TNNI3 - troponin I3, cardiac type Gene
Also Known as CMH7; RCM1; cTnI; CMD2A; TNNC1; CMD1FF
Species: Homo sapiens
About TNNI3
This gene has 10 transcripts (splice variants), 105 orthologues, 2 paralogues and is associated with 8 phenotypes. Restricted expression toward heart (RPKM 1543.0).
Summary
Troponin I (TnI), along with troponin T (TnT) and troponin C (TnC), is one of 3 subunits that form the troponin complex of the thin filaments of striated muscle. TnI is the inhibitory subunit; blocking actin-myosin interactions and thereby mediating striated muscle relaxation. The TnI subfamily contains three genes: TnI-skeletal-fast-twitch, TnI-skeletal-slow-twitch, and TnI-cardiac. This gene encodes the TnI-cardiac protein and is exclusively expressed in cardiac muscle tissues. Mutations in this gene cause familial hypertrophic cardiomyopathy type 7 (CMH7) and familial restrictive cardiomyopathy (RCM). Troponin I is useful in making a diagnosis of heart failure, and of ischemic heart disease. An elevated level of troponin is also now used as indicator of acute myocardial injury in patients hospitalized with moderate/severe Coronavirus Disease 2019 (COVID-19). Such elevation has also been associated with higher risk of mortality in Cardiovascular Disease patients hospitalized due to COVID-19. [provided by RefSeq, Aug 2020]
TNNI3 Products (1)
| mRNA | Protein | Name |
|---|---|---|
| NM_000363.5 | NP_000354.4 | troponin I, cardiac muscle |
| Molecular Function GO Annotation | Evidence | References | Source |
|---|---|---|---|
| enables actin binding |
IDA
IDA: Inferred from direct assay
|
10806205 | GOA |
| enables actin filament binding |
IPI
IPI: Inferred from physical interaction
|
25771144 | GOA |
| enables calcium channel inhibitor activity |
IPI
IPI: Inferred from physical interaction
|
12809519 | GOA |
| enables calcium-dependent protein binding |
IPI
IPI: Inferred from physical interaction
|
7957210 | GOA |
| enables protein binding |
IPI
IPI: Inferred from physical interaction
|
10806205 | GOA |
| enables protein domain specific binding |
IPI
IPI: Inferred from physical interaction
|
11984006 | GOA |
| enables protein kinase binding |
IPI
IPI: Inferred from physical interaction
|
12721663 | GOA |
| enables troponin C binding |
IPI
IPI: Inferred from physical interaction
|
7957210 | GOA |
| enables troponin T binding |
IPI
IPI: Inferred from physical interaction
|
15542288 | GOA |
| Biological Process GO Annotation | Evidence | References | Source |
|---|---|---|---|
| involved in cardiac muscle contraction |
IMP
IMP: Inferred from mutant phenotype
|
11735257 | GOA |
| involved in heart contraction |
IMP
IMP: Inferred from mutant phenotype
|
12531876 | GOA |
| involved in negative regulation of ATP-dependent activity |
IDA
IDA: Inferred from direct assay
|
7957210 | GOA |
| involved in negative regulation of ATP-dependent activity |
IMP
IMP: Inferred from mutant phenotype
|
10806205 | GOA |
| involved in regulation of cardiac muscle contraction by calcium ion signaling |
IMP
IMP: Inferred from mutant phenotype
|
25771144 | GOA |
| involved in ventricular cardiac muscle tissue morphogenesis |
IMP
IMP: Inferred from mutant phenotype
|
11815426 | GOA |
| Cellular Component GO Annotation | Evidence | References | Source |
|---|---|---|---|
| part of cardiac Troponin complex |
IMP
IMP: Inferred from mutant phenotype
|
25771144 | GOA |
| located in cardiac myofibril |
IMP
IMP: Inferred from mutant phenotype
|
25771144 | GOA |
| part of troponin complex |
IDA
IDA: Inferred from direct assay
|
7957210 | GOA |
TNNI3 Protein Structure
Troponin-I_N: Troponin I residues 1-32 (5 - 31)
Troponin: Troponin (46 - 177)
- 0
- 100
- 200
- 210 a.a.
