In Lehninger's Principles of Biochemistry, David L. Nelson and Michael M. Cox state that monosoccharides with more than four carbon atoms often have cyclic structures (pyrannoses and furans) and provide an example with D-glucan. But, really, I don't understand very well how the process is carried out. For example, xylose has five carbon atoms, how would cycling be carried out?

  • $\begingroup$ Does he present an illustration of the structure of D-glucan? If so, can you link to it or a similar structure you’ve researched on the internet. (You have researched the question before posting?) $\endgroup$ – David Dec 26 '18 at 19:03
  • $\begingroup$ The answer got both questions is yes. $\endgroup$ – aprendiendo-a-programar Jan 1 at 11:46

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