1o7y: Difference between revisions
From Proteopedia
Jump to navigationJump to search
No edit summary |
No edit summary |
||
| Line 5: | Line 5: | ||
==Overview== | ==Overview== | ||
We have determined the structure of wild-type IP-10 from three crystal, forms. The crystals provide eight separate models of the IP-10 chain, all, differing substantially from a monomeric IP-10 variant examined previously, by NMR spectroscopy. In each crystal form, IP-10 chains form conventional, beta sheet dimers, which, in turn, form a distinct tetrameric assembly., The M form tetramer is reminiscent of platelet factor 4, whereas the T and, H forms feature a novel twelve-stranded beta sheet. Analytical, ultracentrifugation indicates that, in free solution, IP-10 exists in a, monomer-dimer equilibrium with a dissociation constant of 9 microM. We, propose that the tetrameric structures may represent species promoted by, the binding of glycosaminoglycans. The binding sites for several, . | We have determined the structure of wild-type IP-10 from three crystal, forms. The crystals provide eight separate models of the IP-10 chain, all, differing substantially from a monomeric IP-10 variant examined previously, by NMR spectroscopy. In each crystal form, IP-10 chains form conventional, beta sheet dimers, which, in turn, form a distinct tetrameric assembly., The M form tetramer is reminiscent of platelet factor 4, whereas the T and, H forms feature a novel twelve-stranded beta sheet. Analytical, ultracentrifugation indicates that, in free solution, IP-10 exists in a, monomer-dimer equilibrium with a dissociation constant of 9 microM. We, propose that the tetrameric structures may represent species promoted by, the binding of glycosaminoglycans. The binding sites for several, IP-10-neutralizing mAbs have also been mapped. | ||
==About this Structure== | ==About this Structure== | ||
1O7Y is a | 1O7Y is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/ ] with SO4 as [http://en.wikipedia.org/wiki/ligand ligand]. Structure known Active Site: AC1. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1O7Y OCA]. | ||
==Reference== | ==Reference== | ||
| Line 23: | Line 23: | ||
[[Category: interferon induction]] | [[Category: interferon induction]] | ||
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Mon Nov 5 15:11:57 2007'' | ||
