The following uncharacterized proteins have been shown  to be evolutionary
Barley low-temperature induced protein blt101.
Lophorium elongatum salt-sress induced protein ESI3.
Yeast hypothetical proteins YDL123w, YDR276c, YDR525Bw and YJL151c.
Caenorhabditis elegans hypothetical proteins F47B7.1, T23F2.3, T23F2.4,
T23F2.5 and ZK632.10.
Escherichia coli hypothetical protein yqaE.
Synechocystis strain PCC 6803 hypothetical protein ssr1169.
These are small proteins of from 52 to 140 amino-acid resiudes that contains
two transmembrane domains. As a signature pattern we selected a region that
corresponds to the end of the first transmembrane helix.
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