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1h0t

From Proteopedia

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{{STRUCTURE_1h0t| PDB=1h0t | SCENE= }}
{{STRUCTURE_1h0t| PDB=1h0t | SCENE= }}
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'''AN AFFIBODY IN COMPLEX WITH A TARGET PROTEIN: STRUCTURE AND COUPLED FOLDING'''
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===AN AFFIBODY IN COMPLEX WITH A TARGET PROTEIN: STRUCTURE AND COUPLED FOLDING===
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==Overview==
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Combinatorial protein engineering provides powerful means for functional selection of novel binding proteins. One class of engineered binding proteins, denoted affibodies, is based on the three-helix scaffold of the Z domain derived from staphylococcal protein A. The Z(SPA-1) affibody has been selected from a phage-displayed library as a binder to protein A. Z(SPA-1) also binds with micromolar affinity to its own ancestor, the Z domain. We have characterized the Z(SPA-1) affibody in its uncomplexed state and determined the solution structure of a Z:Z(SPA-1) protein-protein complex. Uncomplexed Z(SPA-1) behaves as an aggregation-prone molten globule, but folding occurs on binding, and the original (Z) three-helix bundle scaffold is fully formed in the complex. The structural basis for selection and strong binding is a large interaction interface with tight steric and polar/nonpolar complementarity that directly involves 10 of 13 mutated amino acid residues on Z(SPA-1). We also note similarities in how the surface of the Z domain responds by induced fit to binding of Z(SPA-1) and Ig Fc, respectively, suggesting that the Z(SPA-1) affibody is capable of mimicking the morphology of the natural binding partner for the Z domain.
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{{ABSTRACT_PUBMED_12594333}}
==About this Structure==
==About this Structure==
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1H0T is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Staphylococcus_aureus Staphylococcus aureus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1H0T OCA].
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1H0T is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Staphylococcus_aureus Staphylococcus aureus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1H0T OCA].
==Reference==
==Reference==
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[[Category: Protein engineering]]
[[Category: Protein engineering]]
[[Category: Protein-protein interaction]]
[[Category: Protein-protein interaction]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 18:16:16 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 06:25:54 2008''

Revision as of 03:25, 1 July 2008

Image:1h0t.png

Template:STRUCTURE 1h0t

AN AFFIBODY IN COMPLEX WITH A TARGET PROTEIN: STRUCTURE AND COUPLED FOLDING

Template:ABSTRACT PUBMED 12594333

About this Structure

1H0T is a Single protein structure of sequence from Staphylococcus aureus. Full experimental information is available from OCA.

Reference

An affibody in complex with a target protein: structure and coupled folding., Wahlberg E, Lendel C, Helgstrand M, Allard P, Dincbas-Renqvist V, Hedqvist A, Berglund H, Nygren PA, Hard T, Proc Natl Acad Sci U S A. 2003 Mar 18;100(6):3185-90. Epub 2003 Feb 19. PMID:12594333

Page seeded by OCA on Tue Jul 1 06:25:54 2008

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