Combinatorial protein domains

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/62 (2006.01) C07K 14/00 (2006.01) C07K 14/245 (2006.01) C12N 15/10 (2006.01)

Patent

CA 2399809

The present invention relates to a chimaeric folded protein domain comprising two or more sequence segments from parent amino acid sequences that are not homologous, wherein each of said sequence segments: is not designed or selected to consist solely of a single complete protein structural element and is not designed or selected to consist solely of an entire protein domain; and, in isolation, shows no significant folding at the melting temperature of the chimaeric protein; as well as to methods for the selection of such domains; and to a chimaeric folded protein domain comprising two or more sequence segments which share common sequences or sequences from common regions in the protein fold of their parent amino acid sequences, wherein the said common region of the fold is not designed or selected to consist solely of one or more complete protein structural elements, and wherein each of said sequence segments: is not designed or selected to consist solely of an entire protein domain; and wherein, in isolation, each said sequence segment shows no significant folding at the melting temperature of the chimaeric protein; as well as to methods for the selection of such domains.

L'invention concerne un domaine de protéines pliées chimériques qui comprend au moins deux segments de séquence provenant de séquences d'acides aminés parentes non homologues. Chacun des segments de séquence n'est pas conçu ou choisi pour ne comporter qu'un seul élément structurel complet de protéine ni n'est conçu ou choisi pour ne comporter qu'un domaine de protéines entier et, en situation d'isolement, ne montre aucun pliage important à température de fusion de la protéine chimérique. L'invention concerne également des procédés de sélection de ces domaines et un domaine de protéines pliées chimériques qui comprend au moins deux segments de séquence qui partagent des séquences communes ou des séquences de régions communes dans le pli de protéine de leurs séquences parentes d'acides aminés, ladite région commune du pli séquence n'étant pas conçue ou choisie pour ne comporter qu'un seul élément structurel complet de protéine et chacun des segments de séquence n'étant pas conçu ou choisi pour ne comporter qu'un domaine de protéines entier. En situation d'isolement, par ailleurs, les segments de séquence ne montrent aucun pliage important à température de fusion de la protéine chimérique. L'invention concerne enfin des procédés de sélection de ces domaines.

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