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. 2009 Nov 5;38(Database issue):D227–D233. doi: 10.1093/nar/gkp971

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© The Author(s) 2009. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.5/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 1. — A summary analysis for the peptidase homologues from the completely sequence genome of the archaean Cenarchium symbiosum. The figure is taken from the species page in the MEROPS website. A list of peptidase homologues arranged alphabetically by MEROPS identifier is shown in the top panel and the genome analysis is shown at the bottom of the page. The peptidase portion of the proteome of C. symbiosum (12) has been compared with those of 17 other species from the class Thermoprotei. There are unexpected absences of members of peptidase families C26, C44, M38, M48, S9 and U62, and an unexpected presence of a homologue from peptidase family M3. Of the species compared, C. symbiosum had the fewest number of peptidase family M20 homologues, but the most for peptidase family S8. The large number of absent peptidase families may indicates that this endosymbiont genome is degenerate.