Search Strains

Homozygous sterile deletion chromosome 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 tm4014 homozygotes (sterile). Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. The tm4014 allele was provided by the National BioResource Project (NBRP, for C. elegans).

No visible phenotype except for reduced brood size. Synthetic sterile with nos-2(RNAi). 1176 bp deletion starting at aa 58 in nos-1 ORF and ending 414 bp past the end of the nos-1 ORF.

Heterozygotes are WT and segregate WT, DpyUncs and dead eggs. The nos-2(ok230) allele is due to deletion of bases 30999 to 33076 of cosmid ZK1127 (GenBank accession U58758) and also deletes a portion of the him-14 gene (him-14 is in an intron of nos-2).

Heterozygotes are WT and segregate WT, Uncs which give only dead eggs, and dead eggs. mbk-2(pk1427) is a deletion that removes most of the mbk-2 locus.

qIs26 [lag-2::GFP + rol-6(su1006)]. ok467 deletion balanced by glp-1- and dpy-19-marked recombination suppressor. qIs26 was integrated into qC1 and in the process made qC1 homozygous lethal. Heterozygotes are Rollers and GFP+ in the distal tip cell, and segregate WT Rol, lethal qC1 homozygotes, and npp-10 homozygotes (Emb or early Larval lethal). Pick WT GFP+ Rol and check for correct segregation of progeny to maintain.

Deletion of the operon CEOP 5400, removing both swan-1 and swan-2 (V: 13801593-13807217) and insertion of ATTTGTTCAGACAATAAGCTNGAAATC. No reported phenotype. Reference: Paix A, et al. Genetics. 2014 Sep 23.

Deletion of the operon CEOP 5400, removing both swan-1 and swan-2 (V: 13801629-13807223). No reported phenotype. Reference: Paix A, et al. Genetics. 2014 Sep 23.

Deletion/insertion (AGCTAGC) of a STOP codon/frameshift near the ATG between IV: 10128909...10128934. Reference: Paix A, et al. Genetics. 2014 Sep 23.

1.6kb deletion in gtbp-1 between IV: 10127256...10128923. Homozygous viable. Reference: Paix A, et al. Genetics. 2014 Sep 23.

1.6kb deletion in gtbp-1 between IV: 10127264...10128913 and insertion of NheI restriction site (GCTAGC). Homozygous viable. Reference: Paix A, et al. Genetics. 2014 Sep 23.

Deletion removing 733 base pairs upstream of start and the first 2565 bases of the endogenous meg-4 locus. Reference: Wang JT, et al. eLife 2014;3:e04591.

Description: 20% maternal effect sterility on average, RNAi insensitivity, MEG-3 does not form cytoplasmic gradient. meg-3(ax4503) is an in-frame deletion in the endogenous meg-3 locus removing amino acids (1-544); MEG-3 does not form a cytoplasmic gradient but does still form granules in early embryos and co-localizes with PGL-3. References: Smith, J. et al. Elife. 2016 Dec 3;5:e21337. doi: 10.7554/eLife.21337. PMID: 27914198 Schmidt H, bioRxiv 2020.10.15.340570 (2020) doi:10.1101/2020.10.15.340570.

ax4523 is a deletion residues 24-1387 of the npp-14 coding region. Reference: Thomas et al. 2022. Cytoplasmic nucleoporin foci are stress-sensitive, non-essential condensates in C. elegans

ax4587 is a CRISPR-engineered deletion removing the FGG repeats of GLH-1. Reference: Thomas, Bodas, and Seydoux (2025). "FG repeats drive co-clustering of nuclear pores and P granules in the C. elegans germline."

Medium Dpy. Robert Barstead deletion mutant in T28D6. Prolyl-4-hydroxylase alpha subunit. Do not distribute this strain; other labs should request it from the CGC.

WT. Deletion mutant in F35G2.4. Prolyl 4 hydroxylase #2 deletion. Do not distribute this strain; other labs should request it from the CGC.

Low percent sterile, more sperm than WT, delayed oogenesis, larger broods than WT. PCR amplify: WT band is about 3 kb, deletion band is about 1.2 kb. Oligos used: outer: 201A and 202S; inner: 203A and 204S. Do not distribute this strain; other labs should request it from the CGC.

