Moselio Schaechter


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« How Proteomics Got Started | Main | An Open Invitation to Argue With Me »

January 07, 2010

Talmudic Question #57

by Frank Harold

Does anyone know of a solid example of a biological membrane that arises de novo, rather than by the extension of a pre-existing membrane?

Comments

I don’t know the origin of the membranes which eventually form the vaccinia (or other poxvirus) envelope, but it would be interesting to take a look at this.

Ken Berns

Let me see if I understand the Question correctly: Are you suggesting, Talmudically, that perhaps every closed membrane found in the totality of modern cells amounts to a pinched-off fragment of a single ur-membrane, continuously grown lipid-by-lipid, that formed billions of years ago?

If so, we might see genes and other cellular machinery as a way that The Membrane has discovered to help extend itself.

How small do the bits of Golgi membrane get during mitosis? Obviously not de novo, but in the right direction at least.

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