Search Strains

Maintain at 15C. cyk-1(or596) is temperature-sensitive embryonic lethal. arIs198 [glt-3p::CFP + glt-3p::LifeAct::TagRFP]; expresses cytoplasmic CFP and LifeAct::TagRFP in the excretory canal cell under control of the glt-3 promoter. Shortened excretory canals. Strain is quite sick even at the permissive temperature.

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.

Heterozgyotes are WT and segregate WT, DpyUncs, and Unc Pho (slightly slow growing, about 15% shorter than WT and produce about 60% inviable embryos; early broods are less viable than later broods).

seaIs201 [myo-3p::human tau (0N4R;V337M)::unc-54 3'UTR + vha-6p::mCherry::unc-54 3'UTR]. Reduced crawling speed, reduced brood size, shortened lifespan, slow development, early paralysis. Human tau transgene is expressed in body wall muscles, producing strong phenotypes suitable for screening and is sensitive to knockdown by feeding RNAi. Generated in N2 background.

Heterozygotes are Unc and segregate Unc, Twitchers which give only dead eggs, and dead eggs. nT1 heterozygotes are shorter and slower than par-5 unc-22 homozygous worms. par-5 region is not well balanced by nT1: check to make sure that unc-22 homozygotes lay dead eggs. Strict maternal effect lethal.

uaIs26 [(p016bT434M) nuo-1(+) + unc-119(+)]. Carries integration of nuo-1(T434M) in a plasmid derived from pDP#MM016b. Complements both nuo-1(ua1) and unc-119(ed3). Generated via microparticle bombardment, therefore, most likely low-copy expression of transgene. Site of integration unknown. Moderate brood size. Shorter life span. Sensitive to oxidative stress.

Shortened lifespan.

N-terminally tagged GFP::CHE-12. Cilia are slightly shorter than WT. GFP fluorescence appears in multiple sensory cilia in the head and phasmid neuron cilia in the tail. Reference: Das A, et al. Mol Biol Cell. 2015 Nov 15;26(23):4248-64.

C-terminally tagged CHE-12::GFP. Cilia are slightly shorter than WT. GFP fluorescence appears in multiple sensory cilia in the head and phasmid neuron cilia in the tail. Reference: Das A, et al. Mol Biol Cell. 2015 Nov 15;26(23):4248-64.

Shortened excretory canal.

Formation of large round cysts in the excretory canal. The cysts begin to form shortly before hatching and is penetrant. The cysts grow in size throughout larval and adult stages, and can be lethal. The cysts form primarily at the cell body. Some of the larger cysts may be visible by low power microscopy. Slight variable defects in the tail whip. 100% penetrant.

Formation of large round cysts in the excretory canal. The cysts begin to form shortly before hatching and is penetrant. The cysts grow in size throughout larval and adult stages, and can be lethal. The cysts form primarily at the cell body. Some of the larger cysts may be visible by low power microscopy. Slight variable defects in the tail whip.

Excretory canal defect. Large fluid-filled cysts appear randomly along the excretory canal, especially at the tips: 100% penetrant. Cysts often visible as clear spots by low-power microscopy. Shortened canals. Smaller cysts in amphid sheath. Stop mutation in 2nd Ras-like IRGP domain. Encodes homologue of human IRGC. [NOTE (08/2025): The correct genotype of this strain is exc-1(rh26), not exc-3(rh26) as previously described.]

Excretory canal defect. Canals are shortened and animal is somewhat pale. Defect visible only by Nomarski microscopy. Tail spike is often malformed.

Homozygous viable, but poor growth and some mortality at lower osmolarity. Large fluid-filled cysts in excretory cell body and shortened canals, sometimes visible with dissecting microscope. Encodes intermediate filament protein. ifc-2 formerly known as exc-2. References: Buechner M, et al. Dev Biol. 1999 Oct 1;214(1):227-41. doi: 10.1006/dbio.1999.9398. PMID: 10491271.

