>1RF2_1|Chains A[auth D], B[auth E], C[auth F], D[auth G], E[auth H]|cholera toxin B protein (CTB)|Vibrio cholerae (666)
TPQNITDLCAEYHNTQIHTLNDKIFSYTESLAGKREMAIITFKNGATFQVEVPGSQHIDSQKKAIERMKDTLRIAYLTEAKVEKLCVWNNKTPHAIAAISMAN