UniProt ID: Q08C93 |
FUNCTION: Lysophosphatidylserine (LPS) lipase that mediates the hydrolysis of lysophosphatidylserine, a class of signaling lipids that regulates immunological and neurological processes (By similarity). Represents a major lysophosphatidylserine lipase in the brain, thereby playing a key role in the central nervous system (By similarity). Also able to hydrolyze oxidized phosphatidylserine; oxidized phosphatidylserine is produced in response to severe inflammatory stress and constitutes a proapoptotic 'eat me' signal. Also has monoacylglycerol (MAG) lipase activity: hydrolyzes 2- arachidonoylglycerol (2-AG), thereby acting as a regulator of endocannabinoid signaling pathways. Has a strong preference for very- long-chain lipid substrates; substrate specificity is likely due to improved catalysis and not improved substrate binding (By similarity). {ECO:0000250|UniProtKB:Q8N2K0, ECO:0000250|UniProtKB:Q99LR1}. CATALYTIC ACTIVITY: Reaction=1-(9Z-octadecenoyl)-sn-glycero-3-phospho-L-serine + H2O = (9Z)-octadecenoate + H(+) + sn-glycero-3-phospho-L-serine; Xref=Rhea:RHEA:40499, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:30823, ChEBI:CHEBI:64765, ChEBI:CHEBI:74617; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; CATALYTIC ACTIVITY: Reaction=1-(9Z-octadecenoyl)-sn-glycero-3-phospho-(1'-sn-glycerol) + H2O = (9Z)-octadecenoate + H(+) + sn-glycero-3-phospho-(1'-sn- glycerol); Xref=Rhea:RHEA:44584, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:30823, ChEBI:CHEBI:64717, ChEBI:CHEBI:72828; Evidence={ECO:0000250|UniProtKB:Q99LR1}; CATALYTIC ACTIVITY: Reaction=1-(9Z-octadecenoyl)-sn-glycero-3-phospho-(1D-myo-inositol) + H2O = (9Z)-octadecenoate + H(+) + sn-glycero-3-phospho-1D-myo- inositol; Xref=Rhea:RHEA:44588, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:30823, ChEBI:CHEBI:58444, ChEBI:CHEBI:78762; Evidence={ECO:0000250|UniProtKB:Q99LR1}; CATALYTIC ACTIVITY: Reaction=1-(9Z-octadecenoyl)-sn-glycero-3-phosphoethanolamine + H2O = (9Z)-octadecenoate + H(+) + sn-glycero-3-phosphoethanolamine; Xref=Rhea:RHEA:40895, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:30823, ChEBI:CHEBI:74971, ChEBI:CHEBI:143890; Evidence={ECO:0000250|UniProtKB:Q99LR1}; CATALYTIC ACTIVITY: Reaction=1-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + H2O = 1-(9Z- octadecenoyl)-sn-glycerol + H(+) + phosphocholine; Xref=Rhea:RHEA:41091, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:28610, ChEBI:CHEBI:75757, ChEBI:CHEBI:295975; Evidence={ECO:0000250|UniProtKB:Q99LR1}; CATALYTIC ACTIVITY: Reaction=2-(9Z-octadecenoyl)-glycerol + H2O = (9Z)-octadecenoate + glycerol + H(+); Xref=Rhea:RHEA:38491, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:17754, ChEBI:CHEBI:30823, ChEBI:CHEBI:73990; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; CATALYTIC ACTIVITY: Reaction=1-hexadecanoyl-sn-glycero-3-phospho-L-serine + H2O = H(+) + hexadecanoate + sn-glycero-3-phospho-L-serine; Xref=Rhea:RHEA:44552, ChEBI:CHEBI:7896, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:64765, ChEBI:CHEBI:75020; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; CATALYTIC ACTIVITY: Reaction=2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-glycerol + H2O = (5Z,8Z,11Z,14Z)-eicosatetraenoate + glycerol + H(+); Xref=Rhea:RHEA:26132, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:17754, ChEBI:CHEBI:32395, ChEBI:CHEBI:52392; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; CATALYTIC ACTIVITY: Reaction=Hydrolyzes glycerol monoesters of long-chain fatty acids.; EC=3.1.1.23; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; CATALYTIC ACTIVITY: Reaction=1-decanoylglycerol + H2O = decanoate + glycerol + H(+); Xref=Rhea:RHEA:44320, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:17754, ChEBI:CHEBI:27689, ChEBI:CHEBI:75547; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; CATALYTIC ACTIVITY: Reaction=1-dodecanoylglycerol + H2O = dodecanoate + glycerol + H(+); Xref=Rhea:RHEA:44316, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:17754, ChEBI:CHEBI:18262, ChEBI:CHEBI:75539; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; CATALYTIC ACTIVITY: Reaction=1-tetradecanoylglycerol + H2O = glycerol + H(+) + tetradecanoate; Xref=Rhea:RHEA:44312, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:17754, ChEBI:CHEBI:30807, ChEBI:CHEBI:75562; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; CATALYTIC ACTIVITY: Reaction=2-hexadecanoylglycerol + H2O = glycerol + H(+) + hexadecanoate; Xref=Rhea:RHEA:39963, ChEBI:CHEBI:7896, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:17754, ChEBI:CHEBI:75455; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; CATALYTIC ACTIVITY: Reaction=1-(9Z-octadecenoyl)-glycerol + H2O = (9Z)-octadecenoate + glycerol + H(+); Xref=Rhea:RHEA:38487, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:17754, ChEBI:CHEBI:30823, ChEBI:CHEBI:75342; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; CATALYTIC ACTIVITY: Reaction=2-(9Z,12Z-octadecadienoyl)-glycerol + H2O = (9Z,12Z)- octadecadienoate + glycerol + H(+); Xref=Rhea:RHEA:44732, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:17754, ChEBI:CHEBI:30245, ChEBI:CHEBI:75457; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; CATALYTIC ACTIVITY: Reaction=1-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-glycerol + H2O = (5Z,8Z,11Z,14Z)-eicosatetraenoate + glycerol + H(+); Xref=Rhea:RHEA:44728, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:17754, ChEBI:CHEBI:32395, ChEBI:CHEBI:75612; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; CATALYTIC ACTIVITY: Reaction=1-(9Z,12Z-octadecadienoyl)-glycerol + H2O = (9Z,12Z)- octadecadienoate + glycerol + H(+); Xref=Rhea:RHEA:48428, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:17754, ChEBI:CHEBI:30245, ChEBI:CHEBI:75568; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; CATALYTIC ACTIVITY: Reaction=1-hexadecanoylglycerol + H2O = glycerol + H(+) + hexadecanoate; Xref=Rhea:RHEA:39959, ChEBI:CHEBI:7896, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:17754, ChEBI:CHEBI:69081; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; CATALYTIC ACTIVITY: Reaction=1-octadecanoylglycerol + H2O = glycerol + H(+) + octadecanoate; Xref=Rhea:RHEA:38363, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:17754, ChEBI:CHEBI:25629, ChEBI:CHEBI:75555; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; CATALYTIC ACTIVITY: Reaction=1-octadecanoyl-2-(9,10-epoxyoctadecanoyl)-sn-glycero-3- phospho-L-serine + H2O = 1-octadecanoyl-sn-glycero-3-phosphoserine + 9,10-epoxyoctadecanoate + H(+); Xref=Rhea:RHEA:59364, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:84467, ChEBI:CHEBI:85195, ChEBI:CHEBI:143087; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; CATALYTIC ACTIVITY: Reaction=1-octadecanoyl-2-(10-hydroxyoctadecanoyl)-sn-glycero-3- phospho-L-serine + H2O = 1-octadecanoyl-sn-glycero-3-phosphoserine + 10-hydroxyoctadecanoate + H(+); Xref=Rhea:RHEA:59368, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:84467, ChEBI:CHEBI:143088, ChEBI:CHEBI:143089; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; CATALYTIC ACTIVITY: Reaction=1-hexadecanoyl-2-(10-hydroxyoctadecanoyl)-sn-glycero-3- phospho-L-serine + H2O = 1-hexadecanoyl-sn-glycero-3-phospho-L-serine + 10-hydroxyoctadecanoate + H(+); Xref=Rhea:RHEA:59372, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:75020, ChEBI:CHEBI:143089, ChEBI:CHEBI:143094; Evidence={ECO:0000250|UniProtKB:Q8N2K0}; SUBCELLULAR LOCATION: Endoplasmic reticulum membrane {ECO:0000250|UniProtKB:Q8N2K0}; Single-pass membrane protein {ECO:0000255}. TISSUE SPECIFICITY: Ubiquitously expressed in adult tissues. {ECO:0000269|PubMed:27890673}. DEVELOPMENTAL STAGE: Expressed both maternally and zygotically. {ECO:0000269|PubMed:27890673}. DISRUPTION PHENOTYPE: Morpholino knockdown of the protein causes myelination defects and functional deficits, characterized by progressive ataxia and motor skill impairment (PubMed:27890673). A disruption of retina architecture and retinotectal projections is observed, together with an inhibition of lens clarification and a low number of mechanosensory hair cells in the inner ear and lateral line system (PubMed:27890673). {ECO:0000269|PubMed:27890673}. SIMILARITY: Belongs to the serine esterase family. {ECO:0000305}. |
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