1cwo: Difference between revisions

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==Overview==
==Overview==
The crystal structure of (Thr2, Leu5, d-Hiv8, Leu10)-cyclosporin (cyclic, peptolide SDZ 214-103) has been determined as the unbound crystal form and, as a complex with human cyclophilin A. This pair of structures provides an, example of a significant difference in conformation between free and bound, ligand in crystals. The conformation of the unbound form is unlike that of, both free and bound conformations of cyclosporin A (with the amide bond, between residues 3 and 4 in the cis conformation), while the bound, conformation is similar to that of CsA bound to cyclophilin. The, cyclophilin-bound conformations of both ligands are similar, though this, involves a significantly different waterellipsisligand hydrogen-bonding, structure, which compensates for the chemical differences between the two, ligands.
The crystal structure of (Thr2, Leu5, d-Hiv8, Leu10)-cyclosporin (cyclic peptolide SDZ 214-103) has been determined as the unbound crystal form and as a complex with human cyclophilin A. This pair of structures provides an example of a significant difference in conformation between free and bound ligand in crystals. The conformation of the unbound form is unlike that of both free and bound conformations of cyclosporin A (with the amide bond between residues 3 and 4 in the cis conformation), while the bound conformation is similar to that of CsA bound to cyclophilin. The cyclophilin-bound conformations of both ligands are similar, though this involves a significantly different waterellipsisligand hydrogen-bonding structure, which compensates for the chemical differences between the two ligands.


==About this Structure==
==About this Structure==
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[[Category: Mikol, V.]]
[[Category: Mikol, V.]]
[[Category: Taylor, P.]]
[[Category: Taylor, P.]]
[[Category: Walkinshaw, M.D.]]
[[Category: Walkinshaw, M D.]]
[[Category: complex (isomerase/immunosuppressant)]]
[[Category: complex (isomerase/immunosuppressant)]]


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