| Protein Preferred Names | Protein Names | |
|---|---|---|
|
troponin I, cardiac muscle |
|
TNNI3 Protein-protein interaction Information
|
Type
|
Protein Name | Protein ID | Interactor | Interactor Species | Interactor ID | Detection Method | References |
|---|---|---|---|---|---|---|---|
|
Intra
|
TNNI3 | P19429 | IFNA4 | Homo sapiens | P05014 | 33961781 | |
|
Intra
|
TNNI3 | P19429 | IFNA4 | Homo sapiens | P05014 | 28514442 | |
|
Intra
|
TNNI3 | P19429 | TNNC2 | Homo sapiens | P02585 | 25910212 | |
|
Intra
|
TNNI3 | P19429 | TNNC2 | Homo sapiens | P02585 | 25910212 | |
|
Intra
|
TNNI3 | P19429 | TNNC2 | Homo sapiens | P02585 | 25910212 | |
|
Intra
|
TNNI3 | P19429 | PDE4DIP | Homo sapiens | Q5VU43-11 | 21569246 | |
|
Intra
|
TNNI3 | P19429 | TNNC1 | Homo sapiens | P63316 | 29997244 | |
|
Intra
|
TNNI3 | P19429 | TNNC1 | Homo sapiens | P63316 | 33961781 | |
|
Intra
|
TNNI3 | P19429 | WFS1 | Homo sapiens | O76024 | 32814053 | |
|
Intra
|
TNNI3 | P19429 | WFS1 | Homo sapiens | O76024 | 32814053 | |
|
Intra
|
TNNI3 | P19429 | WFS1 | Homo sapiens | O76024 | 32814053 | |
|
Intra
|
TNNI3 | P19429 | PEX1 | Homo sapiens | O43933 | 32814053 | |
|
Intra
|
TNNI3 | P19429 | PEX1 | Homo sapiens | O43933 | 32814053 | |
|
Intra
|
TNNI3 | P19429 | PEX1 | Homo sapiens | O43933 | 32814053 |
TNNI3 Antibodies
| Cat. No. | Product Name | Application | Reactivity |
|---|---|---|---|
| HY-P81144 | Cardiac Troponin I Antibody (YA3484) | WB, IHC-P, ICC/IF, IP | Human |
| HY-P82380 | Cardiac Troponin I/TNNC1 Antibody (YA2125) | WB, IHC-P | Human, Mouse, Rat |
| HY-P85398 | Cardiac Troponin I Antibody (YA5090) | IHC-P; IHC-F; IF-Tissue | Human, Rat, Mouse |
| HY-P85398A | Cardiac Troponin I Antibody (YA5090)(PBS only) | IHC-P; IHC-F; IF-Tissue | Human, Rat, Mouse |
| HY-P86427 | Cardiac Troponin I Antibody (YA6119) | WB, IHC-P, ICC/IF, IP, ELISA | Human, Mouse, Rat |
Related Diseases
| Diseases | Alias | |
|---|---|---|
| Cardiomyopathy, Dilated, 2a |
|
|
| Cardiomyopathy, Familial Hypertrophic, 7 |
|
|
| Cardiomyopathy, Dilated, 1ff |
|
|
| Cardiomyopathy, Familial Restrictive, 1 |
|
|
| Restrictive Cardiomyopathy |
|
|
| Myocarditis |
|
|
| Hypertrophic Cardiomyopathy |
|
|
| Familial Isolated Restrictive Cardiomyopathy |
|
|
| Sudden Infant Death Syndrome |
|
|
| Cardiomyopathy, Familial Hypertrophic, 1 |
|
|
| Dilated Cardiomyopathy |
|
|
| Familial Isolated Dilated Cardiomyopathy |
|
|
| Myocardial Stunning |
|
|
| Heart Disease |
|
|
| Coronary Stenosis |
|
|
| Cardiomyopathy, Dilated, 1a |
|
|
| Angina Pectoris |
|
|
| Cardiomyopathy, Dilated, 1b |
|
|
| Cardiomyopathy, Dilated, 1h |
|
|
| Covid-19 |
|
|
| Acute Myocardial Infarction |
|
|
| Acute Myocarditis |
|
|
| Epicardium Cancer |
|
|
| Pulmonary Embolism |
|
|
| Left Bundle Branch Hemiblock |
|
|
| Pericardium Disease |
|
|
| Endocarditis |
|
|
| Fabry Disease |
|
|
| Hypoplastic Left Heart Syndrome |
|
|
| Rheumatic Myocarditis |
|
|
