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lysophosphatidylcholine + H2O
lysophosphatidic acid + choline
-
-
-
?
1-alkyl-sn-glycero-3-phospho-L-serine + H2O
1-alkyl-sn-glycerol 3-phosphate + L-serine
-
-
-
-
?
1-alkyl-sn-glycero-3-phosphocholine + H2O
1-alkyl-sn-glycero-3-phosphate + choline
-
-
-
?
1-alkyl-sn-glycero-3-phosphocholine + H2O
1-alkyl-sn-glycerol 3-phosphate + choline
-
-
-
-
?
1-alkyl-sn-glycero-3-phosphoethanolamine + H2O
1-alkyl-sn-glycero-3-phosphate + ethanolamine
1-alkyl-sn-glycero-3-phosphoethanolamine + H2O
1-alkyl-sn-glycerol 3-phosphate + ethanolamine
-
-
-
-
?
1-heptadecanoyl-sn-glycero-3-phosphocholine + H2O
1-heptadecanoyl-sn-glycerol 3-phosphate + choline
-
-
-
-
?
1-linoleoyl-2-lyso-glycerophoshorylcholine + H2O
1-linoleoyl-sn-glycerol-3-phosphate + choline
-
-
-
-
?
1-linoleoyl-sn-glycero-3-phosphocholine + H2O
1-linoleoyl-sn-glycerol 3-phosphate + choline
-
-
-
-
?
1-O-alkyl-2-lyso-sn-glycero-3-phosphocholine + H2O
1-O-alkyl-2-lyso-sn-glycero-3-phosphate + choline
1-O-alkyl-2-lyso-sn-glycero-3-phosphoethanolamine + H2O
1-O-alkyl-2-lyso-sn-glycero-3-phosphate + ethanolamine
-
the microsomal enzyme
the microsomal enzyme
?
1-O-hexadecyl-2-lyso-glycerophosphorylcholine + H2O
1-O-hexadecyl-sn-glycerol-3-phosphate + choline
-
lysoPAF (alkyl-lysophosphatidylcholine), lysoPLD shows higher activity towards lysoPAF
-
-
?
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphocholine + H2O
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphate + choline
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphoethanolamine + H2O
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphate + ethanolamine
1-O-octadecyl-2-lyso-sn-glycero-3-phosphocholine + H2O
1-O-octadecyl-2-lyso-sn-glycero-3-phosphate + choline
-
-
-
?
1-palmitoyl-2-lyso-glycerophoshorylcholine + H2O
1-palmitoyl-sn-glycerol-3-phosphate + choline
-
-
-
-
?
1-palmitoyl-sn-glycero-3-phosphocholine + H2O
1-palmitoyl-sn-glycerol 3-phosphate + choline
-
-
-
-
?
1-stearoyl-2-lyso-glycerophoshorylcholine + H2O
1-stearoyl-sn-glycerol-3-phosphate + choline
-
-
-
-
?
4-nitrophenyl-TMP + H2O
4-nitrophenol + TMP
-
-
-
-
?
lysophosphatidylcholine + H2O
lysophosphatic acid + choline
-
LPC, purified enzyme hydrolyzes saturated forms of lysophosphatidylcholine more robustly than unsaturated forms
-
-
?
lysophosphatidylcholine + H2O
lysophosphatidic acid + choline
-
-
-
-
?
platelet-activating factor + H2O
? + choline
-
PAF, same extent as palmityl-lysophosphatidylcholine
-
-
?
sphingosylphosphorylcholine + H2O
sphingosine-1-phosphate + choline
-
-
-
-
?
additional information
?
-
1-alkyl-sn-glycero-3-phosphoethanolamine + H2O
1-alkyl-sn-glycero-3-phosphate + ethanolamine
-
-
-
?
1-alkyl-sn-glycero-3-phosphoethanolamine + H2O
1-alkyl-sn-glycero-3-phosphate + ethanolamine
-
-
-
?
1-O-alkyl-2-lyso-sn-glycero-3-phosphocholine + H2O
1-O-alkyl-2-lyso-sn-glycero-3-phosphate + choline
-
-
-
?
1-O-alkyl-2-lyso-sn-glycero-3-phosphocholine + H2O
1-O-alkyl-2-lyso-sn-glycero-3-phosphate + choline
-
may play a role in the metabolism of platelet-activating factor
-
?
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphocholine + H2O
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphate + choline
-
-
-
?
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphocholine + H2O
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphate + choline
-
-
-
?
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphocholine + H2O
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphate + choline
-
-
-
?
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphocholine + H2O
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphate + choline
-
-
-
?
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphocholine + H2O
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphate + choline
-
-
-
?
