d)-induced degeneration caused by ectopic expression of mec-4(u231) in the ventral nerve cord. Bent-head.

ljIs131 [myo-3p::GCaMP3::UrSL2::tagRFP-T]. hpEx4340 [nmr-1p::TeTx::wCherry + sra-11p::TeTx::wCherry + HygromycinR]. Animals carrying the array show additional red fluorescence in the head compared to those that have lost the array. Transgenic animals are severely Unc. RFP positive head neuron soma can be observed under V16 in older animals. Hygromycin can be used to select for hpEx4340 transgenic animals. Reference: Lu Y, et al. Curr Biol. 2022 Nov 7;32(21):4631-4644.e5. doi: 10.1016/j.cub.2022.09.002. PMID: 36182701.

ljIs131 [myo-3p::GCaMP3::UrSL2::tagRFP-T]. hpEx4343 [acr-5p::TeTx::wCherry + unc-4p::TeTx::wCherry + HygromycinR]. Pick animals with wCherry expression in ventral cord neurons to maintain hpEx4343. Animals carrying the array show additional red fluorescence in the head compared to those that have lost the array. Animals carrying hpEx4343 rest as coilers strongly biased towards ventral bend as L1 larvae and are severely Unc as adults. Coiling is somewhat suppressed in the ljIs131 background, but animals still exhibit an obvious bias towards ventral bend during movement. Hygromycin can be used to select for hpEx4343 transgenic animals. Reference: Lu Y, et al. Curr Biol. 2022 Nov 7;32(21):4631-4644.e5. doi: 10.1016/j.cub.2022.09.002. PMID: 36182701.

Stiff backing. Presumptive null. This strain carries two CRISPR-engineered deletions to ensure complete knockout of ubr-1 function. hp821 is a deletion in the 5 ' end of ubr-1 and hp833 is a deletion near the 3' end of the gene. Reference: Chiturri J, et al. PLoS Genet. 2018 Apr 12;14(4):e1007303. doi: 10.1371/journal.pgen.1007303. eCollection 2018 Apr. PMID: 29649217.

zxIs12 [F49H12.4P::ChR2(H134R)::mCherry + F49H12.4P::GFP]. Strain expresses Channelrhodopsin-2 (ChR2(H134R)::mCherry) and GFP (as marker) in PVD and AQR, as well as in a non-identified tail neuron, using the F49H12.4 promoter. When grown in the presence of all-trans retinal and illuminated with blue light, animals show strong forward locomotion escape behavior, which can be quantified using locomotion video tracking. The strain can be used to analyze function of PVD cells, and to estimate the role of specific genes in the function of this polymodal nociceptor, downstream of depolarization via ChR2. All-trans retinal needs to be added with OP50 bacteria when seeding plates to render ChR2 functional. References: Husson S, et al. Curr Biol. 2012 May 8;22(9):743-52. Smith CJ, et al. Neuron. 2013 Jul 24;79(2):266-80. Cohen E, et al. Molecular and Cellular Neuroscience 2104 59C: 85-96.

zxIs12 [F49H12.4P::ChR2(H134R)::mCherry + F49H12.4P::GFP]. Strain expresses Channelrhodopsin-2 (ChR2(H134R)::mCherry) and GFP (as marker) in PVD and AQR, as well as in a non-identified tail neuron, using the F49H12.4 promoter (see also ZX679). When grown in the presence of all-trans retinal and illuminated with blue light, animals show strong forward locomotion escape behavior, which can be quantified using locomotion video tracking. The strain can be used to analyze function of PVD cells, and to estimate the role of specific genes in the function of this polymodal nociceptor, downstream of depolarization via ChR2. All-trans retinal needs to be added with OP50 bacteria when seeding plates to render ChR2 functional. This strain is in lite-1(ce314) background, which eliminates the photophobic behavioral response that will be startled by blue light when longer light stimuli are used (>1s). To not confuse the photophobic behavior induced by LITE-1, with the PVD evoked escape behavior, this strain is needed for experiments with prolonged photostimulation. References: Husson S, et al. Curr Biol. 2012 May 8;22(9):743-52. Smith CJ, et al. Neuron. 2013 Jul 24;79(2):266-80. Cohen E, et al. Molecular and Cellular Neuroscience 2104 59C: 85-96.