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Table 1 Definition of proteins clusters.

From: The core and unique proteins of haloarchaea

Protein clusters Description Reference
COG Clusters of orthologous groups in 26 or 66 microorganisms* [23, 24]
KOG Clusters of orthologous groups in 7 eukaryotic organisms* [24]
arCOG Clusters of orthologous groups in 41 or 70 archaeal microorganisms [28]
HOG Clusters of orthologous groups in 13 haloarchaeal microorganisms This work
cHOG Conserved orthologous groups in all 13 haloarchaeal microorganisms This work
aHOG HOGs not conserved in all 13 haloarchaeal microorganisms This work
ucHOG cHOGs not associated with any COGs or KOGs This work
tucHOG ucHOGs that do not have any homologs among any other proteins This work
nucHOG ucHOGs that have 1 or more non-haloarchaeal homologs This work
  1. *COGs and KOGs both include S. cerevisiae