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphocholine + H2O
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphate + choline
-
-
-
?
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphocholine + H2O
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphate + choline
-
-
-
?
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphocholine + H2O
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphate + choline
-
-
-
?
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphoethanolamine + H2O
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphate + ethanolamine
-
-
-
?
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphoethanolamine + H2O
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphate + ethanolamine
-
-
-
?
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphoethanolamine + H2O
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphate + ethanolamine
-
-
-
?
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphoethanolamine + H2O
1-O-hexadecyl-2-lyso-sn-glycero-3-phosphate + ethanolamine
-
-
-
?
additional information
?
-
binding of ATX to activated platelets and lymphocytes in an integrin-dependent manner mediated by the consecutive cysteine-rich somatomedin-B-like, SMB, domains
-
-
?
additional information
?
-
-
no hydrolysis of 1-acyl-2-lyso-sn-glycero-3-phosphoethanolamine or 1-acyl-2-lyso-sn-glycero-3-phosphocholine
-
-
?
additional information
?
-
-
the microsomal enzymes prefer alkyl-lysophospholipids, the extracellular enzyme prefer acyl-phospholipids, but can use alkyl-lysophospholipids
-
?
additional information
?
-
-
the product lysophosphatidic acid mediates multiple biological functions
-
?
additional information
?
-
-
heterotrimeric G protein subunits Galphaq and Gbeta1 have lysophospholipase D activity, choline production from lysoPAF by the purified FLAG-tagged Galphaq, overview. K52A, T186A, D205A, G48A and Q209L mutant forms of Galphaq show a significant reduction of lysoPLD activity, whereas G48V does not. The decrease of lysoPLD activity of G48A and Q209L is low
-
-
?
additional information
?
-
-
protein-protein interaction with proteins via the enzyme's SMB1 domain, which binds to the PDE domain. The enzyme binds to activated lymphocytes possibly involving an enzyme lymphocyte- and alpha4beta1-specific 458LDV460 motif. Autotaxin (ATX or ENPP2) is an ectonucleotide pyrophosphatase/phosphodiesterase that functions as a secreted lysophospholipase D to produce the multifunctional lipid mediator lysophosphatidic acid from more complex lysophospholipids
-
-
?
additional information
?
-
-
the enzyme can produce bioactive lysophosphatidic acid from diverse lysophospholipid substrates, particularly lysophosphatidylcholine, the most abundant lysophospholipid in the circulation, but also from lysophosphatidylserine and lysophosphatidylethanolamine. It does not discriminate between phospholipid headgroups
-
-
?
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evolution
-
the enzyme belongs to the ENPP family, but ATX/ENPP2 is a unique lysoPLD with no functional redundancy within the ENPP family, overview. The enzyme and its ENPP family members can be divided into two main subgroups, namely ENPP1-3 and ENPP4-7. ATX/ENPP2 and its closest relatives, ENPP1 and ENPP3, have two N-terminal somatomedin B (SMB)-like domains, a central phosphodiesterase (PDE) domain and a C-terminal nuclease (NUC)-like domain. The second subgroup (ENPP4-7) has only the PDE domain in common. ATX/NPP2 is a secreted protein, while the other ENPPs are transmembrane proteins, either type-I (ENPP4-7) or type-II (ENPP1-3)
malfunction
-
fasting decreases enzyme activity. Nutritional deficiency of 18 : 2- and 18 : 1-containing phosphatidylcholines causes selective reduction of corresponding unsaturated lysophosphatidylcholines relative to other species in the blood circulation. Prolonged fasting of rats causes a greater decrease in the level of lysophosphatidylcholine in the liver than that of phosphatidylethanolamine
metabolism
-
in contrast to the decreased plasma enzyme activity in fasted rats, lysophosphatidic acid production from lysophosphatidylcholine by the enzyme activity progressively increases
physiological function
ATX promotes localized LPA signaling
physiological function
autotaxin exhibits lysophospholipase D activity, hydrolyzing lysophosphatidylcholine to the signalling lipid lysophosphatidic acid
physiological function
-
autotoxin promotes metastasis and tumor growth
physiological function
-
the enzyme is the major lysophosphatidic acid-producing enzyme being involved in a great diversity of (patho)physiological processes. Enzyme-produced lysophosphatidic acid acts on distinct G protein-coupled receptors thereby activating multiple signaling cascades and cellular responses. The ATX-LPA signaling axis is implicated in a remarkably wide variety of physiological and pathological processes, ranging from vascular and neural development to lymphocyte homing, fibrosis and cancer
additional information
