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To: allmendream; betty boop
To the contrary, I am not at all embarrassed by my comments on prions with reference to the Shannon model.

Nor am I wrong about proteins. Proteins have information content - like the airways in radio transmission/reception or land lines in telephone conversations - but they are not the message nor do they constitute the successful communication of the message.

In "information theory and molecular biology" the message is DNA or RNA.

And in the Shannon model, information is the reduction of uncertainty (Shannon entropy) in the receiver (or molecular machine) in going from a before state to an after state.


107 posted on 01/27/2009 11:26:55 AM PST by Alamo-Girl
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To: Alamo-Girl
Proteins not only have information content, they are also able to alter and pass along a molecular “message” in Signal Transduction.

Indeed, many DNA’s would not be transcribed into RNA’s that would be turned into functional proteins if not for the “message” received by a protein at the cell surface, transduced to other signaling pathways involving proteins, that result in an active protein transcription factor binding to the promoter region of the DNA it is to transcribe to make a necessary subset of proteins to respond to the signal the cell received.

To deny that proteins convey messages is once again, to betray your ignorance of the subject. Even worse you are apparently unwilling or unable to learn and thus rectify your ignorance of the subject.

117 posted on 01/27/2009 11:36:22 AM PST by allmendream ("Wealth is EARNED not distributed, so how could it be redistributed?")
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