1lp1
From Proteopedia
(New page: 200px<br /><applet load="1lp1" size="450" color="white" frame="true" align="right" spinBox="true" caption="1lp1, resolution 2.3Å" /> '''Protein Z in complex ...) |
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| - | [[Image:1lp1.jpg|left|200px]]<br /><applet load="1lp1" size=" | + | [[Image:1lp1.jpg|left|200px]]<br /><applet load="1lp1" size="350" color="white" frame="true" align="right" spinBox="true" |
caption="1lp1, resolution 2.3Å" /> | caption="1lp1, resolution 2.3Å" /> | ||
'''Protein Z in complex with an in vitro selected affibody'''<br /> | '''Protein Z in complex with an in vitro selected affibody'''<br /> | ||
==Overview== | ==Overview== | ||
| - | The broad binding repertoire of antibodies has permitted their use in a | + | The broad binding repertoire of antibodies has permitted their use in a wide range of applications. However, some uses of antibodies are precluded due to limitations in the efficiency of antibody generation. In vitro evolved binding proteins, selected from combinatorial libraries generated around various alternative structural scaffolds, are promising alternatives to antibodies. We have solved the crystal structure of a complex of an all alpha-helical in vitro selected binding protein (affibody) bound to protein Z, an IgG Fc-binding domain derived from staphylococcal protein A. The structure of the complex reveals an extended and complementary binding surface with similar properties to protein-antibody interactions. The surface region of protein Z recognized by the affibody is strikingly similar to the one used for IgG(1) Fc binding, suggesting that this surface contains potential hot-spots for binding. The implications of the selected affibody binding-mode for its application as a universal binding protein are discussed. |
==About this Structure== | ==About this Structure== | ||
| - | 1LP1 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Staphylococcus_aureus Staphylococcus aureus] with SO4 and MG as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http:// | + | 1LP1 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Staphylococcus_aureus Staphylococcus aureus] with <scene name='pdbligand=SO4:'>SO4</scene> and <scene name='pdbligand=MG:'>MG</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LP1 OCA]. |
==Reference== | ==Reference== | ||
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[[Category: Hogbom, M.]] | [[Category: Hogbom, M.]] | ||
[[Category: Nordlund, P.]] | [[Category: Nordlund, P.]] | ||
| - | [[Category: Nygren, P | + | [[Category: Nygren, P A.]] |
[[Category: MG]] | [[Category: MG]] | ||
[[Category: SO4]] | [[Category: SO4]] | ||
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[[Category: three-helix bundle]] | [[Category: three-helix bundle]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 13:47:02 2008'' |
Revision as of 11:47, 21 February 2008
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Protein Z in complex with an in vitro selected affibody
Overview
The broad binding repertoire of antibodies has permitted their use in a wide range of applications. However, some uses of antibodies are precluded due to limitations in the efficiency of antibody generation. In vitro evolved binding proteins, selected from combinatorial libraries generated around various alternative structural scaffolds, are promising alternatives to antibodies. We have solved the crystal structure of a complex of an all alpha-helical in vitro selected binding protein (affibody) bound to protein Z, an IgG Fc-binding domain derived from staphylococcal protein A. The structure of the complex reveals an extended and complementary binding surface with similar properties to protein-antibody interactions. The surface region of protein Z recognized by the affibody is strikingly similar to the one used for IgG(1) Fc binding, suggesting that this surface contains potential hot-spots for binding. The implications of the selected affibody binding-mode for its application as a universal binding protein are discussed.
About this Structure
1LP1 is a Single protein structure of sequence from Staphylococcus aureus with and as ligands. Full crystallographic information is available from OCA.
Reference
Structural basis for recognition by an in vitro evolved affibody., Hogbom M, Eklund M, Nygren PA, Nordlund P, Proc Natl Acad Sci U S A. 2003 Mar 18;100(6):3191-6. Epub 2003 Feb 25. PMID:12604795
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