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Avy
Spontaneous Allele Detail
Summary
Symbol: Avy
Name: nonagouti; agouti viable yellow
MGI ID: MGI:1855930
Gene: a  Location: Chr2:154792519-154892932 bp, + strand  Genetic Position: Chr2, 76.83 cM
Alliance: Avy page
Spectrum of coat colors in Avy/a mice

Show the 1 phenotype image(s) involving this allele.

Mutation
origin
Strain of Origin:  C3H/HeJ
Mutation
description
Allele Type:    Spontaneous
Mutation:    Transposon insertion
 
Mutation detailsAn intracisternal A particle (IAP) retrotransposon is inserted 100kb upstream of agouti coding sequences causing ectopic, allele-specific imprinting of agouti protein expression. (J:19977, J:21244, J:79708)
Inheritance:    Dominant
Phenotypes
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View phenotypes and curated references for all genotypes (concatenated display).
Disease models
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Expression
In Mice Carrying this Mutation: 1 RNA-Seq or microarray experiment(s)
In Structures Affected by this Mutation: 1 anatomical structure(s)
Tumor Data
List all tumor models in MMHCdb carrying Avy
Find Mice (IMSR)
Mouse strains and cell lines available from the International Mouse Strain Resource (IMSR)
Carrying this Mutation:  Mouse Strains: 4 strains available      Cell Lines: 0 lines available
Carrying any a Mutation:  463 strains or lines available
Notes
The Avy allele arose spontaneously in the C3H/HeJ strain. Avy resembles Ay except that homozygotes are viable and resemble heterozygotes with lower members of the series. Both homozygotes (Avy/Avy) and heterozygotes (Avy/A and Avy/a) show considerable variation in appearance, ranging from clear yellow, through mottling with dark patches, to a completely agouti-like coat (J:5475). The variation is strongly influenced by the agouti-locus genotype and strain genome of the dam (J:6103). A larger proportion of homozygotes than heterozygotes are clear yellow (J:13080). In combination with the dominant spotting allele KitW-2J, Avy heterozygotes that have the agouti phenotype have much larger white spots than those of yellow or mottled yellow phenotype (J:12035). Homozygotes and heterozygotes tend to become obese, and the degree of obesity is correlated with the amount of yellow in the coat (J:13142), except that Eso prevents synthesis of yellow pigment in Avy/- mice but does not prevent obesity (J:6103). Avy resembles a in causing greater tumor susceptibility and lower graft vs. host reactivity (J:5320) and higher hepatic malic enzyme activity (J:5759). The greater tumor susceptibility as well as several altered immune responses occur in Avy/a mice of mottled phenotype but not in those of agouti phenotype (J:7421).

Genbank ID for this mutation: S74479

References
Original:  J:13080 DICKIES MM, A new viable yellow mutation in the house mouse. J Hered. 1962 Mar-Apr;53:84-6
All:  68 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
11/19/2024
MGI 6.24
The Jackson Laboratory