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Binding proteins from alternative scaffolds
KTH, Superseded Departments, Biotechnology.ORCID iD: 0000-0003-4214-6991
2004 (English)In: JIM - Journal of Immunological Methods, ISSN 0022-1759, E-ISSN 1872-7905, Vol. 290, no 1-2, 3-28 p.Article, review/survey (Refereed) Published
Abstract [en]

The use of so-called protein scaffolds for the generation of novel binding proteins via combinatorial engineering has recently emerged as a powerful alternative to natural or recombinant antibodies. This concept requires an extraordinary stable protein architecture tolerating multiple substitutions or insertions at the primary structural level. With respect to broader applicability it should involve a type of polypeptide fold which is observed in differing natural contexts and with distinct biochemical functions, so that it is likely to be adaptable to novel molecular recognition purposes. The quickly growing number of approaches can be classified into three groups: carrier proteins for the display of single variegated loops, scaffolds providing rigid elements of secondary structure, and protein frameworks supporting a group of conformationally variable loops in a fixed spatial arrangement. Generally, such artificial receptor proteins should be based on monomeric and small polypeptides that are robust, easily engineered, and efficiently produced in inexpensive prokaryotic expression systems. Today, progress in protein library technology allows for the parallel development of immunoglobulin (Ig) as well as scaffold-based affinity reagents. Both biomolecular tools have the potential to complement each other, thus expanding the possibility to find an affinity reagent suitable for a given application. The repertoire of protein scaffolds hitherto recruited for combinatorial protein engineering purposes will probably be further expanded in the future, including both additional natural proteins and de novo designed proteins, contributing to the collection of libraries available at present. In this review both the structural features and the practical use of scaffold proteins will be discussed and exemplified.

Place, publisher, year, edition, pages
2004. Vol. 290, no 1-2, 3-28 p.
Keyword [en]
antibody, combinatorial biochemistry, library selection, molecular recognition, protein engineering, single-domain antibody, neutrophil elastase inhibitors, designing repeat proteins, bacterial receptor domain, green fluorescent protein, random peptide libraries, small recognition units, messenger-rna display, taq dna-polymerase, in-vitro selection
National Category
Industrial Biotechnology
URN: urn:nbn:se:kth:diva-23619DOI: 10.1016/j.jim.2004.04.006ISI: 000223019600002ScopusID: 2-s2.0-3142677981OAI: diva2:342318
QC 20100525 QC 20111103Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2011-11-03Bibliographically approved

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