Combining SPOT Synthesis and Native Chemical Ligation to Generate Large Arrays of Small Protein Domains

Autor: Tobias Knaute, Florian Toepert, Jens Schneider-Mergener, Stefan Guffler
Rok vydání: 2001
Předmět:
Zdroj: Peptides: The Wave of the Future ISBN: 9789401039055
DOI: 10.1007/978-94-010-0464-0_95
Popis: We present a novel approach for the construction of large arrays of synthetic protein domains. A combination of SPOT synthesis [1] and native chemical ligation [2] was applied to generate 6859 variants of the hYAP WW protein domain [3,4] consisting of 38 amino acids. Leucine 30, histidine 32 and glutamine 35 were substituted by all other L-amino acids (excluding cysteine) resulting in 19 × 19 × 19 = 6859 variants. The C-terminal parts of the protein domains were prepared by SPOT synthesis creating 6859 C-terminal peptides comprising 24 residues with variations in the positions described above and an N-terminal cysteine. Full length protein domains were assembled upon ligation of a thioester-peptide comprising the remaining 14 residues. The ligation site (originally a serine) had been identified in previous studies [5].
Databáze: OpenAIRE