AMBER: a nomenclature question

From: Kenley Barrett <>
Date: Fri, 6 May 2005 11:11:24 -0500

I working on determining the protonation states of various histidine
residues in my protein, and referred to the CRC handbook for pKas.
Does anyone know what the difference is between L-1-methylhistidine
and L-3-methylhistidine? I found these in the handbook, which does not
appear to comply with the IUPAC nomenclature recommendations.

Thank you very much for your help.

Kenley Barrett
Northwestern University
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Received on Fri May 06 2005 - 17:53:01 PDT
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