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+--- Thread: Why does Glutamate say there is an "NH2" group but the model below shows three hydrogen? (/thread-102961.html)
Why does Glutamate say there is an "NH2" group but the model below shows three hydrogen? - 493 - 02-23-2014 12:26 AM
http://en.wikipedia.org/wiki/Glutamate
The image at the top right has an "NH2" group but the picture just below shows 3 hydrogen projecting from the Nitrogen.
- chris s - 02-23-2014 12:32 AM
The model represents the structure of the ZWITTER ion of the molecule, formed by H^+ transferring from the OH group leaving it with a 1- charge to the NH2 group using this groups lone pair of electrons and forming a coordinate bond and an NH3^+ group.
This is a common occurrence in amino acids. A twitter ion is a molecule with overall neutrality but with + and - charged parts.