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- Name help_outline a 2,6-O-bis(α-D-mannopyranosyl)-1-phosphatidyl-1D-myo-inositol Identifier CHEBI:136624 Charge -1 Formula C23H36O23PR2 SMILEShelp_outline [C@@H]1([C@@H]([C@@H]([C@@H]([C@H]([C@@H]1O)O)O)O[C@@H]2[C@H]([C@H]([C@@H]([C@H](O2)CO)O)O)O)OP(OC[C@@H](COC(=O)*)OC(=O)*)(=O)[O-])O[C@@H]3[C@H]([C@H]([C@@H]([C@H](O3)CO)O)O)O 2D coordinates Mol file for the small molecule Search links Involved in 2 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline an acyl-CoA Identifier CHEBI:58342 Charge -4 Formula C22H31N7O17P3SR SMILEShelp_outline CC(C)(COP([O-])(=O)OP([O-])(=O)OC[C@H]1O[C@H]([C@H](O)[C@@H]1OP([O-])([O-])=O)n1cnc2c(N)ncnc12)[C@@H](O)C(=O)NCCC(=O)NCCSC([*])=O 2D coordinates Mol file for the small molecule Search links Involved in 1,973 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline 2-O-(α-D-mannosyl)-6-O-(6-O-acyl-α-D-mannosyl)-1-phosphatidyl-1D-myo-inositol Identifier CHEBI:136625 Charge -1 Formula C24H35O24PR3 SMILEShelp_outline [C@@H]1([C@@H]([C@@H]([C@@H]([C@H]([C@@H]1O)O)O)O[C@@H]2[C@H]([C@H]([C@@H]([C@H](O2)COC(=O)*)O)O)O)OP(OC[C@@H](COC(=O)*)OC(=O)*)(=O)[O-])O[C@@H]3[C@H]([C@H]([C@@H]([C@H](O3)CO)O)O)O 2D coordinates Mol file for the small molecule Search links Involved in 2 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline CoA Identifier CHEBI:57287 (Beilstein: 11604429) help_outline Charge -4 Formula C21H32N7O16P3S InChIKeyhelp_outline RGJOEKWQDUBAIZ-IBOSZNHHSA-J SMILEShelp_outline CC(C)(COP([O-])(=O)OP([O-])(=O)OC[C@H]1O[C@H]([C@H](O)[C@@H]1OP([O-])([O-])=O)n1cnc2c(N)ncnc12)[C@@H](O)C(=O)NCCC(=O)NCCS 2D coordinates Mol file for the small molecule Search links Involved in 1,468 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:52436 | RHEA:52437 | RHEA:52438 | RHEA:52439 | |
|---|---|---|---|---|
| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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Identification of the required acyltransferase step in the biosynthesis of the phosphatidylinositol mannosides of mycobacterium species.
Kordulakova J., Gilleron M., Puzo G., Brennan P.J., Gicquel B., Mikusova K., Jackson M.
Fatty acyl functions of the glycosylated phosphatidylinositol (GPI) anchors of the phosphatidylinositol mannosides (PIM), lipomannan (LM), and lipoarabinomannan (LAM) of mycobacteria play a critical role in both the physical properties and biological activities of these molecules. In a search for ... >> More
Fatty acyl functions of the glycosylated phosphatidylinositol (GPI) anchors of the phosphatidylinositol mannosides (PIM), lipomannan (LM), and lipoarabinomannan (LAM) of mycobacteria play a critical role in both the physical properties and biological activities of these molecules. In a search for the acyltransferases that acylate the GPI anchors of PIM, LM, and LAM, we examined the function of the mycobacterial Rv2611c gene that encodes a putative acyltransferase involved in the early steps of phosphatidylinositol mannoside synthesis. A Rv2611c mutant of Mycobacterium smegmatis was constructed which exhibited severe growth defects and contained an increased amount of phosphatidylinositol mono- and di-mannosides and a decreased amount of acylated phosphatidylinositol di-mannosides compared with the wild-type parental strain. In cell-free assays, extracts from M. smegmatis overexpressing the M. tuberculosis Rv2611c gene incorporated [14C]palmitate into acylated phosphatidylinositol mono- and di-mannosides, and transferred cold endogenous fatty acids onto 14C-labeled phosphatidylinositol mono- and di-mannosides more efficiently than extracts from the wild-type strain. Cell-free extracts from the Rv2611c mutant of M. smegmatis were greatly impaired in these respects. This work provides evidence that Rv2611c is the acyltransferase that catalyzes the acylation of the 6-position of the mannose residue linked to position 2 of myo-inositol in phosphatidylinositol mono- and di-mannosides, with the mono-mannosylated lipid acceptor being the primary substrate of the enzyme. We also provide the first evidence that two distinct pathways lead to the formation of acylated PIM2 from PIM1 in mycobacteria. << Less
J. Biol. Chem. 278:36285-36295(2003) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.
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Purification and characterization of the acyltransferase involved in biosynthesis of the major mycobacterial cell envelope glycolipid-- monoacylated phosphatidylinositol dimannoside.
Svetlikova Z., Barath P., Jackson M., Kordulakova J., Mikusova K.
Phosphatidylinositol mannosides are essential structural components of the mycobacterial cell envelope. They are implicated in host-pathogen interactions during infection and serve as a basis for biosynthesis of other unique molecules with immunomodulatory properties - mycobacterial lipopolysaccha ... >> More
Phosphatidylinositol mannosides are essential structural components of the mycobacterial cell envelope. They are implicated in host-pathogen interactions during infection and serve as a basis for biosynthesis of other unique molecules with immunomodulatory properties - mycobacterial lipopolysaccharides lipoarabinomannan and lipomannan. Acyltransferase Rv2611 is involved in one of the initial steps in the assembly of these molecules in Mycobacterium tuberculosis - the attachment of an acyl group to position-6 of the 2-linked mannosyl residue of the phosphatidylinositol mannoside anchor. Although the function of this enzyme was annotated 10 years ago, it has never been completely biochemically characterized due to lack of the pure protein. We have successfully overexpressed and purified MSMEG_2934, the ortholog of Rv2611c from the non-pathogenic model organism Mycobacteriumsmegmatis mc(2)155 using mycobacterial pJAM2 expression system, which allowed confirmation of its in vitro acyltransferase activity, and establishment of its substrate specificity. << Less
Protein Expr. Purif. 100:33-39(2014) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.