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I have a question regarding your Glutamate Assay Kits, ab138883 and ab83389 . Are they only intended to measure free glutamate or can any of them also measure the amount of glutamic acid in peptides/proteins?
Asked on Jun 13 2013
Unfortunately neither of these kits will be able to detect glutamic acid in peptides/proteins. ab83389 only measures free glutamate levels not glutamic acid and ab138883 is based on enzymatic reactions so it is most likely that it will not react with the glutamate in peptide or proteins.
Answered on Jun 13 2013