Protein substance having triple helix structure and...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/09 (2006.01) C07K 14/78 (2006.01) C07K 19/00 (2006.01) C12P 21/02 (2006.01)

Patent

CA 2748015

As a result of dedicated research, the present inventors have successfully invented a collagen gene construct which can be easily purified and maintains a triple helix structure equivalent to that of naturally-occurring collagen while having a low molecular weight. Specifically, one-step purification by affinity purification is enabled because CR-D (a signal peptide) has a carbohydrate recognition domain. By substituting a portion of a human collagen structural gene of the present invention with the collagen-like structural gene portion of MBL, a low-molecular-weight collagen which maintains a triple helix structure and is thermally stable can be obtained with high purity and in large quantities.

La présente invention concerne une construction de gène de collagène facilement raffinée et pouvant conserver une structure en triple hélice équivalente à celle du collagène naturel tout en présentant une faible masse molaire. Spécifiquement, CR-D, qui est un peptide de signalement, ayant une région de reconnaissance de chaîne sucrée, le raffinage en une étape est rendu possible par raffinage par affinité, et en substituant une portion d'un gène structurel du collagène humain à la partie gène structurel de type collagène du MBL, un collagène de faible masse molaire conservant une structure en triple hélice présentant une stabilité thermique peut être obtenu avec une pureté élevée et en grande quantité.

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