Assembled Alpha Helix Model

This 18 amino acid alpha helix model is designed to work with our 17 base pair DNA model & is only available assembled.  

Note: This model is available for sale only to customers who have bought the 17 base pair model or are planning to buy them together.

SKU: 62121A
Indigo Alpha Helix Molecular Model Kit-Assembled


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The size of the major & minor groove in the B DNA helix is very specific since most of the important chemistry takes place there. This model has been designed to fit the major groove by taking into account the stearic hindrance that is imposed on the molecule by the atoms in the DNA model. While you can physically squeeze it into the minor groove of our DNA model this would be forbidden in the real thing.

Note that poorly designed copies of our DNA model have a major groove that is more than double the correct size & have correspondingly much smaller minor grooves.

The animation below from Scientific American is particularly well done. However, it doesn't mention the fact that alpha helixes are attached in the major groove as anchors & are used in the process of pulling replicating DNA strands apart.

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