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Ightm1Leck
Targeted Allele Detail
Summary
Symbol: Ightm1Leck
Name: immunoglobulin heavy chain complex; targeted mutation 1, Laurel A Eckhardt
MGI ID: MGI:3830835
Synonyms: VHdelta, VHdeltaa
Gene: Igh  Location: Chr12:113222388-115973574 bp, - strand  Genetic Position: Chr12, Syntenic
Mutation
origin
Germline Transmission:  Earliest citation of germline transmission: J:144033
Parent Cell Line:  E14.1 (ES Cell)
Strain of Origin:  129P2/OlaHsd
Mutation
description
Allele Type:    Targeted (Inserted expressed sequence, Modified regulatory region, Null/knockout)
Mutations:    Insertion, Intragenic deletion
 
Mutation detailsA 3.7-kb region (including the most proximal D-heavy gene segment, DQ52, all the J-heavy gene segments, and the Emu enhancer element (Rr150)) was replaced with a loxP-flanked neomycin resistance gene cassette and a fully assembled V-heavy gene segment. The V-heavy gene segment and about 2 kb of upstream sequence were isolated from the B1-8 hybridoma, which produces a 4-hydroxy-3-nitrophenyl acetyl-binding antibody. Founder mice were crossed with EIIA-cre transgenic mice to remove the neomycin cassette from the germline. Correct targeting was confirmed by Southern blot and genomic PCR. Homozygous mice had B cells expressing the knocked in immunoglobulin heavy chain. (J:144033)
Generation of the Ightm1Leck allele
Phenotypes
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View phenotypes and curated references for all genotypes (concatenated display).
Find Mice (IMSR)
Mouse strains and cell lines available from the International Mouse Strain Resource (IMSR)
Carrying this Mutation:  Mouse Strains: 0 strains available      Cell Lines: 0 lines available
Carrying any Igh Mutation:  44 strains or lines available
References
Original:  J:144033 Li F, et al., A role for the IgH intronic enhancer E mu in enforcing allelic exclusion. J Exp Med. 2009 Jan 16;206(1):153-67
All:  3 reference(s)

Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
10/29/2024
MGI 6.24
The Jackson Laboratory