APOB - apolipoprotein B Gene
Also Known as FLDB; FCHL2; LDLCQ4; apoB-48; apoB-100
Species: Homo sapiens
About APOB
This gene has 4 transcripts (splice variants), 361 orthologues and is associated with 6 phenotypes. Biased expression in liver (RPKM 415.6), small intestine (RPKM 182.7) and 1 other tissue.
Summary
This gene product is the main Apolipoprotein of chylomicrons and low density lipoproteins (LDL), and is the ligand for the LDL receptor. It occurs in plasma as two main isoforms, apoB-48 and apoB-100: the former is synthesized exclusively in the gut and the latter in the liver. The intestinal and the hepatic forms of apoB are encoded by a single gene from a single, very long mRNA. The two isoforms share a common N-terminal sequence. The shorter apoB-48 protein is produced after RNA editing of the apoB-100 transcript at residue 2180 (CAA->UAA), resulting in the creation of a stop codon, and early translation termination. Mutations in this gene or its regulatory region cause hypobetalipoproteinemia, normotriglyceridemic hypobetalipoproteinemia, and hypercholesterolemia due to ligand-defective apoB, diseases affecting plasma Cholesterol and apoB levels. [provided by RefSeq, Dec 2019]
APOB Products (1)
| mRNA | Protein | Name |
|---|---|---|
| NM_000384.3 | NP_000375.3 | apolipoprotein B-100 precursor |
| Molecular Function GO Annotation | Evidence | Verweise | Source |
|---|---|---|---|
| enables cholesterol transfer activity |
IMP
IMP: Inferred from mutant phenotype
|
15797858 | GOA |
| enables heparin binding |
IDA
IDA: Inferred from direct assay
|
16233946 | GOA |
| enables lipase binding |
IPI
IPI: Inferred from physical interaction
|
9685400 | GOA |
| enables low-density lipoprotein particle receptor binding |
IMP
IMP: Inferred from mutant phenotype
|
2563166 | GOA |
| enables low-density lipoprotein particle receptor binding |
IPI
IPI: Inferred from physical interaction
|
27477018 | GOA |
| enables phospholipid binding |
IDA
IDA: Inferred from direct assay
|
7126555 | GOA |
| enables protein binding |
IPI
IPI: Inferred from physical interaction
|
8245722 | GOA |
| enables receptor ligand activity |
IDA
IDA: Inferred from direct assay
|
27477018 | GOA |
| Cellular Component GO Annotation | Evidence | Verweise | Source |
|---|---|---|---|
| part of chylomicron |
IDA
IDA: Inferred from direct assay
|
4363408 | GOA |
| located in cytoplasm |
IDA
IDA: Inferred from direct assay
|
22580899 | GOA |
| located in endoplasmic reticulum exit site |
IDA
IDA: Inferred from direct assay
|
27138255 | GOA |
| is active in extracellular space |
IDA
IDA: Inferred from direct assay
|
26224785 | GOA |
| part of intermediate-density lipoprotein particle |
IDA
IDA: Inferred from direct assay
|
1917954 | GOA |
| part of low-density lipoprotein particle |
IDA
IDA: Inferred from direct assay
|
4363408 | GOA |
| part of mature chylomicron |
IDA
IDA: Inferred from direct assay
|
4363408 | GOA |
| located in neuronal cell body |
IDA
IDA: Inferred from direct assay
|
22897442 | GOA |
| part of very-low-density lipoprotein particle |
IDA
IDA: Inferred from direct assay
|
4363408 | GOA |
APOB Protein Structure
Vitellogenin_N: Lipoprotein amino terminal region (46 - 597)
DUF1943: Domain of unknown function (DUF1943) (632 - 943)
DUF1081: Domain of Unknown Function (DUF1081) (958 - 1071)
ApoB100_C: Apolipoprotein B100 C terminal (4494 - 4550)
- 0
- 800
- 1600
- 2400
- 3200
- 4000
- 4563 a.a.
| Protein Preferred Names | Protein Names | |
|---|---|---|
|
apolipoprotein B-100 |
|
APOB Protein-protein interaction Information
|
Type
|
Protein Name | Protein ID | Interactor | Interactor Species | Interactor ID | Detection Method | Verweise |
|---|---|---|---|---|---|---|---|
|
Intra
|
APOB | P04114 | LDLR | Homo sapiens | P01130 | 24447298 | |
|
Intra
|
APOB | P04114 | LDLR | Homo sapiens | P01130 | 24447298 | |
|
Cross
|
APOB | P04114 | P29991-PRO_0000037946 | Dengue virus type 2 | P29991-PRO_0000037946 | 21911577 | |
|
Cross
|
APOB | P04114 | P29991-PRO_0000037946 | Dengue virus type 2 | P29991-PRO_0000037946 | 21911577 |
Recombinant APOB Proteins
| Art. -Nr. | Produktname | Accession | Reinheit |
|---|---|---|---|
| HY-P7524 | Apolipoprotein B-100/APOB Protein, Human (His, solution) | P04114 (E28-S127) | ≥ 90%, as determined by reducing SDS-PAGE. |
