>5yy4_A|type: multi-domain chain
EVQLQQSGAELVRPGTSVKMSCKAAGYTFTKYWIGWVKQRPGHGLEWIGDIHPGSFYSNYNEKFKGKATLTADTSSSTAYMQLSSLTSEDSAIYYCARDYYTNYGDWGQGTSVTVSSAGGGGSGGGGSGGGGSGGGGSDIVMTQAAPSVSVTPGESVSISCRSSKSLLHRNGNTYLFWFLQRPGQSPQLLIYRMSNLASGVPDRFSGSGSGTAFTLRISRVEAEDVGVYYCMQHLEYPYTFGSGTKLELKVR
>5yy4_B|type: non-ab
DINYYTSEP
