Biological complexity: controlling intracellular traffic (Introduction)

by David Turell , Friday, November 10, 2017, 00:33 (2571 days ago) @ David Turell

Expression of certain proteins and enzymes controls speed and direction of traffic along the microtubules in the cells:

https://www.sciencedaily.com/releases/2017/11/171109131223.htm

"The highways inside cells are called microtubules, and proteins called kinesins and dyneins act like motors and are essentially the cargo trucks in cells, O'Hagan said. The motor proteins drive cargoes around microtubule highways, but a central question in cell biology is how intracellular transport and the highway systems are organized. Questions include how the motor proteins know where to go and how fast they need to be.

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" The scientists found that TTLL-11 is an enzyme that puts traffic signs composed of the amino acid glutamate on the microtubule highways to regulate the speed of the protein cargo trucks. CCPP-1 is an enzyme that takes down these glutamate traffic signs when there are too many of them, according to O'Hagan.

"'Working together, they seem to regulate the speed of the motors that move cargoes on the microtubular highways," he said.

"The scientists also found that the glutamates can also act as a "roadway under construction" sign, changing the highways' structure, he said."

Comment: There is no way to develop this system stepwise. It is too complex with specific enzymes and proteins working in concert. It must be designed and put into effect all at once. Only a designer God can do his.