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Gjd2 Gene Detail
Summary
  • Symbol
    Gjd2
  • Name
    gap junction protein, delta 2
  • Synonyms
    connexin36, Cx36, Gja9
  • Feature Type
    protein coding gene
  • IDs
    MGI:1334209
    NCBI Gene: 14617
  • Alliance
    genome feature page
  • Transcription Start Sites
    1 TSS
Location &
Maps
more
  • Sequence Map
    Chr2:113840082-113844100 bp, - strand
    From Ensembl annotation of GRCm39
  • View this region in JBrowse
  • Genome Browsers
    Ensembl | UCSC | NCBI
  • Genetic Map
    Chromosome 2, 57.54 cM, cytoband F3
  • Mapping Data
    2 experiments
Strain
Comparison
more
  • SNPs within 2kb
    109 from dbSNP Build 142
  • Strain Annotations
    19
For selected strains:
Strain Gene Model ID Feature Type Coordinates Select Strains
C57BL/6J MGI_C57BL6J_1334209
 protein coding gene Chr2:113840082-113844555 (-)
129S1/SvImJ ENSMUSG00200006883
 protein coding gene Chr2:110727990-110732008 (-)
A/J ENSMUSG00195027739
 protein coding gene Chr2:110789748-110793768 (-)
AKR/J ENSMUSG00220004877
 protein coding gene Chr2:110685212-110689232 (-)
BALB/cJ ENSMUSG00180029228
 protein coding gene Chr2:110584974-110588994 (-)
C3H/HeJ ENSMUSG00175028796
 protein coding gene Chr2:111033984-111038002 (-)
C57BL/6NJ ENSMUSG00215019898
 protein coding gene Chr2:110741952-110745970 (-)
CAROLI/EiJ MGP_CAROLIEiJ_G0024101
 protein coding gene Chr2:106910832-106914868 (-)
CAST/EiJ ENSTCUG00005005371
 protein coding gene Chr2:109968850-109972867 (-)
CBA/J ENSMUSG00210033395
 protein coding gene Chr2:110858893-110862913 (-)
DBA/2J ENSMUSG00185038094
 protein coding gene Chr2:110581289-110585309 (-)
FVB/NJ ENSMUSG00205014158
 protein coding gene Chr2:109839842-109843862 (-)
JF1/MsJ ENSUMUG00000003396
 protein coding gene Chr2:110425237-110429257 (-)
LP/J ENSMUSG00230003983
 protein coding gene Chr2:112390092-112394110 (-)
NOD/ShiLtJ ENSMUSG00190014665
 protein coding gene Chr2:110819781-110823801 (-)
NZO/HlLtJ ENSMUSG00225012783
 protein coding gene Chr2:120277455-120281475 (-)
PWK/PhJ ENSLUMG00010002902
 protein coding gene Chr2:110343108-110347114 (-)
SPRET/EiJ ENSMSPG00010030799
 protein coding gene Chr2:112594793-112598801 (-)
WSB/EiJ ENSIUOG00005030257
 protein coding gene Chr2:110512508-110516533 (-)



Homology
more
  • Human Ortholog
    GJD2, gap junction protein delta 2
  • Vertebrate Orthologs
    4
Vertebrate Orthology Source
Alliance of Genome Resources
  • Human Ortholog
    GJD2, gap junction protein delta 2
  • Synonyms
    CX36, GJA9
  • Links
    NCBI Gene ID: 57369
    UniProt: Q9UKL4

  • Chr Location
    15q14; chr15:34751032-34754998 (-)  GRCh38
Mutations,
Alleles, and
Phenotypes
less
  • Phenotype Summary
    21 phenotypes from 5 alleles in 5 genetic backgrounds
    137 phenotype references
Phenotype Overview

adipose tissue
behavior/neurological
cardiovascular system
cellular
craniofacial
digestive/alimentary system
embryo
endocrine/exocrine glands
growth/size/body
hearing/vestibular/ear
hematopoietic system
homeostasis/metabolism
integument
immune system
limbs/digits/tail
liver/biliary system
mortality/aging
muscle
nervous system
pigmentation
renal/urinary system
reproductive system
respiratory system
skeleton
taste/olfaction
neoplasm
vision/eye

Click cells to view annotations.
Nullizygous mutations can cause loss of electrical synapses, impaired synchronous activity of inhibitory networks, altered spike synchrony in OB glomeruli, absent coupling of alpha-ganglion cells in retina, and abnormal cued conditioning, nerve fiber andsingle cell responses, and insulin secretion.
Gene Ontology
(GO)
Classifications
less
  • All GO Annotations
    15
  • GO References
    8
Molecular Function

carbohydrate derivative binding
cytoskeletal protein binding
DNA binding
enzyme regulator
hydrolase
ligase
lipid binding
oxidoreductase
RNA binding
signaling receptor activity
signaling receptor binding
transcription
transferase
transporter
Biological Process

carbohydrate derivative metabolism
cell differentiation
cell population proliferation
cellular component organization
DNA-templated transcription
establishment of localization
homeostatic process
immune system process
lipid metabolic process
programmed cell death
protein metabolic process
response to stimulus
signaling
system development
Cellular Component

cell projection
cytoplasmic vesicle
cytoskeleton
cytosol
endoplasmic reticulum
endosome
extracellular region
Golgi apparatus
mitochondrion
membraneless organelle
nucleus
organelle envelope
organelle lumen
plasma membrane
protein-containing complex
synapse
vacuole
Click cells to view annotations.
Expression
less
Expression Overview

early conceptus
embryo ectoderm
embryo endoderm
embryo mesoderm
embryo mesenchyme
extraembryonic component
alimentary system
auditory system
branchial arches
cardiovascular system
connective tissue
endocrine system
exocrine system
hemolymphoid system
integumental system
limbs
liver and biliary system
musculoskeletal system
nervous system
olfactory system
reproductive system
respiratory system
urinary system
visual system
Click cells to view annotations.


  • Assay Results
    811
  • Tissues
    71
  • cDNA Data
    8
  • Literature Summary
    20
  • Comparison Matrix
    Gene Expression + Phenotype
    • Sequences &
    Gene Models
    less
    Representative SequencesLengthStrain/SpeciesFlank
    genomic ENSMUSG00000068615 Ensembl Gene Model | MGI Sequence Detail 4019 C57BL/6J ±  kb
    transcript ENSMUST00000090275 Ensembl | MGI Sequence Detail 2879 Not Applicable  
    polypeptide ENSMUSP00000087742 Ensembl | MGI Sequence Detail 321 Not Applicable  
    For the selected sequence
    Protein
    Information
    less
    Molecular
    Reagents
    less
    • All nucleic 18
      Genomic 5
      cDNA 8
      Primer pair 4
      Other 1
      Antibodies 1

      Microarray probesets 3
    References
    more
    • Summaries
      All 204
      Developmental Gene Expression 20
      Gene Ontology 8
      Phenotypes 137
    • Earliest
      J:109968 Roderick TH, et al., Nineteen paracentric chromosomal inversions in mice. Genetics. 1974 Jan;76(1):109-17
    • Latest
      J:389707 Beaudoin DL, et al., Rod photoreceptors control the ON vs OFF polarity of cone-signaling neurons. Commun Biol. 2026 Mar 19;9(1)
    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
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    Send questions and comments to User Support.     		last database update
    09/08/2026
    MGI 6.24     		The Jackson Laboratory