1y8e
From Proteopedia
(New page: 200px<br /><applet load="1y8e" size="450" color="white" frame="true" align="right" spinBox="true" caption="1y8e, resolution 2.2Å" /> '''VCP:Suramin Complex''...) |
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| - | [[Image:1y8e.gif|left|200px]]<br /><applet load="1y8e" size=" | + | [[Image:1y8e.gif|left|200px]]<br /><applet load="1y8e" size="350" color="white" frame="true" align="right" spinBox="true" |
caption="1y8e, resolution 2.2Å" /> | caption="1y8e, resolution 2.2Å" /> | ||
'''VCP:Suramin Complex'''<br /> | '''VCP:Suramin Complex'''<br /> | ||
==Overview== | ==Overview== | ||
| - | Suramin is a competitive inhibitor of heparin binding to many proteins, including viral envelope proteins, protein tyrosine phosphatases, and | + | Suramin is a competitive inhibitor of heparin binding to many proteins, including viral envelope proteins, protein tyrosine phosphatases, and fibroblast growth factors (FGFs). It has been clinically evaluated as a potential therapeutic in treatment of cancers caused by unregulated angiogenesis, triggered by FGFs. Although it has shown clinical promise in treatment of several cancers, suramin has many undesirable side effects. There is currently no experimental structure that reveals the molecular interactions responsible for suramin inhibition of heparin binding, which could be of potential use in structure-assisted design of improved analogues of suramin. We report the structure of suramin, in complex with the heparin-binding site of vaccinia virus complement control protein (VCP), which interacts with heparin in a geometrically similar manner to many FGFs. The larger than anticipated flexibility of suramin manifested in this structure, and other details of VCP-suramin interactions, might provide useful structural information for interpreting interactions of suramin with many proteins. |
==About this Structure== | ==About this Structure== | ||
| - | 1Y8E is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Vaccinia_virus Vaccinia virus] with SVR as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http:// | + | 1Y8E is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Vaccinia_virus Vaccinia virus] with <scene name='pdbligand=SVR:'>SVR</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Y8E OCA]. |
==Reference== | ==Reference== | ||
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[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Vaccinia virus]] | [[Category: Vaccinia virus]] | ||
| - | [[Category: Ganesh, V | + | [[Category: Ganesh, V K.]] |
| - | [[Category: Kotwal, G | + | [[Category: Kotwal, G J.]] |
| - | [[Category: Murthy, K | + | [[Category: Murthy, K H.]] |
| - | [[Category: Muthuvel, S | + | [[Category: Muthuvel, S K.]] |
| - | [[Category: Smith, S | + | [[Category: Smith, S A.]] |
[[Category: SVR]] | [[Category: SVR]] | ||
[[Category: beta barrel]] | [[Category: beta barrel]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 16:02:45 2008'' |
Revision as of 14:02, 21 February 2008
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VCP:Suramin Complex
Overview
Suramin is a competitive inhibitor of heparin binding to many proteins, including viral envelope proteins, protein tyrosine phosphatases, and fibroblast growth factors (FGFs). It has been clinically evaluated as a potential therapeutic in treatment of cancers caused by unregulated angiogenesis, triggered by FGFs. Although it has shown clinical promise in treatment of several cancers, suramin has many undesirable side effects. There is currently no experimental structure that reveals the molecular interactions responsible for suramin inhibition of heparin binding, which could be of potential use in structure-assisted design of improved analogues of suramin. We report the structure of suramin, in complex with the heparin-binding site of vaccinia virus complement control protein (VCP), which interacts with heparin in a geometrically similar manner to many FGFs. The larger than anticipated flexibility of suramin manifested in this structure, and other details of VCP-suramin interactions, might provide useful structural information for interpreting interactions of suramin with many proteins.
About this Structure
1Y8E is a Single protein structure of sequence from Vaccinia virus with as ligand. Full crystallographic information is available from OCA.
Reference
Structural basis for antagonism by suramin of heparin binding to vaccinia complement protein., Ganesh VK, Muthuvel SK, Smith SA, Kotwal GJ, Murthy KH, Biochemistry. 2005 Aug 16;44(32):10757-65. PMID:16086578
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