Enzymes
UniProtKB help_outline | 4 proteins |
Reaction participants Show >> << Hide
- Name help_outline 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphate Identifier CHEBI:64839 Charge -2 Formula C37H69O8P InChIKeyhelp_outline OPVZUEPSMJNLOM-QEJMHMKOSA-L SMILEShelp_outline [H][C@@](COC(=O)CCCCCCCCCCCCCCC)(COP([O-])([O-])=O)OC(=O)CCCCCCC\C=C/CCCCCCCC 2D coordinates Mol file for the small molecule Search links Involved in 6 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 (9Z)-octadecenoate Identifier CHEBI:30823 (Beilstein: 1913148; CAS: 115-06-0) help_outline Charge -1 Formula C18H33O2 InChIKeyhelp_outline ZQPPMHVWECSIRJ-KTKRTIGZSA-M SMILEShelp_outline CCCCCCCC\C=C/CCCCCCCC([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 114 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline 1-hexadecanoyl-sn-glycero-3-phosphate Identifier CHEBI:57518 Charge -2 Formula C19H37O7P InChIKeyhelp_outline YNDYKPRNFWPPFU-GOSISDBHSA-L SMILEShelp_outline CCCCCCCCCCCCCCCC(=O)OC[C@@H](O)COP([O-])([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 22 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
Cross-references
RHEA:63996 | RHEA:63997 | RHEA:63998 | RHEA:63999 | |
---|---|---|---|---|
Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
UniProtKB help_outline |
|
Publications
-
Interfacial kinetic and binding properties of the complete set of human and mouse groups I, II, V, X, and XII secreted phospholipases A2.
Singer A.G., Ghomashchi F., Le Calvez C., Bollinger J., Bezzine S., Rouault M., Sadilek M., Nguyen E., Lazdunski M., Lambeau G., Gelb M.H.
Expression of the full set of human and mouse groups I, II, V, X, and XII secreted phospholipases A(2) (sPLA(2)s) in Escherichia coli and insect cells has provided pure recombinant enzymes for detailed comparative interfacial kinetic and binding studies. The set of mammalian sPLA(2)s display drama ... >> More
Expression of the full set of human and mouse groups I, II, V, X, and XII secreted phospholipases A(2) (sPLA(2)s) in Escherichia coli and insect cells has provided pure recombinant enzymes for detailed comparative interfacial kinetic and binding studies. The set of mammalian sPLA(2)s display dramatically different sensitivity to dithiothreitol. The specific activity for the hydrolysis of vesicles of differing phospholipid composition by these enzymes varies by up to 4 orders of magnitude, and yet all enzymes display similar catalytic site specificity toward phospholipids with different polar head groups. Discrimination between sn-2 polyunsaturated versus saturated fatty acyl chains is <6-fold. These enzymes display apparent dissociation constants for activation by calcium in the 1-225 microm range, depending on the phospholipid substrate. Analysis of the inhibition by a set of 12 active site-directed, competitive inhibitors reveals a large variation in the potency among the mammalian sPLA(2)s, with Me-Indoxam being the most generally potent sPLA(2) inhibitor. A dramatic correlation exists between the ability of the sPLA(2)s to hydrolyze phosphatidylcholine-rich vesicles efficiently in vitro and the ability to release arachidonic acid when added exogenously to mammalian cells; the group V and X sPLA(2)s are uniquely efficient in this regard. << Less