| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Research Abstract |
ADAM proteinases are mostly type-1 membrane-bound glycoproteins and function as major sheddases for the processing of cell-surface-protein ectodomains, including the latent forms of growth factors and cytokines. ADAMs play key roles in normal development and morphogenesis and are associated with several diseases, including cancer and Alzheimer's disease. There are no consensus amino acid sequences around the sites cleaved by ADAMs and the molecular mechanism how ADAMs recognize the target molecules remains elusive. We focused on several ADAMs from snake venoms for crystallographic studies because snake ADAMs are soluble proteinases without membrane-spanning regions and usually display high specificity for distinct target molecules. Multactivase isolated from Echis multimantus has a prothrombin-activating activity. We have determined a crystal structure of the exosite domain of Multactivase and discussed the molecular mechanism of prothrombin recognition for cleavage by Multactivase.
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