Search Strains

Endogenously tagged temperature sensitive glycine substitution mutant allele (b117) of emb-9. Tagged with mNG at the C-terminus. Temperature sensitive. Semi-dominant. Egg lethal. Not maternal. Will grow at 20C. See also CGC DH117. Reference: Srinivasan S,et al. J Cell Biol. 2025 224(6):e202412118. doi:10.1083/jcb.202412118 PMID: 40100062.

Endogenously tagged temperature sensitive glycine substitution mutant allele (b246) of let-2. Tagged with mNG at the C-terminus. Temperature sensitive embryonic lethal. Grows at 15C, 20C. Lethal at 25C (embryonic). See also CGC DH246. Reference: Srinivasan S,et al. J Cell Biol. 2025 224(6):e202412118. doi:10.1083/jcb.202412118 PMID: 40100062.

Photoconvertible mMaple tag inserted into the endogenous let-2 locus (C-terminus tag). Healthy strain, wild-type growth. Reference: Srinivasan S,et al. J Cell Biol. 2025 224(6):e202412118. doi:10.1083/jcb.202412118 PMID: 40100062.

mNeonGreen tag inserted into N-terminus of endogenous mtx-2 locus in netrin null mutant background (ev400).

qyIs552 [lin-29p::PercevalHR::unc-54 3'UTR + unc-119(+)]. Anchor cell specific expression of ratiometric ATP:ADP biosensor PercevalHR. netrin null mutant background (ev400).

qySi313 [lin-29p::ucp-4::SL2::mKate2::PLC(delta)PH::3xHA::tbb-2 3'UTR] I. qyIs629 [eef-1A.1p::PercevalHR::unc-54 3'UTR + unc-119(+)]. Ubiquitous somatic expression of ratiometric ATP:ADP biosensor PercevalHR. Anchor cell specific overexpression of mitochondrial uncoupling protein, UCP-4, (expression confirmed by presence of red anchor cell membrane). qySi313 inserted into ttTi4348 mosSCI site (I:-5.32) using CRISPR/Cas9-mediated recombination.

qyIs636 [lin-29p::EMTB::GFP::unc-54 3'UTR + unc-119(+)]. Anchor cell specific expression of encosin microtubule binding domain (EMTB) fused to GFP in netrin null mutant background (ev400).

qySi148 [lin-29p::2xmKate2::PLCdeltaPH] I. qyIs636 [lin-29p::EMTB::GFP::unc-54 3'UTR + unc-119(+)]. Anchor cell specific expression of encosin microtubule binding domain (EMTB) fused to GFP. Plasma membrane marker inserted into ttTi4348 mosSCI site (I:-5.32) using CRISPR/Cas9-mediated recombination.

qyIs43 [pat-3::GFP + ina-1(genomic) + unc-119(+)]. Superficially wild-type. Maintain under normal conditions. Reference: Hagedorn et al., Dev Cell (2009) Aug 17(2):187-98.

qyIs46 [emb-9p::emb-9::mCherry + unc-119(+)] X. Superficially wild-type with very low penetrance (~5%) rupture. Integrated collagen::mCherry reporter. Reference: Ihara S, et al. Nat Cell Biol. 2011 Jun;13(6):641-51.

qyIs108 [lam-1p::lam-1::Dendra + unc-119(+)]. High expression in basement membranes; cleaner laminin-dendra expression than NK652. Reference: Ihara S, et al. Nat Cell Biol. 2011 Jun;13(6):641-51.

qyIs109 [lam-1p::lam-1::Dendra + unc-119(+)]. High expression in basement membranes, also accumulates in body wall muscle. Reference: Ihara S, et al. Nat Cell Biol. 2011 Jun;13(6):641-51.

qyIs127 [lam-1p::lam-1::mCherry + unc-119(+)] V. Reference: Ihara S, et al. Nat Cell Biol. 2011 Jun;13(6):641-51.

qyIs161 [emb-9p::emb-9::Dendra + unc-119(+)]. Reference: Ihara S, et al. Nat Cell Biol. 2011 Jun;13(6):641-51.

qyIs174 [hlh-2p::GFP::hlh-2 + unc-119(+)]. Translational fusion protein displaying cytoplasmic and nuclear localization; contains 8 kb upstream, N-terminal GFP fusion, full open reading frame and 3'UTR. Reference: Schindler AJ, Sherwood DR. Dev Biol. 2011 Sep 15;357(2):380-91.

