AMBER: B or E Dihedral Labels in RDPARM output

From: Mark Williamson <>
Date: Fri, 04 May 2007 15:04:17 +0100

Dear All,

When "viewing" an AMBER topology file using the RDPARM utility one can
list the dihedrals present using the 'dihedral' command. What do the
letters B or E mean at the start of a dihedral line?

I've looked in the AMBER manual and googled a bit, but not found much,
hence why I'm posting. I'm assuming at this moment that B means an
improper dihedral and E may mean an additional term in the Fourier
series for an existing dihedral. Can anyone confirm or explain?


Mark Williamson
The AMBER Mail Reflector
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Received on Sun May 06 2007 - 06:07:29 PDT
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