>tr|A0A1X9T507|A0A1X9T507_VIBCE Cholera toxin B-subunit OS=Vibrio cholerae serotype O1 biovar El Tor GN=ctxB MIKLKFGVFFTVLLSSAYAHGTPQNITDLCAEYHNTQIYTLNDKIFSYTESLAGKREMAI ITFKNGAIFQVEVPGSQHIDSQKKAIERMKDTLRIAYLTEAKVEKLCVWNNKTPHAIAAI SMAN