Caenorhabditis inopinata wild isolate; 10x inbred line. Male-Female. Maintain by mating at 25C or above; does not grow well at 20C. See reference for the details d(https://www.nature.com/articles/s41467-018-05712-5). Sibling species of C. elegans. Inbred 10 times, full genome sequence available. Frozen stock recovery is lower efficiency than C. elegans with glycerol; DMSO method works more efficiently. Adult: Large and slender species; ca. 1.5–2.5?mm in length, and individuals may reach up 3.0?mm under optimal culturing conditions. Cuticle is moderate to thick with four-lined lateral field. Deirids on the lateral field, at the level slightly behind the secretory–excretory pore. Lip separated into six sectors, not clearly offset. Six labial sensilla and four cephalic sensilla present. The anterior end of each lip sector very slightly elongated and forming six stomatal flaps. Amphid small, oval pore-like, at the level of the margin of cheilo and gymnostom. Tube-like stoma separated into three parts; short tube-like cheilostom; simple tube-like gymnostom, which is weakly separated into two subsections; and tube-like stegostom covered by pharyngeal sleeve, which is separated into four subsections, prostegostom, mesostegostom, metastegostom, and telostegostom. Metastegostomatal three teeth flap-like. Pharynx separated into four sections; procorpus forming muscular tube, well-developed metacorpus (median bulb); glandular and narrow isthmus; and basal bulb with double haustrulum as the glottoid apparatus. Pharyngo-intestinal valve (cardia) prominent. Nerve ring around the middle of isthmus. Excretory pore located around the margin of isthmus and basal bulb. Female: Gonadal system didelphic, amphidelphic. Anterior and posterior gonadal system are basically symmetric with each other, arranged as ovary, oviduct, spermatheca, spermathecal-uterus junction tissue, uterus and vulva/vagina from distal. Sometimes more than 20 developing eggs are deposited. Tail conical or forming slightly elongated conus with pointed tip. Anus and rectum clearly visible; three (two subventral and one dorsal) rectal glands present. Phasmid forming small pore at ca. 60% of total tail length from anus. Male: Testis single, anteriorly reflexed rightwardly. Vas deferens occupying ca. 1/5 of total gonadal length. Tail enveloped by a closed bursa, supported by nine pairs of bursal rays. Anterior cloacal lip with a rounded and sclerotized appendage and bulge-like appendage between rounded appendage and cloacal opening; a small sensilla-like papilla on the bulge-like appendage. Posterior cloacal lip with tongue-like appendage with two cloacal sensilla. Spicules paired, separate, long and slender with evenly slightly ventrally curved blade and simply pointed tip. Gubernaculum slender, ventrally arcuate with small squared appendage at the distal end in lateral view. Bursa heart-shaped in ventral view, anteriorly closed with serrated edge; serratae obvious in anterior half and vague in posterior half; terminal notch present but unclear. The nine pairs of genital papillae or bursal rays supporting the bursal velum with an arranged (2/1?+?1?+?2?+?3).

pkIs591[dpy-20(+) + gap-15::GFP]. GFP expression in ADL, ASH, ASK, PHA, PHB, distal tip cell, anchor cell, and many male-specific neurons.

pkIs2084 [col-10::LacZ::lin-41 + goa-1::GFP]. Heterozygous. pash-1(pk2083)/+ heterozygotes look wild-type and will segregate pash-1(pk2083)/+ heterozygotes, sterile pk2083 homozygotes, and wild-type. Pick wild-type heterozygotes and check for segregation of sterile progeny to maintain.

Molecular null. No morphological changes. Wild type locomotion and egg laying.

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.

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. js317 is a W->Stop at aa 861. 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.

Uncoordinated and aldicarb resistant. Molecular lesion: deletion of entire unc-10 coding region. Gene encodes C. elegans homolog of Rab3 interacting molecule. Will mate, but poorly.

jsIs682 [rab-3p::GFP::rab-3 + lin-15(+)]. Expresses rab-3::GFP in most, if not all, neurons. rab-3::GFP is localized primarily to synaptic regions.

jsIs423 [rbf-1::GFP + rol-6(su1006)]. Rollers. Maintain under normal conditions. Reference: Mahoney TR., et al. Mol Biol Cell. 2006 Jun;17(6):2617-25.

jsIs973 [mec-7p::mRFP + unc-119(+)] III.  oxIs12 [unc-47p::GFP + lin-15(+)] X. oxIs12 integration maps at +2.0 on X. Strong RFP cytosolic marker for mechanosensory neurons (Zheng et al. 2011, PMID 21115607). Expression of GFP in all GABAergic neurons.

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.

Heterozygotes are WT and segregate WT, Bli and L1 arrested paralyzed animals (js115 homozygotes). Well balanced.

Maintain at 15-20C: will form dauers at higher temps. Slow growing. Pick GFP+ to maintain. Heterozygotes are GFP+ and segregate WT GFP+ hets, arrested nT1[qIs51] aneuploids, and non-GFP daf-2(e1370); isp-1(qm150) homozygotes (sterile). Homozygous nT1[qIs51] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. [NOTE: Originally published daf-2(e1370); isp-1(qm150) strain MQ876 was found to not actually contain the daf-2(e1370) mutation. This strain was made to study the double mutant and revealed that daf-2(e1370); isp-1(qm150) homozygotes are inviable/sterile.] Reference: Cooper et al. In preparation.

cdIs54 [pcc1::MANS::GFP + myo-2p::GFP + unc-119(+)]. Ballistic transformation. Mannosidasell::GFP (Golgi marker) expressed in front coelomocyte promoter.

qnIs303 [hsp-16.2p::flp-13 + hsp-16.2p::GFP + rab-3p::mCherry] IV. When cultivated at 20 degrees, all animals have red nervous systems. Following heat shock, animals are immobile, do not feed, and show green fluorescence in somatic cells. Reference: Nelson MD, et al. Curr Biol. 2014 Oct 20;24(20):2406-10.

