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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Iglc1+
wild type
MGI:2432591
Summary 3 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Iglc1tm2Ust/Iglc1+ involves: 129S7/SvEvBrd * C57BL/6J MGI:4818912
cx2
Igktm1Dhu/Igktm1Dhu
Iglc1tm1Ust/Iglc1+
involves: 129S7/SvEvBrd * C57BL/6 MGI:3719658
cx3
Igktm1Dhu/Igktm1Dhu
Iglc1tm1.1Ust/Iglc1+
involves: 129S7/SvEvBrd * C57BL/6 * FVB/N MGI:3719657


Genotype
MGI:4818912
ht1
Allelic
Composition
Iglc1tm2Ust/Iglc1+
Genetic
Background
involves: 129S7/SvEvBrd * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Iglc1tm2Ust mutation (0 available); any Iglc1 mutation (4 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
• VJ lamda 1 rearrangement is enhanced, however most of the rearrangements are nonproductive
• frequency of productive lamda 1 rearrangements is reduced about 10-fold

immune system
• VJ lamda 1 rearrangement is enhanced, however most of the rearrangements are nonproductive
• frequency of productive lamda 1 rearrangements is reduced about 10-fold




Genotype
MGI:3719658
cx2
Allelic
Composition
Igktm1Dhu/Igktm1Dhu
Iglc1tm1Ust/Iglc1+
Genetic
Background
involves: 129S7/SvEvBrd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Igktm1Dhu mutation (2 available); any Igk mutation (33 available)
Iglc1tm1Ust mutation (0 available); any Iglc1 mutation (4 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• VJ (variable/joint)recombination is increased 2-fold relative to wild-type levels in the spleen
• the number of lambda1 B cells is increased relative to wild-type mice in the bone marrow and spleen

hematopoietic system
• VJ (variable/joint)recombination is increased 2-fold relative to wild-type levels in the spleen
• the number of lambda1 B cells is increased relative to wild-type mice in the bone marrow and spleen




Genotype
MGI:3719657
cx3
Allelic
Composition
Igktm1Dhu/Igktm1Dhu
Iglc1tm1.1Ust/Iglc1+
Genetic
Background
involves: 129S7/SvEvBrd * C57BL/6 * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Igktm1Dhu mutation (2 available); any Igk mutation (33 available)
Iglc1tm1.1Ust mutation (0 available); any Iglc1 mutation (4 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• lambda1 B cells numbers are reduced to 38.8% from 63.6% in Igl-C1tm1Ust/ Igl-C1+ Igktm1Dhu/ Igktm1Dhu mice

hematopoietic system
• lambda1 B cells numbers are reduced to 38.8% from 63.6% in Igl-C1tm1Ust/ Igl-C1+ Igktm1Dhu/ Igktm1Dhu mice





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last database update
01/06/2026
MGI 6.24
The Jackson Laboratory