| Extrinsic Cardiomyopathy |
|
|
| Pulmonary Edema |
|
|
| Toxic Myocarditis |
|
|
| Intermediate Coronary Syndrome |
|
|
| Peripheral Neuropathy With Variable Spasticity, Exercise Intolerance, And Developmental Delay |
|
|
| Gastric Dilatation |
|
|
| Tricuspid Valve Disease |
|
|
| Fiedler'S Myocarditis |
|
|
| Inferior Myocardial Infarction |
|
|
| Congestive Heart Failure |
|
|
| Coronary Artery Vasospasm |
|
|
| Myocardial Infarction |
|
|
| Second-Degree Atrioventricular Block |
|
|
| Pulmonary Artery Disease |
|
|
| Silent Myocardial Infarction |
|
|
| Atrial Fibrillation |
|
|
| Diastolic Heart Failure |
|
|
| Mitral Valve Disease |
|
|
| Lipoprotein Quantitative Trait Locus |
|
|
| Gas Gangrene |
|
|
| Acute Inferolateral Myocardial Infarction |
|
|
| Mitral Valve Insufficiency |
|
|
| Constrictive Pericarditis |
|
|
| Hemopericardium |
|
|
| Friedreich Ataxia |
|
|
| Tricuspid Valve Insufficiency |
|
|
| Cardiac Tamponade |
|
|
| Third-Degree Atrioventricular Block |
|
|
| Pericardial Effusion |
|
|
| Systolic Heart Failure |
|
|
| Right Bundle Branch Block |
|
|
| Intrinsic Cardiomyopathy |
|
|
| Autoimmune Myocarditis |
|
|
| First-Degree Atrioventricular Block |
|
|
| Nemaline Myopathy 5 |
|
|
| Posterior Myocardial Infarction |
|
|
| Heart Conduction Disease |
|
|
| Acute Pulmonary Heart Disease |
|
|
| Autoimmune Cardiomyopathy |
|
|
| Heart Valve Disease |
|
|
| Nonobstructive Coronary Artery Disease |
|
|
| Cardiomyopathy, Dilated, 1m |
|
|
| Non-Severe Covid-19 |
|
|
| Atrioventricular Block |
|
|
| Interstitial Myocarditis |
|
|
| Subvalvular Aortic Stenosis |
|
|
| Aortic Valve Insufficiency |
|
|
| Coronary Thrombosis |
|
|
| Acute Cor Pulmonale |
|
|
| Immunoglobulin Light Chain Amyloidosis |
|
|
| Dirofilariasis |
|
|
| Pericarditis |
|
|
| Hypertensive Heart Disease |
|
|
| Myopathy |
|
|
| Muscular Dystrophy, Duchenne Type |
|
|
| Heart Cancer |
|
|
| Cardiac Arrest |
|
|
| Left Ventricular Noncompaction |
|
|
| Aortic Dissection |
|
|
| Volvulus Of Midgut |
|
|
| Acidophil Adenoma |
|
|
| Coronavirus Infectious Disease |
|
|
| Muscular Dystrophy |
|
|
| Chronic Kidney Disease |
|
|
| Aortic Valve Disease 2 |
|
|
| Arteries, Anomalies Of |
|
|
| Patent Foramen Ovale |
|
|
| Intracranial Berry Aneurysm |
|
|
| Hypertension, Essential |
|
|
| Atrial Heart Septal Defect |
|
|
| Lethal Congenital Contracture Syndrome 4 |
|
|
| Type 1 Diabetes Mellitus 8 |
|
|
| Respiratory Failure |
|
|
| Arrhythmogenic Right Ventricular Cardiomyopathy |
|
|
| Brugada Syndrome |
|
|
| Long Qt Syndrome |
|
|
| Rasopathy |
|
|
| Tetralogy Of Fallot |
|
|
Orthologs Information
| Species | Symbol | Source | ID |
|---|---|---|---|
| Rattus norvegicus | TNNI3 | RGD | RGD:62052 |
| Bos taurus | TNNI3 | VGNC | VGNC:36193 |
| Macaca mulatta | TNNI3 | VGNC | VGNC:78605 |
| Mus musculus | TNNI3 | MGD | MGI:98783 |
| Canis familiaris | TNNI3 | VGNC | VGNC:47689 |
| Others | TNNI3 | NCBI |