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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Oca2p-J
pink-eyed dilution Jackson
MGI:1856127
Summary 3 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Oca2p-J/Oca2p-J C3H/HeJ-Oca2p-J/J MGI:3581189
cx2
a/a
Oca2p-J/Oca2p-J
involves: C3H/HeJ MGI:4454423
cx3
a/a
Lystbg/Lystbg
Oca2p-J/Oca2p-J
involves: C3H/HeJ * C3H/Rl * C57BL/6J MGI:4454430


Genotype
MGI:3581189
hm1
Allelic
Composition
Oca2p-J/Oca2p-J
Genetic
Background
C3H/HeJ-Oca2p-J/J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Oca2p-J mutation (4 available); any Oca2 mutation (70 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Diluted coat color and pink eyes of Oca2p-J/Oca2p-J mice (lower) compared to the Oca2p-J/+ mouse (upper)

pigmentation
• non-agouti mice are grey
• agouti mice are yellow with slate grey hair bases
• the eyes are "pink"

vision/eye
• the eyes are "pink"

integument
• non-agouti mice are grey
• agouti mice are yellow with slate grey hair bases




Genotype
MGI:4454423
cx2
Allelic
Composition
a/a
Oca2p-J/Oca2p-J
Genetic
Background
involves: C3H/HeJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
a mutation (229 available); any a mutation (463 available)
Oca2p-J mutation (4 available); any Oca2 mutation (70 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
pigmentation
• reorganization of fibrillar melanosomes into particulate melanin granules, such that only 20% of melanosomes in adult retina are fibrillar in nature, the rest are particulate
• 2% of premelanosomes in the choroid are fused to form giant granules
• premature termination of melanization of the premelanosome filaments in the retina

vision/eye
• 2% of premelanosomes in the choroid are fused to form giant granules




Genotype
MGI:4454430
cx3
Allelic
Composition
a/a
Lystbg/Lystbg
Oca2p-J/Oca2p-J
Genetic
Background
involves: C3H/HeJ * C3H/Rl * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
a mutation (229 available); any a mutation (463 available)
Lystbg mutation (6 available); any Lyst mutation (225 available)
Oca2p-J mutation (4 available); any Oca2 mutation (70 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
pigmentation
• reorganization of fibrillar melanosomes into particulate melanin granules, such that only 35% of melanosomes in adult retina are fibrillar in nature, the rest are particulate
• 2% of premelanosomes in the choroid are fused to form giant granules

vision/eye
• 2% of premelanosomes in the choroid are fused to form giant granules





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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
11/12/2024
MGI 6.24
The Jackson Laboratory