aaaaages ago, back when twitter had customizable profiles, I was going through a spell of being hyperfixated on reading about biochemistry and I found the old "Biochemical Pathways" poster Roche sends out as promotional material -- I just thought this part of the poster was really well-designed and attractive geometrically, so I used it as my profile background
when we launched cohost I decided to bring that back
gotta be DNA topoisomerases. DNA is double-helical for some stupid reason1, which means that to read the gene for a particular protein out of a chromosome, the proteins inside your cell nucleus need to untangle it; if you try to separate the two strands and read out of the middle, the two ends supercoil and kink. so over billions of years nature invented some little guys which slice through your DNA, remove a 360-degree twist from it, and stick it back together constantly
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the reasons are actually more or less sensical but irrelevant to this post

