>1QB5_1|Chains A[auth D], B[auth E], C[auth F], D[auth G], E[auth H]|PROTEIN (HEAT LABILE ENTEROTOXIN TYPE IIB B-PENTAMER)|Escherichia coli (562) GASQFFKDNCNRTTASLVEGVELTKYISDINNNTDGMYVVSSTGGVWRISRAKDYPDNVMTAEMRKIAMAAVLSGMRVNMCASPASSPNVIWAIELEAE