Title : Structural characterization of mycobacterial phosphatidylinositol mannoside binding to mouse CD1d.

Pub. Date : 2006 Oct 1

PMID : 16982895






9 Functional Relationships(s)
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1 We determined the crystal structure at 2.6-A resolution of mouse CD1d bound to a synthetic dipalmitoyl-PIM2. Phosphatidic Acids proviral integration site 2 Mus musculus
2 Natural PIM2, which differs in its fatty acid composition is a biosynthetic precursor of PIM4, PIM6, lipomannan, and lipoarabinomannan. Fatty Acids proviral integration site 2 Mus musculus
3 Natural PIM2, which differs in its fatty acid composition is a biosynthetic precursor of PIM4, PIM6, lipomannan, and lipoarabinomannan. lipomannan proviral integration site 2 Mus musculus
4 Natural PIM2, which differs in its fatty acid composition is a biosynthetic precursor of PIM4, PIM6, lipomannan, and lipoarabinomannan. lipoarabinomannan proviral integration site 2 Mus musculus
5 The PIM2 headgroup (inositol-dimannoside) is the most complex to date among all the crystallized CD1d ligands and is remarkably ordered in the CD1d binding groove. inositol-dimannoside proviral integration site 2 Mus musculus
6 A specific hydrogen-bonding network between PIM2 and CD1d orients the headgroup in the center of the binding groove and above the A" pocket. Hydrogen proviral integration site 2 Mus musculus
7 The additional two mannoses in PIM4, relative to PIM2, are located at the distal 6" carbon of the alpha1-alpha6-linked mannose and would project away from the CD1d binding groove for interaction with the TCR. Carbon proviral integration site 2 Mus musculus
8 Compared with other CD1d-sphingolipid structures, PIM2 has an increased number of polar interactions between its headgroup and CD1, but reduced specificity for the diacylglycerol backbone. Sphingolipids proviral integration site 2 Mus musculus
9 Compared with other CD1d-sphingolipid structures, PIM2 has an increased number of polar interactions between its headgroup and CD1, but reduced specificity for the diacylglycerol backbone. Diglycerides proviral integration site 2 Mus musculus