multocida subsp. gallicida strain Anand1 isolated from a chicken in India [47] but absent from strains Pm70, pathogenic bovine-source strain 36950 [48] and pathogenic swine source strains 3480 and HN06 [49]. Other studies have demonstrated an ability of avian-source P. multocida to ferment L-fucose, CHIR98014 research buy further suggesting that the majority of avian-source P. multocida strains harbor this system [9, 33, 50]. Other bacteria inhabiting the respiratory tracts of poultry have been identified to utilize L-fucose, such as Gallibacterium anatis, suggesting that such capabilities may be AZD2014 mouse advantageous

for respiratory bacterial pathogens of poultry [51]. Such systems could play a role in increased fitness and/or virulence capability of strains P1059 and X73 in the avian host. Figure 1 Venn diagram illustrating the shared and unique proteins of P. multocida strains Pm70, P1059, and X73.

Table 1 Predicted proteins of interest present in P. multocida strains P1059 and X73 at greater than 90% similarity but absent from strain Pm70         Presence in: Gene locus (P1059) Length (aa) Genomic island Predicted function Pm70 P1059 X73 36950 HN06 3480 00226 66 NA Hypothetical protein – + + – + + 00545 68 NA Hypothetical protein – + + – + + 00580 828 12 Trimethylamine-N-oxide reductase – + + + + + 00581 371 12 Cytochrome c-type protein TorY – + + + + + 00881 1125 15 Putative Ton-B dependent heme receptor – + + – - – 00948 62 NA Hypothetical protein – + + + + + 01347 332 26 Putative ARRY-438162 mw DNA-binding protein – + + + + + 01412 52 NA Hypothetical protein – + + + + + 01496 249 28 L-fucose operon activator – + + – - – 01497 586 28 L-fucose isomerase – + + – - – 01498 495 28 L-fuculokinase – + + – - – 01499 144 28 L-fucose

mutarotase – + + – - – 01500 215 28 L-fuculose phosphate aldolase – + + – - – 01501 508 28 Ribose ABC transport system, ATP-binding protein – + + – - – 01502 342 28 Ribose ABC transport system, permease protein – + + – - – 01503 318 28 Ribose ABC transporter, periplasmic ribose-binding protein – + + – - – 01505 480 28 Aldehyde dehydrogenase A – + + – - – 01550 384 31 Flavohemoprotein – + + + – + 01587 53 NA Hypothetical protein – + + + + + 01686 108 NA HigA antitoxin protein – + + – + – 01825 60 NA Hypothetical protein – + + + + + 01854 51 NA Hypothetical protein – + + – - + 01963 O-methylated flavonoid 52 NA Hypothetical protein – + + + + + Presence of these proteins in additional sequenced P. multocida is also presented. Figure 2 Circular map comparing sequenced avian source P. multocida strains. Scale is presented in kb. The outermost rings depict genomic regions not present in strain Pm70 but present in strains P1059 (light green), X73 (dark green), or both (yellow). Regions are numbered as described in the Tables. The next three rings depict the shared genomic regions of avian source strains Pm70 (outer ring), P1059 (middle ring), and X73 (inner ring).