Family M42: distribution among Archaea

Organisms named in bold type are those for which the genomes have been completely sequenced.
Organism	Counts of peptidase homologues
Aciduliprofundum boonei	2
Aeropyrum pernix	1
Archaeoglobus fulgidus	1
Archaeoglobus profundus	1
Archaeoglobus veneficus	1
Caldivirga maquilingensis	2
Candidatus Haloredivivus sp. G17	1
Candidatus Korarchaeum cryptofilum	3
Candidatus Methanoregula boonei	1
Candidatus Nanosalina sp. J07AB43	2
Candidatus Nanosalinarum sp. J07AB56	2
Desulfurococcus fermentans	1
Desulfurococcus kamchatkensis	1
Desulfurococcus mucosus	1
Ferroglobus placidus	1
Fervidicoccus fontis	1
Haladaptatus paucihalophilus	3
Halalkalicoccus jeotgali	2
Haloarcula argentinensis	1
Haloarcula californiae	1
Haloarcula hispanica	1
Haloarcula japonica	1
Haloarcula marismortui	1
Haloarcula sinaiiensis	1
Haloarcula vallismortis	1
Halobacterium salinarum	1
Halobacterium sp. DL1	2
Halobiforma lacisalsi	1
Haloferax mediterranei	2
Haloferax volcanii	2
Halogeometricum borinquense	2
Halogranum salarium	3
Halomicrobium mukohataei	1
halophilic archaeon DL31	3
Halopiger xanaduensis	2
Haloquadratum walsbyi	2
Halorhabdus tiamatea	2
Halorhabdus utahensis	1
Halorubrum lacusprofundi	2
Haloterrigena turkmenica	1
Hyperthermus butylicus	1
Methanobacterium sp. AL-21	1
Methanobacterium sp. SWAN-1	1
Methanobrevibacter ruminantium	1
Methanobrevibacter smithii	1
Methanocaldococcus fervens	1
Methanocaldococcus infernus	1
Methanocaldococcus jannaschii	1
Methanocaldococcus sp. FS406-22	1
Methanocaldococcus vulcanius	1
Methanococcoides burtonii	1
Methanococcus aeolicus	1
Methanococcus maripaludis	1
Methanococcus vannielii	1
Methanococcus voltae	1
Methanocorpusculum labreanum	1
Methanoculleus bourgensis	1
Methanoculleus marisnigri	1
Methanofollis liminatans	1
Methanohalobium evestigatum	1
Methanohalophilus mahii	1
Methanolinea tarda	1
Methanoplanus limicola	1
Methanoplanus petrolearius	1
Methanopyrus kandleri	1
Methanosaeta concilii	1
Methanosaeta harundinacea	1
Methanosaeta thermophila	1
Methanosalsum zhilinae	1
Methanosarcina acetivorans	1
Methanosarcina barkeri	2
Methanosarcina mazei	1
Methanosarcina thermophila	1
Methanosphaera stadtmanae	1
Methanosphaerula palustris	1
Methanospirillum hungatei	1
Methanothermobacter marburgensis	1
Methanothermobacter thermautotrophicus	1
Methanothermococcus okinawensis	1
Methanothermus fervidus	1
Methanotorris formicicus	1
Methanotorris igneus	1
Natrialba asiatica	2
Natrialba magadii	3
Natrinema pellirubrum	1
Natrinema sp. J7-2	1
Natronobacterium gregoryi	1
Natronomonas pharaonis	1
Pyrobaculum aerophilum	2
Pyrobaculum arsenaticum	2
Pyrobaculum calidifontis	3
Pyrobaculum islandicum	3
Pyrobaculum oguniense	2
Pyrobaculum sp. 1860	3
Pyrococcus abyssi	4
Pyrococcus furiosus	4
Pyrococcus horikoshii	4
Pyrococcus sp.	1
Pyrococcus sp. NA2	4
Pyrococcus sp. ST04	4
Pyrococcus yayanosii	3
Pyrolobus fumarii	1
Staphylothermus hellenicus	1
Staphylothermus marinus	1
Thermococcus barophilus	3
Thermococcus gammatolerans	3
Thermococcus kodakarensis	3
Thermococcus litoralis	3
Thermococcus onnurineus	4
Thermococcus sibiricus	3
Thermococcus sp.	1
Thermococcus sp. 4557	2
Thermococcus sp. AM4	4
Thermococcus sp. CL1	3
Thermococcus zilligii	3
Thermofilum pendens	2
Thermogladius cellulolyticus	1
Thermoproteus neutrophilus	3
Thermoproteus tenax	2
Thermoproteus uzoniensis	2
Thermosphaera aggregans	1
uncultured archaeon	1
uncultured archaeon GZfos31B6	1
Vulcanisaeta distributa	2
Vulcanisaeta moutnovskia	2

Archaea with completed genomes lacking homologues
Acidianus hospitalis
Acidilobus saccharovorans
Cenarchaeum symbiosum
Ferroplasma acidarmanus
Ignicoccus hospitalis
Ignisphaera aggregans
Metallosphaera cuprina
Metallosphaera sedula
Methanocella paludicola
Nanoarchaeum equitans
Nitrosopumilus maritimus
Picrophilus torridus
Sulfolobus acidocaldarius
Sulfolobus islandicus
Sulfolobus solfataricus
Sulfolobus tokodaii
Thermoplasma acidophilum
Thermoplasma volcanium