Sorry for this 'joke-like' question which was not intend to be a joke
There was a misunderstanding about my question
It is not null or not null which worry me, but it is the fact there is a
value for
glycine '"side chains" that I know for sure having no side chains.
From my point of view, it must be written n.d. (not determined) or
someting like that
instead of a value which differ from a gly "side chain" to a gly "side
chain"
(sorry for this non-sense "gly side chain")
best regards
nathalie
--
Dr. Nathalie Colloc'h, PhD
CI-NAPS, UMR 6232 - UCBN - CNRS
GIP Cyceron
Bd Becquerel, BP5229
14074 Caen cedex
FRANCE
Tel. 33.2.31.47.01.32
Fax. 33.2.31.47.02.22
[EMAIL PROTECTED]