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. Author manuscript; available in PMC: 2017 Jul 16.
Published in final edited form as: Int J Food Microbiol. 2016 Apr 14;229:52–59. doi: 10.1016/j.ijfoodmicro.2016.04.013

Table 3.

Comparison of predicted 266 amino acid sequences of SEC1, SEC2, SEC3,SECovine, SECbovine, and SECepi

Enterotoxin Strain Variable positions in predicted amino acid SEC sequences aa difference
2 4 5 7 9 15 20 21 22 34 37 41 43 47 49 53 58 66 81 86 99 102 121 133 154 160 192 218 243 245 249 total sp mp
SEC3 S. aureus
Mu3		 - - - I - - - S T - - - - - - - - - S K - K - G - V - N M N T 12 3 9
SEC2 S. aureus
Tokyo12381		 N S R I C - L - T T E - - - - - - M S K - K - G - - - N M N T 18 7 11
SEC1 S. aureus N S R I C - L - T T - A K - E V - - S K G K - G - - - N M N T 21 7 14
SECovine S. aureus
ED133		 N S R I C S L - T T E A K T E V R - S K - K C G - - S N M N T 26 8 18
SECbovine S. aureus
RF122		 N S R I C - L - T T E A K T E V R - S K - K - G K - - N M N T 24 7 17
SECepi S.
epidermidis
4S/FRI909		 Y R L V R A I F I M D S E L G Y H K N N D N Y S N I N S I K M - - -
Signal peptide

sp - signal peptide, mp - mature protein

Accession numbers (GenBank): SEC3 - S. aureus Mu3: AP009324.1 (complete genome), SEC2 - S. aureus Tokyo12381: AB860418.1 (SaPITokyo12381, complete sequence), SEC1: KF386012.1 (enterotoxin type C1 precursor gene), SECovine- S. aureus ED133: NC_017337.1 (complete genome), SECbovine- S. aureus RF122: NC_007622.1 (complete genome)