Here's a lovely DNA structure from our friend, human immunodeficiency virus I. I especially like the way that two heart-like shapes appear in the structure.
tags: DNA structure, DNA , molecular structure, biochemistry
![i-bd7f1d9af4cc00e2132dd15ac7c15ebb-hearts.gif](http://scienceblogs.com/digitalbio/wp-content/blogs.dir/460/files/2012/04/i-bd7f1d9af4cc00e2132dd15ac7c15ebb-hearts.gif)
Is nature ironic or what?
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Okay, all of you biochemists and molecular biology types. I have a puzzle for you that I found by accident during a lecture. Yes, I was the one lecturing and the notes will be posted soon.
In the meantime, here's your puzzle: What's unusual about this pair of bases?
tags: DNA structure, DNA ,…
DNA ?
Is this structure formed following reverse transcription of the viral RNA ?
This sequence was synthesized using phosphoramidite chemistry.
It corresponds to the cDNA sequence of the dimerization initiation site SL1 of HIV- 1(Lai) RNA.