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Table 2 Bacteria and archaea with the highest proportion of encoded signaling proteins of each type

From: A census of membrane-bound and intracellular signal transduction proteins in bacteria: Bacterial IQ, extroverts and introverts

Organism Phylum No. proteins (%total)
Histidine kinases   
Nostoc sp. PCC 7120 Cyano 134 (2.2%)
Geobacter sulfurreducens Delta 92 (2.7%)
Bacteroides thetaiotaomicron Other 85 (1.8%)
Rhodopseudomonas palustris Alpha 66 (1.4%)
Desulfovibrio vulgaris Delta 64 (1.8%)
Wolinella succinogenes Epsilon 39 (1.9%)
Haloarcula marismortui Archaea 59 (1.4%)
MCPs   
Vibrio vulnificus Gamma 52 (1.2%)
Pseudomonas syringae Gamma 48 (0.9%)
Vibrio cholerae Gamma 45 (1.2%)
Chromobacterium violaceum Beta 42 (1.0%)
Clostridium acetobutylicum Firmicutes 38 (1.0%)
Wolinella succinogenes Epsilon 31 (1.5%)
Halobacterium salinarium Archaea 17 (0.6%)
Ser/Thr protein kinases   
Rhodopirellula baltica Other 60 (0.8%)
Nostoc sp. PCC 7120 Cyano 52 (0.9%)
Streptomyces coelicolor Actino 37 (0.4%)
Streptomyces avermitilis Actino 35 (0.4%)
Gloeobacter violaceus Cyano 20 (0.4%)
.Thermosynechococcus elongatus Cyano 17 (0.7%)
Sulfolobus tokodaii Archaea 12 (0.4%)
Diguanylate cyclases   
Vibrio vulnificus Gamma 66 (1.5%)
Shewanella oneidensis Gamma 52 (1.2%)
Vibrio parahaemolyticus Gamma 44 (0.9%)
Chromobacterium violaceum Beta 43 (1.0%)
Vibrio cholerae Gamma 41 (1.1%)
Idiomarina loihiensis Gamma 33 (1.3%)
Adenylate cyclases   
Bradyrhizobium japonicum Alpha 37 (0.4%)
Sinorhizobium meliloti Alpha 28 (0.5%)
Leptospira interrogans Spiro 18 (0.4%)
Mycobacterium bovis Actino 16 (0.4%)
Mycobacterium tuberculosis Actino 16 (0.4%)
Treponema denticola Spiro 9 (0.3%)
HD-GYP domains   
Desulfovibrio vulgaris Delta 14 (0.4%)
Vibrio vulnificus Gamma 13 (0.3%)
Chromobacterium violaceum Beta 11 (0.2%)
Thermotoga maritima Other 10 (0.5%)
Desulfotalea psychrophila Delta 10 (0.3%)
Geobacter sulfurreducens Delta 10 (0.3%)
  1. a – Beta, Gamma, Delta and Epsilon indicate the corresponding subdivisions of Proteobacteria; Cyano indicates cyanobacteria; Spiro indicates Spirochetes.