Evidence for pattern development; enzymes (Introduction)

by David Turell , Monday, December 15, 2014, 14:43 (3422 days ago) @ David Turell

Here are five essential enzymes which are look-alikes, but each one functions for different purposes and they cannot be converted into each other. Note the complexity. Yet they suggest the origination followed a pattern:-http://www.biologicinstitute.org/post/105191942279/thinking-differently-about-biology-"The five enzymes shown above are clearly related in structure, especially the three on the left. Yet none of the others can replace BioF2's function in the cell, even when mutated and made in large amounts. Why is that? Probably because each enzyme is a structural whole, whose sequence is made to work together as a whole. Substituting or changing little bits doesn't work."-"Taking these two ideas together, it may be that our prior attempts to convert Kbl2 to perform the function of BioF2 failed not because we made the wrong alterations but rather because it is misguided even to think of this as an exercise in alteration. Perhaps we should think of this more in the way we think about writing. Sentences that convey different ideas may have similar structures, but when we write a sentence we start with the idea, not the sentence structure. We never take a sentence that conveys some other idea and ask which letters can be changed to make it better suited for our present purpose. The fact that different ideas end up being conveyed with sentences of similar structure, then, has nothing to do with recycling of sentences and everything to do with the suitability of certain forms for certain functions."