structural basis of substrate discrimination and integrin binding by autotaxin, ATX, that interacts with cell-surface integrins via its N-terminal somatomedin-B-like domains, using an atypical mechanism, overview
additional information
-
the predicted nucleotide phosphate and Mg2+ binding sites of the protein are important for lysoPLD enzymatic activity
additional information
-
enzyme crystal structure analysis, phosphodiesterase domain and substrate binding pocket, overview, the enzyme structure is a tunnel that spans from the active site location to the opposite side of ATX. It is formed from the interaction between the SMB1 and the PDE domain. The tunnel may function as an lysophosphatidic acid binding site and, by inference, a product release site
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A218V
site-directed mutagenesis, a hydrophobic binding pocket mutant, the mutant shows reduced lysoPLD activity levels compared to the wild-type
A305E
site-directed mutagenesis, a hydrophobic binding pocket mutant, the mutant shows reduced lysoPLD activity levels compared to the wild-type
F211A
site-directed mutagenesis, a hydrophobic binding pocket mutant, the mutant shows reduced lysoPLD activity levels compared to the wild-type
F274E
site-directed mutagenesis, a hydrophobic binding pocket mutant, the mutant shows reduced lysoPLD activity levels compared to the wild-type
F275Q
site-directed mutagenesis, a hydrophobic binding pocket mutant, the mutant shows reduced lysoPLD activity levels compared to the wild-type
L214H
site-directed mutagenesis, a hydrophobic binding pocket mutant, the mutant shows reduced lysoPLD activity levels compared to the wild-type
N398A
NPP2 site-directed mutagenesis
N398A/N410A/N524A/N806A
NPP2 mutant
N410A
increased mobility during SDS-PAGE is only noted following the mutation of sites N53A, N410A, and N524A, indicating that these are the only true glycosylation sites. Mutation of each of the corresponding asparagines into an alanine and examination of the effects of these mutations on the mobility of NPP2 during SDS-PAGE and on its enzymatic activities. Efficient chemoattractant for NIH-3T3 cells
N524A
mutation of N524A causes an accumulation of NPP2 in the cells, suggesting that the glycosylation of Asn-524 also contributes to the maturation and/or trafficking of NPP2. Only the mutation of N524A abolishes the nucleotide and lysophospholipid phosphodiesterase activities of NPP2, showing that the glycosylation of Asn-524 is required for the expression of catalytic activity. Increased mobility during SDS-PAGE is only noted following the mutation of sites N53A, N410A, and N524A, indicating that these are the only true glycosylation sites. Mutation of each of the corresponding asparagines into an alanine and examinations of the effects of these mutations on the mobility of NPP2 during SDS-PAGE and on its enzymatic activities. Does not measurably stimulate cell motility
N53A
increased mobility during SDS-PAGE is only noted following the mutation of sites N53A, N410A, and N524A, indicating that these are the only true glycosylation sites. Mutation of each of the corresponding asparagines into an alanine and examination of the effects of these mutations on the mobility of NPP2 during SDS-PAGE and on its enzymatic activities. Efficient chemoattractant for NIH-3T3 cells
N53A/N398A/N410A/N524A
NPP2 mutant
N53A/N398A/N410A/N524A/N806A
NPP2 with sites 15 mutated, does not measurably stimulate cell motility
N53A/N398A/N410A/N806A
NPP2 with sites 1, 2, 3 and 5 mutated,only glycosylated on Asn-524
N53A/N398A/N524A/N806A
NPP2 mutant
N53A/N410A/N524A/N806A
NPP2 mutant
N806A
NPP2, site-directed mutagenesis not appendant on catalytic domain
S170E
site-directed mutagenesis, a hydrophobic binding pocket mutant, the mutant shows reduced lysoPLD activity levels compared to the wild-type
Y307Q
site-directed mutagenesis, a hydrophobic binding pocket mutant, the mutant shows reduced lysoPLD activity levels compared to the wild-type
C194A
-
the mutant shows a specific activity similar to the wild type enzyme
C366A
-
the mutant shows a specific activity similar to the wild type enzyme
C468A
-
the mutant shows a specific activity similar to the wild type enzyme
C513A
-
the mutant shows a specific activity similar to the wild type enzyme
C651A
-
the mutant shows a specific activity similar to the wild type enzyme
C666A
-
the mutant shows a specific activity similar to the wild type enzyme
C774A
-
the mutant shows a specific activity similar to the wild type enzyme
C784A
-
the mutant shows a specific activity similar to the wild type enzyme
additional information
five potential N-glycosylation sites of NPP2, Asn-53, Asn-398, Asn-410, Asn-524, and Asn-806. Mutagenesis and deglycosylation experiments reveal that only the glycosylation of Asn-524 is essential for the expression of the catalytic and motility-stimulating activities of NPP2
additional information
-
NPP2-(1-594) lacking the nuclease-like domain does not exhibit any lysophospholipase-D or nucleotide phosphodiesterase activities
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Fernandez-Gallardo, S.; Gijon, M.A.; Gracia, M.D.C.; Cano, E.; Sanchez Crespo, M.
