A0A803KFV6 · A0A803KFV6_XENTR
- ProteinPhospholipase B1, membrane-associated
- Geneplb1
- StatusUniProtKB unreviewed (TrEMBL)
- Amino acids1423 (go to sequence)
- Protein existenceInferred from homology
- Annotation score5/5
Function
function
Calcium-independent membrane-associated phospholipase that catalyzes complete diacylation of phospholipids by hydrolyzing both sn-1 and sn-2 fatty acyl chains attached to the glycerol backbone (phospholipase B activity). Has dual phospholipase and lysophospholipase activities toward diacylphospholipids. Preferentially cleaves sn-2 ester bonds over sn-1 bonds. Acts as a lipase toward glycerolipid substrates. Hydrolyzes fatty acyl chains of diacylglycerols with preference for the sn-2 position and of triacylglycerols with not positional selectivity. May also hydrolyze long chain retinyl esters such as retinyl palmitate. May contribute to digestion of dietary phospholipids, glycerolipids and retinoids, facilitating lipid absorption at the brush border.
Catalytic activity
- 1,2,3-tri-(9Z-octadecenoyl)-glycerol + H2O = di-(9Z)-octadecenoylglycerol + (9Z)-octadecenoate + H+This reaction proceeds in the forward direction.
- 1,2-di-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + H2O = 1-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + (9Z)-octadecenoate + H+This reaction proceeds in the forward direction.
- 1,2-dihexadecanoyl-sn-glycero-3-phosphocholine + 2 H2O = sn-glycerol 3-phosphocholine + 2 hexadecanoate + 2 H+This reaction proceeds in the forward direction.
- 1,2-dihexadecanoyl-sn-glycero-3-phosphocholine + H2O = 1-hexadecanoyl-sn-glycero-3-phosphocholine + hexadecanoate + H+This reaction proceeds in the forward direction.
- 1,3-di-(9Z-octadecenoyl)-glycerol + H2O = 1-(9Z-octadecenoyl)-glycerol + (9Z)-octadecenoate + H+This reaction proceeds in the forward direction.
- 1,3-dihexadecanoyl-2-(9Z-octadecenoyl)glycerol + H2O = 1,3-dihexadecanoylglycerol + (9Z)-octadecenoate + H+This reaction proceeds in the forward direction.
- 1,3-dihexadecanoyl-2-(9Z-octadecenoyl)glycerol + H2O = 1-hexadecanoyl-2-(9Z-octadecenoyl)-glycerol + hexadecanoate + H+This reaction proceeds in the forward direction.
- 1-(9Z-octadecenoyl)-glycerol + H2O = glycerol + (9Z)-octadecenoate + H+This reaction proceeds in the forward direction.
- 1-O-hexadecyl-2-(9Z)-octadecenoyl-sn-glycero-3-phosphocholine + H2O = 1-O-hexadecyl-sn-glycero-3-phosphocholine + (9Z)-octadecenoate + H+This reaction proceeds in the forward direction.
- 1-hexadecanoyl-2-(9Z)-octadecenoyl-3-octadecanoyl-sn-glycerol + H2O = 1-hexadecanoyl-3-octadecanoyl-sn-glycerol + (9Z)-octadecenoate + H+This reaction proceeds in the forward direction.
- 1-hexadecanoyl-2-(9Z)-octadecenoyl-3-octadecanoyl-sn-glycerol + H2O = 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycerol + octadecanoate + H+This reaction proceeds in the forward direction.
- 1-hexadecanoyl-2-(9Z)-octadecenoyl-3-octadecanoyl-sn-glycerol + H2O = 2-(9Z-octadecenoyl)-3-octadecanoyl-sn-glycerol + hexadecanoate + H+This reaction proceeds in the forward direction.
- 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine + H2O = (9Z,12Z)-octadecadienoate + 1-hexadecanoyl-sn-glycero-3-phosphocholine + H+This reaction proceeds in the forward direction.
- 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine + H2O = 2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine + hexadecanoate + H+This reaction proceeds in the forward direction.
- 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phospho-(1'-sn-glycerol) + H2O = 1-hexadecanoyl-sn-glycero-3-phospho-(1'-sn-glycerol) + (9Z)-octadecenoate + H+This reaction proceeds in the forward direction.
- 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + H2O = 1-hexadecanoyl-sn-glycero-3-phosphocholine + (9Z)-octadecenoate + H+This reaction proceeds in the forward direction.
- 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphoethanolamine + H2O = 1-hexadecanoyl-sn-glycero-3-phosphoethanolamine + (9Z)-octadecenoate + H+This reaction proceeds in the forward direction.
- 1-hexadecanoyl-sn-glycero-3-phosphocholine + H2O = sn-glycerol 3-phosphocholine + hexadecanoate + H+This reaction proceeds in the forward direction.
- 1-octadecanoyl-2-(9Z,12Z)-octadecadienoyl-sn-glycerol + H2O = 1-octadecanoyl-sn-glycerol + (9Z,12Z)-octadecadienoate + H+This reaction proceeds in the forward direction.
- 2,3-di-(9Z)-octadecenoyl-sn-glycerol + H2O = 3-(9Z-octadecenoyl)-sn-glycerol + (9Z)-octadecenoate + H+This reaction proceeds in the forward direction.
- 2-(9Z-octadecenoyl)-glycerol + H2O = glycerol + (9Z)-octadecenoate + H+This reaction proceeds in the forward direction.
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | apical plasma membrane | |
Molecular Function | phospholipase activity | |
Biological Process | lipid metabolic process |
Keywords
- Molecular function
- Biological process
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended namePhospholipase B1, membrane-associated
- EC number
- Alternative names
Gene names
Organism names
- Strain
- Taxonomic lineageEukaryota > Metazoa > Chordata > Craniata > Vertebrata > Euteleostomi > Amphibia > Batrachia > Anura > Pipoidea > Pipidae > Xenopodinae > Xenopus > Silurana
Accessions
- Primary accessionA0A803KFV6
Organism-specific databases
Subcellular Location
UniProt Annotation
GO Annotation
Apical cell membrane ; Single-pass type I membrane protein
Features
Showing features for transmembrane.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Transmembrane | 1390-1416 | Helical | |||
Keywords
- Cellular component
PTM/Processing
Features
Showing features for signal, chain.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Signal | 1-22 | ||||
Chain | PRO_5030716667 | 23-1423 | Phospholipase B1, membrane-associated | ||
Keywords
- PTM
Expression
Gene expression databases
Structure
Family & Domains
Sequence similarities
Belongs to the 'GDSL' lipolytic enzyme family. Phospholipase B1 subfamily.
Keywords
- Domain
Family and domain databases
Sequence
- Sequence statusComplete
- Length1,423
- Mass (Da)158,811
- Last updated2021-06-02 v1
- MD5 Checksum08758C160347A754023B7B3E06D12241