From owner-biophys@hgmp.mrc.ac.uk Tue Aug 12 21:05:10 2003 Return-Path: X-Original-To: biophys-outgoing Received: from localhost (localhost [127.0.0.1]) by mercury.hgmp.mrc.ac.uk (Postfix) with SMTP id 8E7367D0EA for ; Tue, 12 Aug 2003 21:05:10 +0100 (BST) X-Original-To: biophys-list@hgmp.mrc.ac.uk Received: from localhost (localhost [127.0.0.1]) by mercury.hgmp.mrc.ac.uk (Postfix) with ESMTP id 1CBBC7D0ED for ; Tue, 12 Aug 2003 21:05:10 +0100 (BST) Received: from niobium.hgmp.mrc.ac.uk (niobium [193.62.192.41]) by mercury.hgmp.mrc.ac.uk (Postfix) with ESMTP id 0BBB27D0E2 for ; Tue, 12 Aug 2003 21:05:09 +0100 (BST) Received: (from news@localhost) by niobium.hgmp.mrc.ac.uk (8.11.6+Sun/8.8.8) id h7CK58m19208 for biophys-list@hgmp.mrc.ac.uk; Tue, 12 Aug 2003 21:05:08 +0100 (BST) X-Authentication-Warning: niobium.hgmp.mrc.ac.uk: news set sender to using -f From: "Matthew Brenneman" X-Newsgroups: bionet.biophysics Subject: Molecular Dynamics Date: Mon, 11 Aug 2003 23:35:54 -0400 Organization: Michigan State University Lines: 16 Message-ID: X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 To: biophys@hgmp.mrc.ac.uk Sender: owner-biophys@hgmp.mrc.ac.uk Precedence: bulk Hello, I have a very simple question. Has anyone ever inferred the motion of a molecular group in a protein (like a trp or tyr ring) that does not undergo free motion, but rather makes rare transitions between distinct states from experimental data. I know that people like McCammon have done work analyzing trp ring flips years ago, but to my knowledge, they did not compare their results to experimental data on the ring flip. Thanks in Advance, Matthew T. Brenneman .