Stabilized proteins

C - Chemistry – Metallurgy – 12 – P

Patent

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Details

C12P 21/06 (2006.01) C07H 21/02 (2006.01) C07H 21/04 (2006.01) C07K 16/00 (2006.01) C12N 9/00 (2006.01) C12N 9/54 (2006.01) C12N 9/96 (2006.01) C12N 15/00 (2006.01)

Patent

CA 2387870

The invention described herein comprises methods for stabilizing polypeptides and polypeptide complexes. The stabilization methods include controlled cross- link reaction such that polypeptides and polypeptide complexes maintain their original functionality. Embodiments of the invention outlining methods for identification of amino acid residues which when cross-linked are least disruptive to the structure and function of the polypeptides or polypeptide complex; as well as methods for mutagenesis for identifying residues to further control the cross-link reaction; and statistical analysis of the data base for the identification suitable residue pairs which are least likely to be disruptive of structure and function when cross-linked. Detailed cross- linked procedures and reaction conditions are exemplified and discussed.

L'invention concerne des procédés permettant de stabiliser les polypeptides et les complexes polypeptidiques. Ce procédé de stabilisation comprend une réaction de réticulation commandée de telle sorte que les polypeptides et les complexes polypeptidiques conservent leur fonctionnalité d'origine. Des modes de réalisation de l'invention concernent, d'une part, des procédés permettant d'identifier des restes d'acides aminés qui, lorsqu'ils sont réticulés, perturbent au moins la structure et la fonction des polypeptides et des complexes polypeptidiques; et, d'autre part, des procédés de mutagenèse permettant d'identifier des restes pour une autre réaction de réticulation commandée. L'invention concerne également une analyse statistique de la base de données afin d'identifier les paires de restes appropriés qui, lorsqu'ils sont réticulés, sont moins propices à perturber la structure et la fonction. L'invention concerne en outre des procédures détaillées de réticulation et des exemples de conditions de réaction.

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