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How to determine overall charge of a peptide at physiological pH 7.4?

Hey guys..
For a peptide, how do you determine the overall charge of it?

I'm really confused, the answer to this molecule is +1 but I don't get how? Please can somebody explain it to me.

Thanks
Reply 1
anyone?
Original post by EffKayy
anyone?


yoooo, which module is this from?

I think it might have something to do with the fact that one of the NH2 groups might get protonated :s-smilie: I'm pretty sure I'm wrong though!

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