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Table 1 General information of analyzed genomes, newly identified CAGs and ORFans

From: A hidden reservoir of integrative elements is the major source of recently acquired foreign genes and ORFans in archaeal and bacterial genomes

Analyzed genomes  
   Number of genomes 119
   Number of ORFs 351,111
   Number of atypical ORFs 58,487 (16% of all genes)
   Number of CAGs 2,377
   Number of ORFs in CAGs 47,441 (13% of all genes)
Newly identified CAGs  
   Number of CAGs 2,104
   CAGs of likely plasmid origin 674 (32%)
   CAGs of likely virus origin 164 (8%)
   CAGs of likely viruse and plasmid origin 341 (16%)
   CAGs likely from cellular sources 145 (7%)
   CAGs unclassified 780 (37%)
ORFans  
   Number of ORFans 8,987
   Number of ORFans in CAGs 3,475 (39%)
   ORFans in annotated proviruses and CAGs of likely virus origin 875 (25.1% of all ORFans inside CAGs)
   Number of ORFans in CAGs of likely plasmid origin 680 (19.5% of all ORFans inside CAGs)
   Number of ORFans in CAGs of likely virus and plasmid origin 224 (6.4% of all ORFans inside CAGs)
   Number of ORFans in CAGs likely from cellular sources 54 (1.5% of all ORFans inside CAGs)
   Number of ORFans in unclassified CAGs 1,642 (47.5% of all ORFans inside CAGs)