hydrogen bonds involving cysteine

From: John S Tokarski <tokarskj()at()bms.com>
Organization: Bristol-Myers Squibb
Subject: hydrogen bonds involving cysteine
Date: Tue, 08 Jun 1999 12:16:42 -0400

Dear netters,
 Has anyone observed a cysteine -SH hydrogen bond to an sp2
 oxygen?
 Thanks in advance,
 John