Sweet substitution: NMR and insulin analogue
 

Sweet substitution: NMR and insulin analogue

http://www.spectroscopynow.com/commo...5973d96538.jpgReplacing a particular hydrogen with an iodine atom to create a halogenated insulin analogue maintains the functionality of the glucose-control hormone but makes it act much faster. Nuclear magnetic resonance spectroscopy and X-ray crystallography have been used to investigate the structure.

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