PITPNB - phosphatidylinositol transfer protein beta Gene
Also Known as VIB1B; PtdInsTP; PI-TP-beta
Species: Homo sapiens
About PITPNB
This gene has 10 transcripts (splice variants), 221 orthologues and 5 paralogues. Ubiquitous expression in esophagus (RPKM 27.0), urinary bladder (RPKM 21.0) and 25 other tissues.
Summary
This gene encodes a cytoplasmic protein that catalyzes the transfer of phosphatidylinositol and phosphatidylcholine between membranes. This transfer activity is required for COPI complex-mediated retrograde transport from the Golgi apparatus to the endoplasmic reticulum. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Sep 2013]
PITPNB Products (3)
| mRNA | Protein | Name |
|---|---|---|
| NM_001284277.2 | NP_001271206.1 | phosphatidylinositol transfer protein beta isoform isoform 2 |
| NM_001284278.2 | NP_001271207.1 | phosphatidylinositol transfer protein beta isoform isoform 3 |
| NM_012399.5 | NP_036531.1 | phosphatidylinositol transfer protein beta isoform isoform 1 |
| Molecular Function GO Annotation | Evidence | References | Source |
|---|---|---|---|
| enables phosphatidylcholine binding |
IDA
IDA: Inferred from direct assay
|
16274224 | GOA |
| enables phosphatidylcholine transfer activity |
EXP
EXP: Inferred from Experiment
|
11104777 | GOA |
| enables phosphatidylcholine transfer activity |
IMP
IMP: Inferred from mutant phenotype
|
18636990 | GOA |
| enables phosphatidylcholine transporter activity |
IDA
IDA: Inferred from direct assay
|
16274224 | GOA |
| enables phosphatidylinositol binding |
IDA
IDA: Inferred from direct assay
|
16274224 | GOA |
| enables phosphatidylinositol transfer activity |
EXP
EXP: Inferred from Experiment
|
11104777 | GOA |
| enables phosphatidylinositol transfer activity |
IDA
IDA: Inferred from direct assay
|
10531358 | GOA |
| enables phosphatidylinositol transfer activity |
IMP
IMP: Inferred from mutant phenotype
|
18636990 | GOA |
| enables protein binding |
IPI
IPI: Inferred from physical interaction
|
32814053 | GOA |
| Biological Process GO Annotation | Evidence | References | Source |
|---|---|---|---|
| involved in phospholipid transport |
IDA
IDA: Inferred from direct assay
|
16274224 | GOA |
| involved in retrograde vesicle-mediated transport, Golgi to endoplasmic reticulum |
IMP
IMP: Inferred from mutant phenotype
|
20332109 | GOA |
PITPNB Protein Structure
IP_trans: Phosphatidylinositol transfer protein (2 - 254)
- 0
- 100
- 200
- 271 a.a.
| Protein Preferred Names | Protein Names | |
|---|---|---|
|
phosphatidylinositol transfer protein beta isoform |
|
Related Diseases
| Diseases | Alias | |
|---|---|---|
| Cone-Rod Dystrophy 5 |
|
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| Nonparalytic Poliomyelitis |
|
|
| Cleft Soft Palate |
|
|
| Cerebellopontine Angle Tumor |
|
|
| Cone-Rod Dystrophy 2 |
|
|
Orthologs Information
| Species | Symbol | Source | ID |
|---|---|---|---|
| Rattus norvegicus | PITPNB | RGD | RGD:620143 |
| Canis familiaris | PITPNB | VGNC | VGNC:44584 |
| Felis catus | PITPNB | VGNC | VGNC:68868 |
| Macaca mulatta | PITPNB | VGNC | VGNC:76006 |
| Bos taurus | PITPNB | VGNC | VGNC:32920 |
| Mus musculus | PITPNB | MGD | MGI:1927542 |
| Others | PITPNB | NCBI |