T05C12.6, T05C12.7. Heterozygotes are WT and GFP+ in the pharynx. mIn1[mIs14 dpy-10(e128)] homozygotes are Dpy and GFP+ in the pharynx. Homozygous mig-5&cct-1(ok280) worms arrest at about L2/L3. Strong loss of function for cct-1 and weak for mig-5. mig-5 is a dishelved homologue. External left primer: CGGCCTAAACGTTGATTGTT. External right primer: CAGAGTGAGTCGTGAACCGA. Internal left primer: TAATCCTGAATCCGGACGAG. Internal right primer: TACGAGATTTCGGTCCCTTG. Internal WT amplicon: 3284 bp. Deletion size: 987 bp. Deletion left flank: GCTGCAGTCTGATGTGCATGGCGGCTCCAT. Deletion right flank: TTGGTGTTGTCTATGCTTCAAGAAAATTGA. Do not distribute this strain; other labs should request it from the CGC.

B0273.2. External left primer: AAGCATACAGGCGCAGAGAT. External right primer: TACCGTATTGTGGTGCGAAA. Internal left primer: AACGGTTGCTCATCTGACTT. Internal right primer: AAAATTGCGTCGATTTTTGG. Internal WT amplicon: 2701 bp. Deletion size: 1751 bp. Deletion left flank: TTAAAACTTCTAATTTAAATAAAAAATATA. Deletion right flank: TATGTCGTTCAGCAAATGATTTCGATTTGC. Do not distribute this strain; other labs should request it from the CGC.

Heterozygotes are WT, but frequently sterile when balanced by hT2[qIs48]. q736 is homozygous embryonic lethal. (Approx. 5% of hets are Sterile when balanced by WT.) hT2[qIs48] homozygotes are inviable. q736 is a deletion of sys-1 deleting from nucleotide 1803 to nucleotide 3992 of the genomic sequence (A of start ATG is position 1). Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype. Do not distribute this strain; other labs should request it from the CGC.

Slow growing and throw about 10% dead embryos. q783 is a deletion of the first 4 exons on the larp-1 gene. NOTE: this strain is carrying mut-16(mg461) in the background; It is unknown if mg461 is homozygous in this strain. See JK4545 for a replacement larp-1(q783) strain. mut-16 can be detected using primer1 CCCGCCGATACAGAAACTAA, primer 2 AATATTCGATCGGCAAGCAG for genotyping. The wild-type locus will yield a 824bp PCR product, whereas mg461 will yield a 373bp product. Do not distribute this strain; other labs should request it directly from the CGC.

Derived by outcrossing JK3826 to remove mut-16 deletion. Do not distribute this strain; other labs should request it directly from the CGC.

Homozygous lethal deletion chromosome 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 sterile homozygotes. Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Kershner AM, et al. Proc Natl Acad Sci U S A. 2014 Mar 11;111(10):3739-44.

Homozygous lethal deletion chromosome 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 sterile homozygotes. Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Austin J & Kimble J. Cell. 1987 Nov 20;51(4):589-99.

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.

Homozygous sterile deletion chromosome 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 q172 homozygotes (sterile). Homozygous hT2[bli-4 let-? qIs48] inviable. Pick WT GFP and check for correct segregation of progeny to maintain. Reference: Crittenden SL, et al. Development. 1994 Oct;120(10):2901-11. doi: 10.1242/dev.120.10.2901. PMID: 7607080.

hets are green pharynx WT and segregate green pharynx WT, fertile non-green pharynx and dead eggs (nT1 homozygotes). q833 is a 472 bp deletion into the intergenic region between mir-61/ mir-250 and F55A11.4.

350 bp deletion in F17E5.2

CRIPSR-engineered mutation of the lst-1M71 longform start codon (ATG to AT, deletion of G). Reference: Haupt KA, et al. Development. 2019 Oct 17;146(20):dev181644. doi: 10.1242/dev.181644. PMID: 31515205

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.