Homozygous viable, but poor growth and some mortality at lower osmolarity. Large fluid-filled cysts in excretory cell body and shortened canals, sometimes visible with dissecting microscope. Encodes intermediate filament protein. ifc-2 formerly known as exc-2. References: Buechner M, et al. Dev Biol. 1999 Oct 1;214(1):227-41. doi: 10.1006/dbio.1999.9398. PMID: 10491271. Yang Z, et al. J Cell Biol. 2020 Nov 2;219(11):e202003152. doi: 10.1083/jcb.202003152. PMID: 32860501.

Formation of large round cysts in the excretory canal. The cysts begin to form shortly before hatching and is penetrant. The cysts grow in size throughout larval and adult stages, and can be lethal. The cysts form primarily at the canal tips. Some of the larger cysts may be visible by low power microscopy. Slight variable defects in the tail whip. Impenetrant distal tip cell migration defects (Mig).

Excretory canal defect. Hypomorphic allele. Canals are slightly shortened. Defect visible only by Nomarski microscopy.

Shortened locomotor healthspan. Reference: Kawamura K, & Maruyama IN. G3 (Bethesda). 2019 Aug 8;9(8):2415-2423.

Shortened locomotor healthspan. ix261 missense allele causes phenotype similar to that of deletion alleles. Reference: Kawamura K, & Maruyama IN. Aging (Albany NY). 2020 Dec 3;12(23):23525-23547.

otEx7353 [UPN::tagRFP::TRA-1(active) + rol-6(su1006)]. Rollers. Pick Rollers to maintain. Nervous system-specific expression of a TRA-1 gain-of-function construct. UPN is a concatenated panneuronal promoter (containing promoter fragments from unc-11, rgef-1, ehs-1, and ric-19). TRA-1(active) is a shortened version of the TRA-1A cDNA (860aa) predicted to encode the proteolytically activated version of TRA-1A generated by C-terminal cleavage in hermaphrodites (Schvarzstein and Spence 2006).

Presumed null allele nlp-45. ot1046 deletion causes a frameshift resulting in a shortened coding sequence that doesn't include mature neuropeptide. Reference: Sun H & Hobert O. Nature. 2021 Dec;600(7887):93-99. doi: 10.1038/s41586-021-04071-4. PMID: 34759317.

Presumed null allele nlp-45. ot1047 deletion causes a frameshift resulting in a shortened coding sequence that doesn't include mature neuropeptide. Reference: Sun H & Hobert O. Nature. 2021 Dec;600(7887):93-99. doi: 10.1038/s41586-021-04071-4. PMID: 34759317.

CRISPR/Cas9 engineered 1515 bp deletion of gmap-1; flanking sequences ACCTATCCAAAGCTT and TGCCAAGACATTGAA. Dessication sensitive. Shorter body length. Increased permeability of the cuticle. Reference: Ngale Njume F, et al. iScience. 2022 Oct 14;25(11):105357. doi: 10.1016/j.isci.2022.105357. PMID: 36339267.

Shorter body length. Reference: Bennett DF, et al. Aging Cell. 2023 Feb;22(2):e13774. doi: 10.1111/acel.13774. PMID: 36670049.

Transformation of ray 6 to a thin ray which is anteriorly displaced and fuses with ray 4 (95%). A 10th ray is found in about 50% of the sides scored. Body is slightly shorter. Do not distribute this strain; other labs should request it from the CGC.

YY63D3A.10. Homozygous. Outer Left Sequence: AGGTGGAAGGGATGGCTATT. Outer Right Sequence: GCTTCCTTGACTCTCCGTTG. Inner Left Sequence: GAAATTTGCACTCCAGGGAA. Inner Right Sequence: TAGTCTGGAAGGAGCGCTGT. Inner Primer PCR Length: 3267 bp. NOTE: External left primer occurs twice in Y63D3A, once at coordinate 1234 and once at coordinate 3721, giving external WT products of 3493 and 1006 bp respectively. Shorter product is apparently preferred in PCR. Reactions on mutant template using ok2243_external primers thus primarily gives a product from EL(3721) and ER. Nested amplification on this product using ok2243_internal primers appears to give a product from EL(3721) (remaining primer from the external round passed to internal round by product transfer) and IR. Deletion Size: 219 bp. Deletion left flank: CCACTTCAGTCTTGATGCTGCGCTCGTGCC. Deletion right flank: TGTCACTAGCTCTATATTCAAGTCTCCTCG. Insertion Sequence: TTTTGTTCT. Attribution: This strain was provided by the C. elegans Reverse Genetics Core Facility at the University of British Columbia, which is part of the international C. elegans Gene Knockout Consortium, which should be acknowledged in any publications resulting from its use. Paper_evidence WBPaper00041807

