National and Kapodistrian University of Athens
Department of Biology
Biophysics & Bioinformatics Laboratory
Protein Information |
|
|---|---|
| Protein Name | Phospholipase A and acyltransferase 3 |
| Accession Code | Q5R611 |
| Gene | PLAAT3 |
| Organism | Pongo abelii | Sumatran orangutan (Taxonomy: 9601) |
| Part of Reference Proteome? | Yes |
| Sequence (Length: 162) |
Description |
Position in the Nuclear Envelope |
|
|---|---|---|
| Location | Location ID | Description |
| Nuclear Envelope | SL-0178 | The nuclear envelope is a membrane system which surrounds the nucleoplasm of eukaryotic cells. It is composed of the nuclear lamina, nuclear pore complexes and two nuclear membranes. The space between the two membranes is called the nuclear intermembrane space. |
| Perinuclear Region | SL-0198 | The perinuclear region is the cytoplasmic region just around the nucleus. | Membrane Topology |
| Topology | Source | Annotation Type |
| Transmembrane | UniProt | Sequence Analysis {ECO:0000255} | Assigned Ontology terms |
Description |
|
|---|---|
| Exhibits both phospholipase A1/2 and acyltransferase activities (By similarity). Shows phospholipase A1 (PLA1) and A2 (PLA2), catalyzing the calcium-independent release of fatty acids from the sn-1 or sn-2 position of glycerophospholipids (By similarity). For most substrates, PLA1 activity is much higher than PLA2 activity (By similarity). Shows O-acyltransferase activity, catalyzing the transfer of a fatty acyl group from glycerophospholipid to the hydroxyl group of lysophospholipid (By similarity). Shows N-acyltransferase activity, catalyzing the calcium-independent transfer of a fatty acyl group at the sn-1 position of phosphatidylcholine (PC) and other glycerophospholipids to the primary amine of phosphatidylethanolamine (PE), forming N-acylphosphatidylethanolamine (NAPE), which serves as precursor for N-acylethanolamines (NAEs) (By similarity). Exhibits high N-acyltransferase activity and low phospholipase A1/2 activity (By similarity). Required for complete organelle rupture and degradation that occur during eye lens terminal differentiation, when fiber cells that compose the lens degrade all membrane-bound organelles in order to provide lens with transparency to allow the passage of light. Organelle membrane degradation is probably catalyzed by the phospholipase activity (By similarity). {By SimilarityUniProtKB:P53816, By SimilarityUniProtKB:Q8R3U1}. | Assigned Ontology terms |
National and Kapodistrian University of Athens
Department of Biology
Biophysics & Bioinformatics Laboratory