>1CT1_1|Chains A[auth D], B[auth E], C[auth F], D[auth G], E[auth H]|CHOLERA TOXIN|Vibrio cholerae (666) TPQNITDLCAEYHNTQIHTLNDKIFSYTESLARKREMAIITFKNGATFQVEVPGSQHIDSQKKAIERMKDTLRIAYLTEAKVEKLCVWNNKTPHAIAAISMAN