Abnormal distal tip cell migration detectable as clear patches in anterior and posterior. Partially penetrant embryonic arrest and early larval lethal.

Abnormal distal tip cell migration detectable as clear patches in anterior and posterior. Partially penetrant embryonic arrest and early larval lethal.

jcIs1 [ajm-1::GFP + unc-29(+) + rol-6(su1006)] IV. ajm-1 was formerly known as jam-1 (Junction Associated Protein) and "the gene encoding the antigen recognized by the monoclonal antibody MH27." jcIs1 consists of pJS191, C45D3 and pRF4. Reference: Koppen M, et al. Nat Cell Biol. 2001 Nov;3(11):983-91.

Heterozygotes display abnormal distal tip cell migration detectable as clear patches in anterior and posterior. Heterozygotes segregate WT, Dpy, abnormal DTC migration, Unc, and dead eggs. Maintain by picking wild-type.

Heterozygotes display partially penetrant (~10%) abnormal distal tip cell migration detectable as clear patches in anterior and posterior. Heterozygotes segregate WT, abnormal DTC migration, Unc, and dead eggs. Maintain by picking wild-type.

Null allele. Enhances sensory ray fusion defect of mab-20(bx61). No fusions as single. Some embryonic and larval lethality.

jcIs1 [ajm-1::GFP + unc-29(+) + rol-6(su1006)] IV. Strain does not Roll but otherwise seems fine. Male ray 1 anterior displacement in homozygous animals. Genetic interaction with smp-2(ev709). Vulva cell migration defects. ajm-1 was formerly known as jam-1 (Junction Associated Protein) and "the gene encoding the antigen recognized by the monoclonal antibody MH27." jcIs1 consists of pJS191, C45D3 and pRF4. Reference: Koppen M, et al. Nat Cell Biol. 2001 Nov;3(11):983-91.

evEx193 [semala::GFP]. GFP fluorescence in interneurons (AVL), the excretory channel, the distal tip cells (DTC), somatic cells of the gonad, epidermal cells. In adult, expression in the fused seam cell syncitium.

jcIs1 [ajm-1::GFP + unc-29(+) + rol-6(su1006)] IV. Strain does not Roll but otherwise seems fine. Male ray 1 anterior displacement in homozygous animals. Genetic interaction with smp-1(ev715). ajm-1 was formerly known as jam-1 (Junction Associated Protein) and "the gene encoding the antigen recognized by the monoclonal antibody MH27." jcIs1 consists of pJS191, C45D3 and pRF4. Reference: Koppen M, et al. Nat Cell Biol. 2001 Nov;3(11):983-91.

Unc. Loss-of-function or null allele.

GFP tag inserted into endgonenous lgl-1 locus. LGL-1::GFP expressed throughout the worm at all developmental stages. Reference: Rodrigues NTL, et al. Development. 2022 Jul 15;149(14):dev200545. PMID: 35713287

Temperature-sensitive maternal effect lethal; 99% of embryos fail to hatch at 25 C. Maintain at 15-20 C. Reference: Song et al. (2008) Dev Cell 15:901-12.

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.

Homozygous sterile mutation 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 tm1598 homozygotes (produce ~100% dead eggs, slightly higher penetrance at 25C). Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Peters N, et al., J Cell Sci. 2010 Mar 1;123(Pt 5):795-805.

Phenotypically wild-type for brood size, viability, Dyf and male mating efficiency. Strain OC306 is identical to OC422: the same out-crossed stock was frozen down twice in lab stocks. Reference: Chawla DG, et al. Biol Open. 2016 Sep 15;5(9):1290-8. doi: 10.1242/bio.017442. PMID: 27635036

Phenotypically wild-type for brood size, viability, Dyf and male mating efficiency. Reference: Chawla DG, et al. Biol Open. 2016 Sep 15;5(9):1290-8. doi: 10.1242/bio.017442. PMID: 27635036

Phenotypically wild-type for brood size, viability, Dyf and male mating efficiency. Reference: Chawla DG, et al. Biol Open. 2016 Sep 15;5(9):1290-8. doi: 10.1242/bio.017442. PMID: 27635036

Phenotypically wild-type for brood size, viability, Dyf and male mating efficiency. Reference: Chawla DG, et al. Biol Open. 2016 Sep 15;5(9):1290-8. doi: 10.1242/bio.017442. PMID: 27635036

Reference: Chawla DG, et al. Biol Open. 2016 Sep 15;5(9):1290-8. doi: 10.1242/bio.017442. PMID: 27635036

ltSi597 [knl-1p::knl-1::mCherry::knl-1 3'UTR Cbr-unc-119(+)] I. mCherry labeled KNL-1. Reference: Hattersley et al., Dev Cell 2016 Sep 12;38(5):463-77. doi: 10.1016/j.devcel.2016.08.006. PMID: 27623381