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Tnni3 Gene Detail
Summary
  • Symbol
    Tnni3
  • Name
    troponin I, cardiac 3
  • Synonyms
    cardiac troponin I, cTnI, Tn1
  • Feature Type
    protein coding gene
  • IDs
    MGI:98783
    NCBI Gene: 21954
  • Alliance
    genome feature page
  • Transcription Start Sites
    6 TSS
Location &
Maps
more
  • Sequence Map
    Chr7:4521304-4526228 bp, - strand
    From NCBI annotation of GRCm39
  • View this region in JBrowse
  • Genome Browsers
    Ensembl | UCSC | NCBI
  • Genetic Map
    Chromosome 7, 2.61 cM
  • Mapping Data
    8 experiments
Strain
Comparison
more
  • SNPs within 2kb
    239 from dbSNP Build 142
  • Strain Annotations
    17
  • PCR
    1
  • RFLP
    1
For selected strains:
Strain Gene Model ID Feature Type Coordinates Select Strains
C57BL/6J MGI_C57BL6J_98783
 protein coding gene Chr7:4521304-4527228 (-)
129S1/SvImJ ENSMUSG00200037919
 protein coding gene Chr7:1249572-1255014 (-)
A/J ENSMUSG00195047996
 protein coding gene Chr7:1229587-1235029 (-)
AKR/J ENSMUSG00220024808
 protein coding gene Chr7:2861137-2866579 (+)
BALB/cJ ENSMUSG00180044036
 protein coding gene Chr7:1195582-1201024 (-)
C3H/HeJ ENSMUSG00175039207
 protein coding gene Chr7:1187951-1193393 (-)
C57BL/6NJ ENSMUSG00215040556
 protein coding gene Chr7:1238006-1243448 (-)
CAROLI/EiJ MGP_CAROLIEiJ_G0029115
 protein coding gene Chr7:1207326-1213268 (-)
CAST/EiJ no annotation
CBA/J ENSMUSG00210046963
 protein coding gene Chr7:1187945-1193386 (-)
DBA/2J ENSMUSG00185038539
 protein coding gene Chr7:1373419-1378860 (-)
FVB/NJ ENSMUSG00205040192
 protein coding gene Chr7:1176841-1182282 (-)
JF1/MsJ ENSUMUG00000032980
 protein coding gene Chr7:1457989-1463438 (-)
LP/J ENSMUSG00230036342
 protein coding gene Chr7:4395086-4400529 (-)
NOD/ShiLtJ ENSMUSG00190033878
 protein coding gene Chr7:1259882-1265323 (-)
NZO/HlLtJ ENSMUSG00225018077
 protein coding gene Chr7:2314964-2320412 (-)
PWK/PhJ ENSLUMG00010045335
 protein coding gene Chr7:4952143-4957586 (-)
SPRET/EiJ ENSMSPG00010040791
 protein coding gene Chr7:1393045-1397490 (-)
WSB/EiJ no annotation



Homology
more
  • Human Ortholog
    TNNI3, troponin I3, cardiac type
  • Vertebrate Orthologs
    8
Vertebrate Orthology Source
Alliance of Genome Resources
  • Human Ortholog
    TNNI3, troponin I3, cardiac type
  • Synonyms
    CMD1FF, CMD2A, CMH7, cTnI, RCM1, TNNC1
  • Links
    NCBI Gene ID: 7137
    UniProt: P19429

  • Chr Location
    19q13.42; chr19:55151767-55157773 (-)  GRCh38
Human Diseases
more
  • Diseases
    2 with Tnni3 mouse models; 7 with human TNNI3 associations

Human Disease Mouse Models
      
IDs
 View 3 models
IDs
 View 2 models
      
IDs
IDs
IDs
IDs
IDs
Click on a disease name to see all genes associated with that disease.

  • Mutations/Alleles
    5 with disease annotations
  • References
    4 with disease annotations
Mutations,
Alleles, and
Phenotypes
less
  • Phenotype Summary
    34 phenotypes from 7 alleles in 5 genetic backgrounds
    6 phenotypes from multigenic genotypes
    1 images
    43 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.
Mice lacking both functional copies of this gene die of acute heart failure.
Gene Ontology
(GO)
Classifications
less
  • All GO Annotations
    61
  • GO References
    13
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
    969
  • Tissues
    155
  • cDNA Data
    82
  • Literature Summary
    145
  • Comparison Matrix
    Gene Expression + Phenotype
    • Sequences &
    Gene Models
    less
    Representative SequencesLengthStrain/SpeciesFlank
    genomic 21954 NCBI Gene Model | MGI Sequence Detail 4925 C57BL/6J ±  kb
    transcript NM_009406 RefSeq | MGI Sequence Detail 925 ZRU/MplStud  
    polypeptide P48787 UniProt | EBI | MGI Sequence Detail 211 Not Applicable  
    For the selected sequence
    Protein
    Information
    less
    Molecular
    Reagents
    less
    • All nucleic 106
      Genomic 5
      cDNA 83
      Primer pair 8
      Other 10
      Antibodies 14

      Microarray probesets 3
    Other
    Accession IDs
    less
    MGD-MRK-15158
    References
    more
    • Summaries
      All 261
      Developmental Gene Expression 145
      Diseases 4
      Gene Ontology 13
      Phenotypes 43
    • Earliest
      J:16384 Ausoni S, et al., Structure and regulation of the mouse cardiac troponin I gene. J Biol Chem. 1994 Jan 7;269(1):339-46
    • Latest
      J:391100 Gonzalez-Costa T, et al., Systemic and cardiac pathology induced by a clinically relevant USP8 activating mutation. Dis Model Mech. 2026 Jul 1;19(7)
    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
    09/01/2026
    MGI 6.24     		The Jackson Laboratory