by Christoph — I had al­most solved the twisted nails puz­zle in the first part. I had un­twisted the func­tion of the first nail, spot 42 RNA, as well as the func­tion of the sec­ond nail, the open read­ing frame con­tained within this 'dual‑function RNA' that is trans­lated as the SpfP pro­tein. Here now are two more twists...

by Christoph — I re­cently men­tioned in pass­ing that "...one is pok­ing a wasps' nest when study­ing cAMP·CRP re­gu­lat­ed genes." Are you ready to do some pok­ing with me? Well, in a back cor­ner of said wasp's nest lies a twisted nails puz­zle, the so­lu­tion to which I will re­veal here. You would be right...