Search Strains

mNG::OMA-2 endogenously tagged using Cas9-triggered homologous recombination. Reference: Dickinson DJ, et al. Dev Cell. 2017 Aug 21;42(4):416-434.e11. (PMID 28829947).

Heterozygotes are Unc and segregate Unc and non-Unc steriles (oma-1; oma-2 homozygotes). The Oma animal has an empty uterus and lots of oocytes in the gonad arms. Maintain by picking Uncs. zu405 is a gain-of-function mutation which results in temperature sensitive, embryonic lethality. Loss-of-function mutation in either oma-1 or oma-2 alone does not have a detectable phenotype. te33 is a dominant suppressor of the zu405 embryonic lethality. te51 is a mutation that, in the oma-1(zu405te33) background, gives an Oma (Ooctye Maturation defective) phenotype. [NOTE (09/2016; D. Greenstein, unpublished results): The two molecular changes in te33 are different than reported by Detwiler et al. (2001), but nonetheless result in a strong loss of oma-1 function. Sequencing of the original isolate of te33 gave the same result (S. Robertson and R. Lin, unpublished results).] This strain carrying oma-1(zu405te33) contains the following mutations: zu405 [C8889984T; P240L] and te33 [C8889978A, S238stop & C8889863T, H200Y].

knu1284 is a CRISPR-engineered in-frame deletion of the TZF domain of oma-1. AID* degron tag (IAA17) inserted into the endogenous oma-2 locus. When OMA-2 is present, this mutant does not appear to have obvious phenotypes. Auxin-inducible depletion of OMA-2 causes a null phenotype: animals do not produce mature embryos and have an empty uterus. Reference: Ertekin A, et al. bioRxiv. 2025 May 12:2025.05.09.653132. doi: 10.1101/2025.05.09.653132. PMiD: 40463014.

wgIs588 [oma-2::TY1::EGFP::3xFLAG + unc-119(+)]. TY1::EGFP::3xFLAG tag inserted in frame at C-terminus of coding sequence by recombineering. Expression of transgene confirmed by GFP. References: Sarov M, et al. Nat Methods (2006) 10:839-44. Zhong, M, et al. PLoS Genet (2010) 6(2):e1000848. Strain was constructed as part of the Regulatory Element Project, part of modENCODE (http://www.modencode.org).

neSi101 [sun-1p::TIR1::mRuby::eft-3 3'UTR + Cbr-unc-119(+)] IV. GFP reporter inserted into C-terminus of endogenous oma-1 locus. AID* degron tag (IAA17) inserted into the endogenous oma-2 locus. Reference: Ertekin A, et al. bioRxiv. 2025 May 12:2025.05.09.653132. doi: 10.1101/2025.05.09.653132. PMiD: 40463014.

neSi101 [sun-1p::TIR1::mRuby::eft-3 3'UTR + Cbr-unc-119(+)] IV. GFP reporter inserted into C-terminus of endogenous oma-1 locus. A triple arginine motif upstream of the oma-1 tandem zinc finger domain is mutated to three alanines. AID* degron tag (IAA17) inserted into the endogenous oma-2 locus. When OMA-2 is present, this mutant does not appear to have obvious phenotypes. Auxin-inducible depletion of OMA-2 causes embryonic lethality: animals lay low numbers of nonviable embryos that are often polynucleated and have weak chitin shells. Reference: Ertekin A, et al. bioRxiv. 2025 May 12:2025.05.09.653132. doi: 10.1101/2025.05.09.653132. PMiD: 40463014.