Page 196 - The Miracle in the Cell Membrane
P. 196

After a car has been produced in the factory and before it
                     reaches the consumer it needs to go through such stages as
                     sale to distributors and registration. The way that proteins
                     produced by cells reach the regions where they are needed is
                     a complex process. The body of a mammal
                     contains approximately 1 billion protein mole-
                     cules that need to be renewed at least once a
                     month.
                        The Rockefeller University researcher
                     Günter Blobel and his team analyzed an
                     important part of this protein distribution sys-
                     tem and found that a kind of molecular postal  Gün ter Blo bel
                     code directs protein to particular locations.
                     Special receptors on the surface of the cell membrane read
                     these signals and permit only the correct protein to pass
                     through or be installed in the cell membrane.
                        One portion of the newly produced proteins are removed
                     from the cell under the supervision of the cell membrane, to
                     be used outside the cell. Those proteins entering from out-
                     side—again regulated by the cell membrane—constitute
                     major protein traffic. The extraordinary coming and going
                     inside the cell is far too small to be seen with the naked eye.
                     But so many particles in such a small space, each with its own
                     important function, can go where they are needed in great
                     order and harmony. Every protein produced in what is known
                     as the ribosome and every protein from other cells will be
                     used in a specific place. But how do these proteins know
                     where they need to go? How do they pass through the cell
                     membranes with their tight safeguards? How does this aston-
                     ishingly heavy protein traffic function without a mistake ever
                     being made?
                        There can be no doubt that proteins to be drawn into or
                     removed from a cell, and the cell membrane that permits this,
                     are just some of the proofs of the existence of Allah.


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