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A family of small bacterial proteins has been recently discovered [1,2] that
seem to be involved in the formation of specific microcompartiments in the
cell in which the metabolism of potentially toxic by-products takes place.
The proteins that belong to this family are:
Escherichia coli and Salmonella typhimurium cchA, involved in the
degradation of ethanolamine.
Salmonella typhimurium pduA, involved in 1,2-propanediol metabolism.
Synechococcus ccmK, involved in the formation of the carboxysome which is
a polyhedral inclusion where RuBisCO is sequestred.
Thiobacillus neapolitanus carboxysome shell proteins csoS1A, csoS1B and
A number of hypothetical Synechococcus proteins which are also probably
involved in the carboxysome shell formation.
Escherichia coli hypothetical protein yffI.
These proteins have from 90 to 120 amino acid residues with the exception of
two Synechococcus hypothetical proteins which contains respectively 275 and
297 amino acids and which are made up of two tandem homologous domains. As a
signature pattern, we selected a conserved region in their N-terminal section.
December 2004 / Pattern and text revised.
PROSITE method (with tools and information) covered by this documentation:
English R.S., Lorbach S.C., Qin X., Shively J.M.
Isolation and characterization of a carboxysome shell gene from Thiobacillus neapolitanus.
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