Biosynthesis of platelet-activating factor in glandular gastric mucosa. Evidence for the involvement of the de novo pathway and modulation by fatty acids
Biochem. J.
254
707-714
1988
Rattus norvegicus
brenda
Tokumura, A.; Harada, K.; Fukazawa, K.; Tsukatani, H.
Involvement of lysophospholipase D in the production of lysophosphatidic acid in rat plasma
Biochim. Biophys. Acta
875
31-38
1986
Rattus norvegicus
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Wykle, R.L.; Kraemer, W.F.; Schremmer, J.M.
Specificity of lysophospholipase D
Biochim. Biophys. Acta
619
58-67
1980
Rattus norvegicus
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Wykle, R.L.; Kraemer, W.F.; Schremmer, J.M.
Studies of lysophospholipase D of rat liver and other tissues
Arch. Biochem. Biophys.
184
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1977
Rattus norvegicus
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Wykle, R.L.; Schremmer, J.M.
A lysophospholipase D pathway in the metabolism of ether-linked lipids in brain microsomes
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249
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1974
Rattus norvegicus
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Tokumura, A.; Nishioka, Y.; Yoshimoto, O.; Shinomiya, J.; Fukazawa, K.
Substrate specificity of lysophospholipase D which produces bioactive lysophosphatidic acids in rat plasma
Biochim. Biophys. Acta
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235-245
1999
Rattus norvegicus
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Furukawa, M.; Muguruma, k.; Frenkel, R.A.; Johnston, J.M.
Metabolic fate of platelet-activating factor in the rat enterocyte: the role of a specifiv lysophospholipase D
Arch. Biochem. Biophys.
319
274-280
1995
Rattus norvegicus
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Wykle, L.; Strum, J.C.
Lysophospholipase D
Methods Enzymol.
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1991
Rattus norvegicus
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Xie, Y.; Meier, K.E.
Lysophospholipase D and its role in LPA production
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16
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2004
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Koike, S.; Keino-Masu, K.; Ohto, T.; Masu, M.
The N-terminal hydrophobic sequence of autotaxin (ENPP2) functions as a signal peptide
Genes Cells
11
133-142
2006
Rattus norvegicus
brenda
Jansen, S.; Stefan, C.; Creemers, J.W.; Waelkens, E.; Van Eynde, A.; Stalmans, W.; Bollen, M.
Proteolytic maturation and activation of autotaxin (NPP2), a secreted metastasis-enhancing lysophospholipase D
J. Cell Sci.
118
3081-3089
2005
Rattus norvegicus
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Sugimoto, S.; Sugimoto, H.; Aoyama, C.; Aso, C.; Mori, M.; Izumi, T.
Purification and characterization of lysophospholipase D from rat brain
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2006
Rattus norvegicus
brenda
Savaskan, N.E.; Rocha, L.; Kotter, M.R.; Baer, A.; Lubec, G.; van Meeteren, L.A.; Kishi, Y.; Aoki, J.; Moolenaar, W.H.; Nitsch, R.; Braeuer, A.U.
Autotaxin (NPP-2) in the brain: cell type-specific expression and regulation during development and after neurotrauma
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64
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2007
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Jansen, S.; Callewaert, N.; Dewerte, I.; Andries, M.; Ceulemans, H.; Bollen, M.
An essential oligomannosidic glycan chain in the catalytic domain of autotaxin, a secreted lysophospholipase-D
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282
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2007
Rattus norvegicus (Q64610)
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Jansen, S.; Andries, M.; Vekemans, K.; Vanbilloen, H.; Verbruggen, A.; Bollen, M.
Rapid clearance of the circulating metastatic factor autotaxin by the scavenger receptors of liver sinusoidal endothelial cells
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284
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Jansen, S.; Andries, M.; Derua, R.; Waelkens, E.; Bollen, M.
Domain interplay mediated by an essential disulfide linkage is critical for the activity and secretion of the metastasis-promoting enzyme autotaxin
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Mammalian cell expression, purification, crystallization and microcrystal data collection of autotaxin/ENPP2, a secreted mammalian glycoprotein
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Aoyama, C.; Sugimoto, H.; Ando, H.; Yamashita, S.; Horibata, Y.; Sugimoto, S.; Satou, M.
The heterotrimeric G protein subunits Galphaq and Gbeta1 have lysophospholipase D activity
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