I can understand somewhat why DNA and RNA are considered Informational macromolecules, because they contain genetic information. But why are proteins considered Informational macromolecules?

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    $\begingroup$ Welcome to SE Biology. Could you tell us where you have read the description and claim that proteins are informational macromolecules. Then we can attempt to explain what your source meant by this statement. Or you could ask what example there are of proteins as informational macromolecules, as I wouldn't think of structural proteins in this way. But at present your question is not well formulated — you need to provide more information or clarify. Look at the Help on asking questions. $\endgroup$ – David Mar 28 at 19:20

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