Laboratory Information

NameMCJ View on WormBase
Allele designationcdb
HeadKatherine McJunkin
InstitutionNIDDK, NIH, Bethesda, MD
Address NIDDK, NIH
Building 50 Room 3148
50 South Drive
Bethesda 20892
United States
Website https://www.niddk.nih.gov/about-niddk/staff-directory/intramural/katherine-mcjunkin/Pages/research-summary.aspx
Gene classes

Strains contributed by this laboratory

Strain Genotype Species Description
MCJ11 mir-35(cdb2 cdb4) II. C. elegans Superficially wild-type. Seed mutation of mir-35 was made by two rounds of CRISPR/Cas9 editing. cdb2 is a 50 bp deletion of the mir-35 locus. cdb4 was created by successive homology-directed repair of the disrupted mir-35 locus with a protospacer to preserve the secondary structure of the primary and precursor hairpin. Reference: Yang B, et al. Genes Dev. 2020 Sep 1;34(17-18):1227-1238. PMID: 32820039
MCJ13 mir-35(cdb2 cdb6) II. C. elegans The seed region of the mature mir-35 is replaced with random nucleotides in mir-35(cdb2 cdb6). This mutant mir-35 has little impact on embryonic mir-35 abundance but strongly inhibits its decay at embryo to L1. Superficially wild-type. Reference: Donnelly BF, et al. (2022). Cell Reports.
MCJ180 mir-35(cdb2 cdb72) II. C elegans cdb2 cdb72 is a mutation to the 3' end of the mature mir-35 creating a 3’ end containing nucleotides that are not present or rare among all mir-35 family members at a given position, while preserving overall GC content. This mir-35 mutant strongly impacts embryonic abundance of mir-35 but does not affect its decay at embryo to L1. Superficially wild-type. Reference: Donnelly BF, et al. (2022). Cell Reports.
MCJ191 mir-35(cdb2 cdb78) II. C elegans cdb2 cdb78 is a mutation to the 3' end of the mature mir-35 creating a mutant with mir-35 seed sequence and mir-82 3’ end. This mir-35 mutant strongly impacts embryonic abundance of mir-35 but does not affect its decay at embryo to L1. Superficially wild-type. Reference: Donnelly BF, et al. (2022). Cell Reports.
MCJ211 mir-35(cdb2 cdb95) II. C elegans cdb2 cdb95 is a mutation to the seed region of the mature mir-35, reversing the seed sequence and altering the pri-miRNA structure. This mutant mir-35 has little impact on embryonic mir-35 abundance but strongly inhibits its decay at embryo to L1. Superficially wild-type. Reference: Donnelly BF, et al. (2022). The developmentally-timed decay of an essential microRNA family is seed sequence-dependent. BioRxiv 2021.11.19.469346.
MCJ213 egl-1(cdb97) V. C. elegans Brood size slightly reduced at 25 degrees. egl-1(cdb97) contains engineered mutations in mir-35 binding site in the 3’UTR region making the sequence complementary to the mir-35(cdb4) variant. Reference: Yang B, et al. Genes Dev. 2020 Sep 1;34(17-18):1227-1238. PMID: 32820039
MCJ217 mir-35(cdb2 cdb4) II; egl-1(cdb97) V. C. elegans Superficially wild type. Seed mutation of mir-35 was made by two rounds of CRISPR/Cas9 editing. cdb2 is a 50 bp deletion of the mir-35 locus. cdb4 was created by successive homology-directed repair of the disrupted mir-35 locus with a protospacer to preserve the secondary structure of the primary and precursor hairpin. egl-1(cdb97) contains engineered mutations in mir-35 binding site in the 3’UTR region making the sequence complementary to the mir-35(cdb4) variant. Reference: Yang B, et al. Genes Dev. 2020 Sep 1;34(17-18):1227-1238. PMID: 32820039
