About   Help   FAQ
Mammalian Phenotype Ontology Annotations
Query Results - Summary
Symbol
Name
ID
Mtnr1a
melatonin receptor 1A
MGI:102967
21 phenotypes from 2 alleles in 3 genetic backgrounds
Export: Excel File
Allelic Composition
Genetic Background
Annotated Term Reference
Mtnr1aem1Stko/Mtnr1a+
involves: C57BL/6 * CBA/J
abnormal osteoblast physiology J:370727
abnormal trabecular bone morphology J:370727
decreased bone mass J:370727
decreased bone mineralization J:370727
decreased bone ossification J:370727
decreased bone trabecula number J:370727
decreased bone volume J:370727
decreased osteoblast cell number J:370727
decreased osteoblast proliferation J:370727
impaired osteoblast differentiation J:370727
increased bone resorption J:370727
increased osteoclast cell number J:370727
increased urine calcium level J:370727
Mtnr1atm1Rep/Mtnr1atm1Rep
involves: 129S4/SvJae * C3Hf/HeA * C57BL/LiA
abnormal electroretinogram waveform feature J:153084
decreased a-wave amplitude J:153084
decreased b-wave amplitude J:153084
decreased retina ganglion cell number J:153084
retina photoreceptor degeneration J:153084
short photoreceptor inner segment J:153084
short photoreceptor outer segment J:153084
Mtnr1atm1Rep/Mtnr1atm1Rep
involves: 129S4/SvJae * C57BL/6
abnormal neuron physiology J:41859

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)
Citing These Resources
Funding Information
Warranty Disclaimer, Privacy Notice, Licensing, & Copyright
Send questions and comments to User Support.
last database update
09/30/2025
MGI 6.24
The Jackson Laboratory