Total number of CRAC/CARC motifs identified in the primary structure of RTX toxins [60]

RTX toxinBacteriumCRAC motifCARC motif
EhxAEnterohemorrhagic (EHEC)
Escherichia coli
1615
LktAMannheimia haemolytica1513
PILktAMannheimia varigena2116
PaxAPasteurella aerogenes1921
MmxAMorganella morganii1315
HlyAUPEC13*13
CyaABordetella pertussis2218
LtxAAggregatibacter actinomycetemcomitans2420
ApxIAActinobacillus pleuropneumoniae1816
ApxIIAA. pleuropneumoniae1616
ApxIIIAA. pleuropneumoniae2219
MbxAMoraxella bovis2518
RtxAKingella kingae1214

* The differences observed from results published by Vazquez et al. [52] are due to the flexibility impair to the sequence of the CRAC domain. CRAC: cholesterol recognition/interaction amino acid consensus; RTX: Repeat in ToXins; HlyA: alpha-hemolysin; UPEC: uropathogenic Escherichia coli; LtxA: leukotoxin. Adapted from [60]. © 2024 by the authors. CC BY