MCJ219 sup-26(cdb99) nhl-2(cdb100) III; egl-1(cdb97) V. C elegans nhl-2(cdb100) contains engineered mutations in the mir-35 binding site in the nhl-2 3’UTR region making the sequence complementary to the mir-35(cdb4) variant. egl-1(cdb97) contains engineered mutations in mir-35 binding site in the egl-1 3’UTR region making the sequence complementary to the mir-35(cdb4) variant. Slightly reduced brood size at 25C. Reference: Donnelly BF, et al. (2022). Cell Reports.
MCJ259 cex-2(cdb130) mir-35(cdb2 cdb4) II; T28D6.4(cdb133) unc-49(cdb134) IV; egl-1(cdb97) V. C. elegans Superficially wild-type. egl-1(cdb97) contains engineered mutations in mir-35 binding site in the 3’UTR region making the sequence complementary to the mir-35(cdb4) variant. Reference: Yang B, et al. Genes Dev. 2020 Sep 1;34(17-18):1227-1238. PMID: 32820039
MCJ317 gldr-2(cdb187) I. C. elegans Superficially wild-type. Reference: Vieux K-F, et al. Nucleic Acids Res. 2021. doi:10.1093/nar/gkab840 PMID: 34586415
VT3042 nDf50 II; her-1(n695) V; nEx1187. C. elegans nEx1187 [mir-35 mir-45(genomic) + sur-5::GFP]. Pick GFP+ to maintain. Segregates GFP+ Egl animals carrying nEx1187 (mir-35 rescuing array) and GFP- animals that develop as XX pseudomales. Reference: McJunkin K, Ambros V. Genes Dev. 2017 Feb 15;31(4):422-437.
VT3077 nDf50/mIn1 [mIs14 dpy-10(e128)] II; sup-26(n1091) III; her-1(n695) V. C. elegans Pick wild-type GFP+ to maintain. Heterozygotes are WT with GFP+ pharynx, and segregate Dpy GFP+ mIn1 homozygotes, and GFP- low viability non-Egl hermaphrodites. Viability of first generation nDf50 homozygotes (GFP-) segregated from balanced heterozygotes is rescued by maternal contribution of mir-35-41 from balancer. Second generation GFP- animals are low viability. Reference: McJunkin K, Ambros V. Genes Dev. 2017 Feb 15;31(4):422-437.
VT3081 nDf50/mIn1 [mIs14 dpy-10(e128)] II; sup-26(gk426) III; her-1(n695) V. C. elegans Pick wild-type GFP+ to maintain. Heterozygotes are WT with GFP+ pharynx, and segregate Dpy GFP+ mIn1 homozygotes, and GFP- low viability non-Egl hermaphrodites. Viability of first generation nDf50 homozygotes (GFP-) segregated from balanced heterozygotes is rescued by maternal contribution of mir-35-41 from balancer. Second generation GFP- animals are low viability. Reference: McJunkin K, Ambros V. Genes Dev. 2017 Feb 15;31(4):422-437.
VT3121 sup-26(ma265 [sup-26::3xFLAG]) III. C. elegans Endogenous sup-26 locus tagged with 3xFLAG. Reference: McJunkin K & Ambros V. Genes Dev. 2017 Feb 15;31(4):422-437. PMID: 28279983
VT3363 nDf50/mIn1 [mIs14 dpy-10(e128)] II; nhl-2(ok818) III; her-1(n695) V. C. elegans Pick wild-type GFP+ to maintain. Heterozygotes are WT with GFP+ pharynx, and segregate Dpy GFP+ mIn1 homozygotes, and GFP- low viability non-Egl hermaphrodites. Viability of first generation nDf50 homozygotes (GFP-) segregated from balanced heterozygotes is rescued by maternal contribution of mir-35-41 from balancer. Second generation GFP- animals are low viability. Reference: McJunkin K, Ambros V. Genes Dev. 2017 Feb 15;31(4):422-437.
VT3554 nhl-2(ma371[gfp::3xFLAG::nhl-2]) III. C. elegans Endogenous nhl-2 locus tagged at the N-terminus with GFP and 3xFLAG. Reference: McJunkin K & Ambros V. Genes Dev. 2017 Feb 15;31(4):422-437. PMID: 28279983
This laboratory hasn't submitted any alleles to the CGC.