Enzymes
| UniProtKB help_outline | 55,577 proteins |
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- Name help_outline a CDP-1,2-diacyl-sn-glycerol Identifier CHEBI:58332 Charge -2 Formula C14H17N3O15P2R2 SMILEShelp_outline Nc1ccn([C@@H]2O[C@H](COP([O-])(=O)OP([O-])(=O)OC[C@@H](COC([*])=O)OC([*])=O)[C@@H](O)[C@H]2O)c(=O)n1 2D coordinates Mol file for the small molecule Search links Involved in 19 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline sn-glycerol 3-phosphate Identifier CHEBI:57597 (Beilstein: 6115564) help_outline Charge -2 Formula C3H7O6P InChIKeyhelp_outline AWUCVROLDVIAJX-GSVOUGTGSA-L SMILEShelp_outline OC[C@@H](O)COP([O-])([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 52 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline 1,2-diacyl-sn-glycero-3-phospho-(1ʼ-sn-glycero-3ʼ-phosphate) Identifier CHEBI:60110 Charge -3 Formula C8H11O13P2R2 SMILEShelp_outline C(=O)(OC[C@H](COP(=O)(OC[C@H](COP(=O)([O-])[O-])O)[O-])OC(*)=O)* 2D coordinates Mol file for the small molecule Search links Involved in 4 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline CMP Identifier CHEBI:60377 Charge -2 Formula C9H12N3O8P InChIKeyhelp_outline IERHLVCPSMICTF-XVFCMESISA-L SMILEShelp_outline Nc1ccn([C@@H]2O[C@H](COP([O-])([O-])=O)[C@@H](O)[C@H]2O)c(=O)n1 2D coordinates Mol file for the small molecule Search links Involved in 161 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 9,331 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:12593 | RHEA:12594 | RHEA:12595 | RHEA:12596 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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CMP-dependent incorporation of [14C]Glycerol 3-phosphate into phosphatidylglycerol and phosphatidylglycerol phosphate by rabbit lung microsomes.
Bleasdale J.E., Johnston J.M.
Rabbit lung microsomes were found to catalyze CMP-dependent incorporation of [14C]glycerol 3-phosphate into a total lipid extract. The radioactively labeled products in the lipid extract were identified as phosphatidylglycerol and phosphatidylglycerol phosphate. CMP-dependent incorporation of [14C ... >> More
Rabbit lung microsomes were found to catalyze CMP-dependent incorporation of [14C]glycerol 3-phosphate into a total lipid extract. The radioactively labeled products in the lipid extract were identified as phosphatidylglycerol and phosphatidylglycerol phosphate. CMP-dependent incorporation of [14C]glycerol 3-phosphate by lung microsomes proceeded optimally at pH 7.4 and required Mn2+. The apparent Km value for CMP in this reaction was calculated to be 0.19 mM. No other cytidine nucleotide could substitute completely for CMP in supporting [14C]glycerol 3-phosphate incorporation into lipid. Cytosine-beta-D-arabinofuranoside-5'-monophosphate-dependent incorporation of [14C]glycerol 3-phosphate was observed at pH 8.5 but not at pH 6.8 CMP-dependent incorporation of [14C]glycerol 3-phosphate by microsomes was inhibited by inositol. The optimal in vitro rates of CMP-dependent and CDP diacylglycerol-dependent incorporation of [14C]glycerol 3-phosphate into lipid were similar (approximately 1 nmol . mg-1 protein . h-1) and were not additive. Both CMP -dependent and CDP diacylglycerol-dependent incorporation of [14C]glycerol 3-phosphate by lung microsomes appeared to involve CDPdiacylglycerol:glycerol-3-phosphate phosphatidyltransferase. However, the specific activity of this enzyme in a particular subcellular fraction did not relate directly in the extent of CMP-dependent [14C]glycerol 3-phosphate incorporation in that fraction. Preincubation of lung microsomes with 5 mM CMP plus 3 mM phosphatidylinositol increased CMP-dependent incorporation of [14C]glycerol 3-phosphate. When lung microsomes were depleted specifically of phosphatidylinositol by incubating with a phosphatidylinositol-specific phospholipase C, CMP-dependent incorporation was diminished. The Mn2+ requirement for CMP-dependent incorporation of [14C] glycerol 3-phosphate, its phosphatidylinositol requirement and its inhibition by Triton X-100 (0.2%) were not features shared by CDPdiacylglycerol-dependent incorporation of [14C]glycerol 3-phosphate but were characteristics of the reverse reaction catalyzed by CDPdiacylglycerol: inositol phosphatidyltransferase. Together with the previous finding of a developmental increase in the CMP content of fetal rabbit lung, these observations are consistent with a role for CMP in the regulation of the phosphatidylinositol and phosphatidylglycerol content of lung surfactant during lung maturation. << Less