Dna encoding the human serine protease eos

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 9/64 (2006.01) A61K 38/48 (2006.01) A61K 39/395 (2006.01) C07K 16/40 (2006.01) C12N 15/57 (2006.01) C12N 15/62 (2006.01) C12N 15/70 (2006.01) C12N 15/79 (2006.01) C12N 15/866 (2006.01) C12Q 1/37 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2383601

Here we describe the molecular identification of a cDNA encoding a novel serine protease we have termed protease EOS. The deduced amino acid sequence, and its alignment with other well-characterized serine proteases clearly indicates that it is a member of the S1 serine protease family. We have found that the protease EOS mRNA is expressed in platelets and leukocytes and more specifically eosinophils and possibly macrophages. Although this protease is abundantly expressed in ovary, retina and stomach, where it may perform important functions, its expression in platelets and certain cells of the immune system suggests that it may play roles in thrombosis and in the immune process. Enzymatically active protease EOS is amenable to further biochemical analyses for the identification of physiological substrates and specific modulators.

On décrit, dans la présente invention, l'identification moléculaire d'un ADN complémentaire codant une nouvelle sérine protéase que l'on nommée EOS. La séquence d'acides aminés déduite, et son alignement avec d'autres sérines protéases bien caractérisées indique clairement qu'elle est un membre de la famille "sérine protéase S1". On a découvert que la protéase EOS ARN messager est exprimée dans les plaquettes et les leucocytes, et plus précisément dans les polynucléaires eosinophiles et éventuellement les macrophages. Bien que cette protéase soit exprimée en abondance dans les ovaires, la rétine et l'estomac, où elle accomplit des fonctions importantes, son expression dans les plaquettes et certaines cellules du système immunitaire donne à penser qu'elle joue un rôle dans la thrombose et dans le processus immunitaire. Une protéase EOS active sur le plan enzymatique peut faire l'objet d'autres analyses biochimiques d'identification de substrats physiologiques et de modulateurs spécifiques.

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