APOB Antibodies
| Art. -Nr. | Produktname | Anwendung | Reactivity |
|---|---|---|---|
| HY-P82821 | ApoB Antibody (YA2566) | WB, IP, FC | Human |
| HY-P83937 | ApoB Antibody (YA3634) | ICC/IF, FC, ELISA | Human |
| HY-P83937A | ApoB Antibody (YA3634)(PBS only) | ICC/IF, FC, ELISA | Human |
Related Diseases
| Diseases | Alias | |
|---|---|---|
| Hypobetalipoproteinemia, Familial, 1 |
|
|
| Hypercholesterolemia, Familial, 2 |
|
|
| Homozygous Familial Hypercholesterolemia |
|
|
| Familial Hypercholesterolemia |
|
|
| Hyperlipidemia, Familial Combined, 3 |
|
|
| Hypercholesterolemia, Familial, 1 |
|
|
| Familial Hyperlipidemia |
|
|
| Abetalipoproteinemia |
|
|
| Peripheral Vascular Disease |
|
|
| Chylomicron Retention Disease |
|
|
| Arcus Corneae |
|
|
| Carotid Artery Disease |
|
|
| Arteriosclerosis |
|
|
| Vascular Disease |
|
|
| Hypolipoproteinemia |
|
|
| Hyperlipoproteinemia, Type Iii |
|
|
| Hypertriglyceridemia 1 |
|
|
| Hyperlipoproteinemia, Type V |
|
|
| Cerebrovascular Disease |
|
|
| Lipid Metabolism Disorder |
|
|
| Myocardial Infarction |
|
|
| Xanthomatosis |
|
|
| Lecithin:Cholesterol Acyltransferase Deficiency |
|
|
| Sitosterolemia |
|
|
| Hyperalphalipoproteinemia 1 |
|
|
| Cardiovascular System Disease |
|
|
| Atherosclerosis Susceptibility |
|
|
| Heart Disease |
|
|
| Hyperinsulinism |
|
|
| Aortic Atherosclerosis |
|
|
| Type 2 Diabetes Mellitus |
|
|
| Lipoprotein Quantitative Trait Locus |
|
|
| Hyperuricemia |
|
|
| Non-Alcoholic Fatty Liver Disease |
|
|
| Prediabetes Syndrome |
|
|
| Riboflavin Deficiency |
|
|
| Tangier Disease |
|
|
| Hypothyroidism |
|
|
| Coronary Heart Disease 1 |
|
|
| Niemann-Pick Disease |
|
|
| Type 1 Diabetes Mellitus |
|
|
| Hyperglycemia |
|
|
| Hypobetalipoproteinemia, Familial, 2 |
|
|
| Hypercholesterolemia, Familial, 4 |
|
|
| Acute Myocardial Infarction |
|
|
| Coronary Stenosis |
|
|
| Hyperlipoproteinemia, Type Iv |
|
|
| Corneal Degeneration |
|
|
| Fatty Liver Disease |
|
|
| Hyperlipoproteinemia, Type I |
|
|
| Diabetes Mellitus |
|
|
| Nephrotic Syndrome |
|
|
| Macular Degeneration, Age-Related, 1 |
|
|
| Sleep Apnea |
|
|
| Tobacco Addiction |
|
|
| Hypertension, Essential |
|
|
| Fetal Macrosomia |
|
|
| Familial Lipoprotein Lipase Deficiency |
|
|
| Nonobstructive Coronary Artery Disease |
|
|
| Abdominal Obesity-Metabolic Syndrome 1 |
|
|
| Silent Myocardial Infarction |
|
|
| Intestinal Pseudo-Obstruction |
|
|
| Hypoalphalipoproteinemia |
|
|
| Hepatoblastoma |
|
|
| Juvenile Rheumatoid Arthritis |
|
|
| Gestational Diabetes |
|
|
| Liver Disease |
|
|
| Body Mass Index Quantitative Trait Locus 11 |
|
|
| Hypoalphalipoproteinemia, Primary, 1 |
|
|
| Kidney Disease |
|
|
| Acquired Immunodeficiency Syndrome |
|
|
| Intermediate Coronary Syndrome |
|
|
| Hypoalphalipoproteinemia, Primary, 2 |
|
|
| Peripheral Artery Disease |
|
|
| Generalized Atherosclerosis |
|
|
| Beta-Thalassemia |
|
|
| Cerebral Atherosclerosis |
|
|
| Lysosomal And Lipase Deficiency |
|
|
| Platelet Glycoprotein Iv Deficiency |
|
|
| Cholesterol Ester Storage Disease |
|
|
| Aortic Valve Disease 1 |
|
|
| Holoprosencephaly |
|
|
| Stroke, Ischemic |
|
|
| Lysosomal Acid Lipase Deficiency |
|
|
| Chronic Kidney Disease |
|
|
| Arteries, Anomalies Of |
|
|
| Aortic Valve Disease 2 |
|
|
| Hepatic Flexure Cancer |
|
|
| Ichthyosis |
|
|
| Inherited Metabolic Disorder |
|
|
| Lipid Storage Disease |
|
|
| Abdominal Obesity-Metabolic Syndrome Quantitative Trait Locus 2 |
|
|
| Non-Alcoholic Steatohepatitis |
|
|
| Overnutrition |
|
|
| Carbohydrate Metabolic Disorder |
|
|
| Glucose Metabolism Disease |
|
|
| Acquired Metabolic Disease |
|
|
| Osteoporosis |
|
|
| Inflammatory Bowel Disease |
|
|
| Alzheimer Disease, Familial, 1 |
|
|
| Maturity-Onset Diabetes Of The Young |
|
|
| Nervous System Disease |
|
|
| Retinitis Pigmentosa |
|
|
Orthologs Information
| Species | Symbol | Source | ID |
|---|---|---|---|
| Canis familiaris | APOB | VGNC | VGNC:37994 |
| Mus musculus | APOB | MGD | MGI:88052 |
| Rattus norvegicus | APOB | RGD | RGD:2129 |
| Macaca mulatta | APOB | VGNC | VGNC:69985 |
| Bos taurus | APOB | VGNC | VGNC:26026 |
| Felis catus | APOB | VGNC | VGNC:67787 |
| Others | APOB | NCBI |