The Double Helix (1968) by 11. James D. Watson

Author:11. James D. Watson [Watson, 11. James D.]
Language: eng
Format: epub
Publisher: ePub Bud (www.epubbud.com)
Published: 2012-08-19T04:00:00+00:00

Conceivably a few additional X-ray pictures would tell how the protein subunits were arranged. This was particularly true if they were helically stacked. Excitedly I pilfered Bemal's and Fankuchen's paper from the Philosophical Library and brought it up to the lab so that Francis could inspect the TMV.X-ray picture. When he saw the blank regions that characterize helical patterns, he jumped into action, quickly spilling out several possible helical TMV structures. From this moment on, I knew I could no longer avoid actually understanding the helical theory. Waiting until Francis had free time to help me would save me from having to master the mathematics, but only at the penalty of my standing still if Francis was out of the room. Luckily, merely a superficial grasp was needed to see why the TMV X-ray picture suggested a helix with a turn every 23 Å along the helical axis. The rules were, in fact, so simple that Francis considered writing them up under the title, "Fourier Transforms for the Birdwatcher."

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