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Phenotypes Associated with This Genotype
Genotype
MGI:5318221
Allelic
Composition
Chsy1tm1Lex/Chsy1tm1Lex
Genetic
Background
involves: 129S5/SvEvBrd * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Chsy1tm1Lex mutation (4 available); any Chsy1 mutation (37 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• short at E18.5 but grossly normal in adults
• menisci in the knees fail to mineralize and appear torn and misshapen in adults
• abnormal joint between hamate and triquetrum due to possible bifurcation events
• abnormal joint between trapezium and scaphoid, bones are not well separated
• digit bifurcation at E18.5
• chondroplasia
• misshapen phalanges
• fusion of metacarpals with one of the bifurcated phalanges
• defects similar to forelimbs
• area of columnar proliferation is somewhat disorganized
• indistinct head and jaw elements at E13.5
• ribs fail to extend as far ventrally as in controls at E13.5
• at E13.5
• reduced bone density and compromised bone architecture
• decreased overall bone density in both fore- and hind paws of adults
• decreased bone mineral density in vertebrae
• decreased total body bone mineral content
• decreased bone mineral density in femur
• decreased total body volumetric bone mineral density
• delayed chondrocyte differentiation and maturation at E14.5
• delay in chondrocyte development less severe perinatally
• impaired chondrogenesis by E13.5
• hypoplastic skeletal elements
• mild chondroplasia at E18.5
• mineralization of metacarpals and forelimbs is delayed at E18.5

nervous system
• observed in the retina

limbs/digits/tail
• stubby paws and digits in adults
• short at E18.5 but grossly normal in adults
• menisci in the knees fail to mineralize and appear torn and misshapen in adults
• abnormal joint between hamate and triquetrum due to possible bifurcation events
• abnormal joint between trapezium and scaphoid, bones are not well separated
• digit bifurcation at E18.5
• chondroplasia
• misshapen phalanges
• fusion of metacarpals with one of the bifurcated phalanges
• defects similar to forelimbs

craniofacial
• indistinct head and jaw elements at E13.5

behavior/neurological
• impaired motor strength

hematopoietic system
• observed in the retina

immune system
• observed in the retina

vision/eye
• increased ectopically localized synapses in the retina

cellular
• observed in the retina


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
03/25/2025
MGI 6.24
The Jackson Laboratory