WT phenotype. Segregates Uncs which are Osm. [Osm phenotype checked 2/94.] mnDp3[sup-10(mn338)] and mnDp13 are the same. mnDp13 was derived from mnDp3 as lacking sup-10(+). It is not known if mnDp3 picked up a mutation in sup-10 or if the end of mnDp3 was shortened.

Starved appearance: shorter body length, pale intestine, reduced pharyngeal pumping, smaller brood size and extended egg-laing period.

Mean lifespan 12.3 days. Carries Ts of BergBO. Carries Daf+ of N2. Males fertile. One of the shortest lived strains. No fertility at 25C.

Shorter lifespan than wild-type worms at 15-20 C, but not at 25 C. Reference: Xiao R, et al. Cell. 2013 Feb 14;152(4):806-17.

Variably abnormal. Severe developmental defects. Partially lethal (approx. 2/3 fail to survive). Adult hermaphrodites have variably enlarged and shortened tails and the body cuticle is twisted. Severe egg-laying defect; some animals have a protruding vulva. Tab. Unc. Lack AVM, PVM, and PLM. ALM often fail to migrate or migrate a shorter distance.

tmIs905 [dat-1p::alpha-synuclein(A30P) + ges-1p::DsRed] II. egIs1 [dat-1p::GFP]; reportedly maps to LG IV. hrpr-1 also known as hrp-2. yyz8 is a weak loss-of-function allele. Neurodegeneration in ADE neurons. Neurites are shorter in PDE neurons.

Heterozygotes are slightly shorter than WT and segregate more animals which are slightly shorter than WT, Rollers which are Egl and have a protruding vulva, and DpyUncs.

Heterozygotes are slightly shorter than WT and segregate DpyUnc and Egl.

B0228.5 Homozygous. Exhibits slightly shortened lifespan compared to wild-type. Outer Left Sequence: cgccgtggttaacctcttta. Outer Right Sequence: ttatcggacaataggcggac. Inner Left Sequence: ctgttgactcccaacaccct. Inner Right Sequence: ttgcaaaagaaattttcgcc. Inner Primer PCR Length: 2357. Estimated Deletion Size: about 850 bp. This strain was provided by the C. elegans Gene Knockout Project at OMRF, which is part of the International C. elegans Gene Knockout Consortium, which should be acknowledged in any publications resulting from its use. http://www.mutantfactory.ouhsc.edu/ Reference: Miranda-Vizuete A, et al. FEBS Lett. 2006 Jan 23;580(2):484-90.

yp2 mutation perturbs the MRT-1 DNA-binding domain. Mortal germline. Progressive telomere shortening due to telomerase dysfunction. Hypersensitive to DNA interstrand crosslinking agents. This strain will become sterile after propagating 10-20 generations. mrt-1 mutants can be rejuvenated by outcrossing. Reference: Meier B, et al. EMBO J. 2009 Nov 18;28(22):3549-63.

Null allele. Mortal germline. Progressive telomere shortening due to telomerase dysfunction. Hypersensitive to DNA interstrand crosslinking agents. This strain will become sterile after propagating 10-20 generations. mrt-1 mutants can be rejuvenated by outcrossing. Reference: Meier B, et al. EMBO J. 2009 Nov 18;28(22):3549-63.

Null allele. Mortal germline. Progressive telomere shortening due to telomerase dysfunction. Hypersensitive to DNA interstrand crosslinking agents. This strain will become sterile after propagating 10-20 generations. mrt-1 mutants can be rejuvenated by outcrossing. Reference: Meier B, et al. EMBO J. 2009 Nov 18;28(22):3549-63. [NOTE: allele is incorrectly described as e2661 in this publication.]