By comparison, a signature is a stylized script associated with a person. In commerce and the law, a signature on a document is an indication that the person adopts the intentions recorded in the document. Both are comparable to a seal. In many instances, common with engineering companies for example, digital seals are also required for another layer of validation and security.
Network Address Translation (NAT) is a way to map an entire network (or networks) to a single IP address. NAT is necessary when the number of IP addresses assigned to you by your Internet Service Provider is less than the total number of computers that you wish to provide internet access for. NAT is described in RFC 1631. NAT allows you to take advantage of the reserved address blocks described in RFC 1918.
Nattokinase (pronounced nat-oh-KY-nase) is an enzyme (EC 3.4.21.62) extracted and purified from a Japanese food called nattÅ. NattÅ is made from fermented soybeans and has been eaten in Japan for about a thousand years. NattÅ is produced by fermentation by adding the bacterium Bacillus natto to boiled soybeans. Nattokinase is produced by the bacterium acting on the soybeans. While other soy foods contain enzymes, it is only the nattÅ preparation that contains the specific nattokinase enzyme. In spite of its name, nattokinase is not a kinase enzyme, but a serine protease of the subtilisin family. It exhibits a strong fibrinolytic activity. Nattokinase can now be produced by recombinant means and in batch culture, rather than relying on extraction from NattÅ.