Single bond

... (CTX or CT) is an oligomeric complex made up of six protein subunits: a single copy of the A subunit (part A), and five copies of the B subunit (part B), connected by a disulfide bond. The five B subunits form a five-membered ring that binds to GM1 gangliosides on ...

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Are you able to form hydrogen bonds after flipping the bases? But, theoretically, you do not "flip the base" since it should rotate freely (single bond to sugar)...

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... riboses flip upside down any way? Is it just from a simple twist of the single bond between the base + ribose? Thanks in advance for any help! I do appreciate it.

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... in fact more so on the gene pool of an group of individuals then on an single individual. You call it group selection, but that is basically the ... and let them fend for themselves. This coupled with a sort of family bond and it is easy to see why such a thing as altruism not only evolved ...

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... are of this type. X-ray diffration shows that in NaCN, for example, the bonds between sodium cations (Na+) and the cyanide anions (CN-) are ionic, ... to hold. In solution, the cyanide ions, still bound together as single CN- ions, move independently through the solution, as do sodium ions, ...

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