GGSGG linker::3xV5 epitope tag inserted into C-teminus of endogenous lst-1 locus with a deletion removing a portion of the lst-1 locus. q1115 retains the N-terminal 1-210) region of LST-1. Reference: Haupt KA, et al. 2019 Oct 17;146(20):dev181644. PMID: 31515205.

3xV5 epitope tag inserted into endogenous lst-1 locus with a 1 bp deletion in lst-1L-specific first exon tospecifically disrupt LST-1L isoform. Synthetically sterile in combination with sygl-1(lf). Reference: Haupt KA, et al. 2019 Oct 17;146(20):dev181644. PMID: 31515205.

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.

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.

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

No obvious phenotype. Chromosomal deletion beginning from -42 bp to +1196 bps relative to elt-4 ATG (+20bp insert).

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.

1953 bp deletion. Salt chemotaxis learning defective. Reference: Proc Natl Acad Sci U S A. 2011 May 3;108(18):7589-94.

No apparent phenotype. tm748 is a UV/TMP-induced gap-2 deletion allele generated by National Bioresource Project (see http://shigen.lab.nig.ac.jp/c.elegans/index.jsp?lang=englis h for info).

Heterozygotes are WT and segregate sterile iff-1 homozygotes and Dumpy sterile qC1 homozygotes. Maintain by picking non-Dpy fertile heterozygotes. tm483 is a UV/TMP-induced iff-1 deletion allele generated by K. Gengyo-Ando and S. Mitani.

Segregates GFP+ glowing heterozygotes and non-glowing sterile iff-1 homozygotes. tm483 is a UV/TMP-induced iff-1 deletion allele generated by K. Gengyo-Ando and S. Mitani. hT2[qIs48] homozygotes inviable. 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. Note: qIs48 has been observed to recombine off hT2, typically leaving behind a functional homozygous viable hT2 with Bli-4 phenotype.

Chemotaxis abnormality, developmental delay, small brood size.  pe420 is a 22 bp deletion in exon 1.

daf-2(pe2722) is a daf-2c-isoform specific mutation. pe2722 is a CRISPR/Cas9-engineered 41 bp deletion (ggttgatgacgatgatgagcccggcggcaggaggcagtgagcaaca) in daf-2 exon 11.5. Guide RNA sequence: gacgatgaagagcccggcgg. Reference: Nagashima T, et al. PLoS Genet. 2019 Jul 19;15(7):e1008297. PMID: 31323047

Deletion flanking sequence (X: 764793) AGTCAACTACTAAAAAACGT-TTTTTTT-TTTTTTCAAATTCTAGAATAAGTT (X:765504). 667 BP DELETION. 7 T insertion.

Dyf. Osm. Reduced mating efficiency (ME 2-3). Deletion extends over 1610 bp in the intron between exons 3 and 4 and ending 30 bp after the STOP codon (cosmid F02D8 pb 25954-27563 are deleted). Complements dyf-4(m158).

243 bp internal deletion.

MT15982 mir-67(n4899) was outcrossed 6x to produce this strain. Deletion breakpoints are:GGGTGCCTAATGCAAA / AGTACACATTTATGAAT...GCGAGTTTAAAGCAACG / AGTAGCAGAAGGACCA.Do not distribute this strain; other labs should request it 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.

MT15501 mir-83(n4638) was outcrossed 6x to produce this strain. Deletion breakpoints are:GTTGAGAATTCCTGTTGCAAT / TAAAACTGAAATTTCGATCTA...TTTTTAGAATTGAGAGCA / ACGAAAGAACAAAATAAGAGA.Do not distribute this strain; other labs should request it 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.

Deletion alleles. Can be maintained at 20C. Sterile at 26C. Can use PCR with the following primer to determine whether both deletions are present. (5'end)5'GGTCTACCAGAGTTTGTGCGCAATC3' (3'end)5'GATAGCCTTGCACTTCGTTG3'. PCR products from wild type show two bands; kgb-1 gene shows a smaller band; kgb-2 gene shows a bigger band.The double mutant should have no PCR product. [NOTE: The 5' primer sequence was corrected 03/28/12 (K. Bennett)]