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Table 1 Exploring the presence of LuxS, Pfs, LuxP, LsrB, RbsB and SAH hydrolase in thermophililc archaea by using the protein sequences of LuxS, Pfs, and LsrB of E. coli str. K-12 substr. MG1655, LuxP of V. harveyi, RbsB of A. actinomycetemcomitans and SAH hydrolase of Ralstonia solanacearum as queries

From: Quorum sensing in thermophiles: prevalence of autoinducer-2 system

S.No.

Phylum

Archaea

Growth Temperature (°C)

A1–1 system

A1–2 system (% identity)

LuxS

LuxP

LsrB

RbsB

Pfs

SAH hydrolase

1.

Euryarchaeota

Thermococcus barophilus

(70- < 100)

–

–

–

–

–

–

40

Thermococcus celer

–

–

–

–

–

–

–

Thermococcus chitonophagus

–

–

–

–

–

–

41

Thermococcus gammatolerans

–

–

–

–

–

–

41

Thermococcus hydrothermalis

–

–

–

–

–

–

–

Thermococcus kodakarensis

–

–

–

–

–

–

41

Thermococcus litoralis

–

–

–

–

–

–

42

Thermococcus profundus

–

–

–

–

–

–

–

Thermococcus stetteri

–

–

–

–

–

–

–

Pyrococcus abyssi

100

–

–

–

–

–

–

41

Pyrococcus furiosus

–

–

–

–

–

–

42

Pyrococcus horikoshii

–

–

–

–

–

–

41

Pyrococcus woesei

–

–

–

–

–

–

–

Picrophilus oshimae

60

–

–

–

–

–

–

–

Picrophilus torridus

–

–

–

–

–

–

41

2.

Crenarchaeota

Sulfolobus shibatae

80

–

–

–

–

–

–

–

Pyrolobus fumarii

113

–

–

–

–

–

–

43

Pyrodictium abyssi

110

–

–

–

–

–

–

–

Metallosphaera sedula

75

–

–

–

–

–

–

41

Aeropyrum pernix

(70–100)

–

–

–

–

–

30

42

3.

Nanoarchaeota

Nanoarchaeum equitans

80

–

–

–

–

–

–

–

  1. a+: Present
  2. b-: < 25% identity not present