Enzymes
| UniProtKB help_outline | 1,301 proteins |
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- Name help_outline glycero-2-phosphocholine Identifier CHEBI:144950 Charge 0 Formula C8H20NO6P InChIKeyhelp_outline DQBGWLUPOYEQQT-UHFFFAOYSA-N SMILEShelp_outline P(OC(CO)CO)(=O)(OCC[N+](C)(C)C)[O-] 2D coordinates Mol file for the small molecule Search links Involved in 1 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H2O Identifier CHEBI:15377 (Beilstein: 3587155; CAS: 7732-18-5) help_outline Charge 0 Formula H2O InChIKeyhelp_outline XLYOFNOQVPJJNP-UHFFFAOYSA-N SMILEShelp_outline [H]O[H] 2D coordinates Mol file for the small molecule Search links Involved in 6,048 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline glycerol Identifier CHEBI:17754 (Beilstein: 635685; CAS: 56-81-5) help_outline Charge 0 Formula C3H8O3 InChIKeyhelp_outline PEDCQBHIVMGVHV-UHFFFAOYSA-N SMILEShelp_outline OCC(O)CO 2D coordinates Mol file for the small molecule Search links Involved in 74 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H+ Identifier CHEBI:15378 Charge 1 Formula H InChIKeyhelp_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILEShelp_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 9,176 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline phosphocholine Identifier CHEBI:295975 Charge -1 Formula C5H13NO4P InChIKeyhelp_outline YHHSONZFOIEMCP-UHFFFAOYSA-M SMILEShelp_outline C[N+](C)(C)CCOP([O-])([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 33 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:61684 | RHEA:61685 | RHEA:61686 | RHEA:61687 | |
|---|---|---|---|---|
| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
| UniProtKB help_outline |
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Publications
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Structure and biological function of ENPP6, a choline-specific glycerophosphodiester-phosphodiesterase.
Morita J., Kano K., Kato K., Takita H., Sakagami H., Yamamoto Y., Mihara E., Ueda H., Sato T., Tokuyama H., Arai H., Asou H., Takagi J., Ishitani R., Nishimasu H., Nureki O., Aoki J.
Choline is an essential nutrient for all living cells and is produced extracellularly by sequential degradation of phosphatidylcholine (PC). However, little is known about how choline is produced extracellularly. Here, we report that ENPP6, a choline-specific phosphodiesterase, hydrolyzes glycerop ... >> More
Choline is an essential nutrient for all living cells and is produced extracellularly by sequential degradation of phosphatidylcholine (PC). However, little is known about how choline is produced extracellularly. Here, we report that ENPP6, a choline-specific phosphodiesterase, hydrolyzes glycerophosphocholine (GPC), a degradation product of PC, as a physiological substrate and participates in choline metabolism. ENPP6 is highly expressed in liver sinusoidal endothelial cells and developing oligodendrocytes, which actively incorporate choline and synthesize PC. ENPP6-deficient mice exhibited fatty liver and hypomyelination, well known choline-deficient phenotypes. The choline moiety of GPC was incorporated into PC in an ENPP6-dependent manner both in vivo and in vitro. The crystal structure of ENPP6 in complex with phosphocholine revealed that the choline moiety of the phosphocholine is recognized by a choline-binding pocket formed by conserved aromatic and acidic residues. The present study provides the molecular basis for ENPP6-mediated choline metabolism at atomic, cellular and tissue levels. << Less