Enzyme Commission Number

In its report in 1961, the first Enzyme Commission devised a system for enzyme classification that also serves as a basis for assigning code numbers. These code numbers, prefixed by EC, contain four elements separated by points / full stops and are now widely in use. The first number shows to which of the six main divisions (classes) the enzyme belongs and therefore identifies the class of reaction catalysed. The second number indicates the subclass,...
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